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Torex Wam Valves
 
Wam DVA - Diverter Flap Valves
 
Description

The DVA Diverter Valve consists of a casing in stainless steel lined with SINT engineering polymer and a flap in SINT engineering polymer with a steel core. 

The flap is activated by a manual lever, or by a pneumatic or electric actuator. 

Function

DVA is a Diverter Valve with one inlet and two outlets for the diversion of the flow of powdery or granular materials. The engineering materials used enable quick cleaning and maintenance apart from offering great resistance to abrasion.
 
Performance & Technical Features - Benefits

Sturdy 304 stainless steel body completely lined with non-stick, wear-resistant SINT engineering polymer.
Stainless steel protection plates
Actuators: manual, pneumatic or gear motor
Casing with replaceable SINT engineering polymer liner
SINT engineering polymer for standard and food-grade applications
Contact between diverter flap and body liner in SINT ensures dustproof sealing
Elastic outline of the SINT flap guarantees material transport without particle breakdown, grinding or jamming
Easy access and minimum maintenance
Dust-tight
Minimum maintenance
Highly wear-resistant
Ex-stock delivery

Options & Accessories

FDA-approved food-grade version.
 
Torex Wam VDC - Double Dump Valves
 
Description

VDC Double Dump Valves consist of a robust casing and two alternately activated flaps, one installed on top of the other. The casing comes in carbon or stainless steel, whereas the flaps may be in carbon steel, stainless steel, Creusabro® or Hardox® anti-wear steel. The valve is activated either by gravity counterweights or by a gear motor with power transmission.

VDC Double Dump Valves are ideal for controlled discharging of powder or granular materials; they are mostly suitable for discharging dust from large de-dusting units and for heavy-duty applications in general, in virtually all industrial sectors. They are also used for systems that do not require continuous material flow. 
 
Function

VDC Double Dump Valves have been developed to withstand high temperatures, for abrasive materials and for those with irregular particle size in bulk solids processes in which constant material flow is important. While most suitable for continuous heavy-duty applications, VDC Valves can also be used for light-duty batch-type operation due to their great cost-effectiveness.
Explosive, toxic, flammable and harmful materials are hazardous.

Performance & Technical Features - Benefits

Easy access for maintenance
Smooth contact surfaces facilitate cleaning
High efficiency even with high temperatures
Excellent feeding properties

Options & Accessories

Contact parts manufactured in wear-resistant materials on request.
 
Wam VDI - Inclined Feeder Valves
 
Description

The VDI Inclined Slide Valve is innovative as a whole. Its inclined blade forms an eye-shaped aperture with the asymmetrically tapered inner body. The wider the eye is opened, the more material flows through, the further it is closed, the more the material flow is reduced.

The inner body consists of a self-supporting cast in SINT engineering polymer composite. The blade is manufactured from carbon or stainless steel. The Valve can be operated manually, electropneumatically or by gear motor. Intermediate blade positions instead of a complete opening are obtained through position sensors and made visible by an external indicator. To enforce material flow at low flow rates the dustproof VDI Valve can be equipped with an additional pneumatic hammer that imparts repetitive percussions to the internal valve body during operation.
 
Function

The VDI Inclined Slide Valve adds to the simple function of material flow by gravity interception the ability to control the material flow. The particular asymmetrical geometry of the blade enables flow adjustment adding, within certain limits, volumetric feeding properties to the unit. VDI Valves can be mounted on the outlets of hoppers, tanks, silos, screw conveyors wam, and loading bellows. Due to the different blade options they are used in virtually every industry, food-grade applications included.

Performance & Technical Features - Benefits

Body in carbon or stainless steel lined and coated with SINT polymer composite
Interchangeable blades in carbon steel, stainless steel or SINT engineering polymer
Interchangeable actuators: manual, pneumatic or gear motor
SINT engineering polymers for standard or food-grade applications
Intermediate blade positions for feeding
Dustproof design
Highly abrasion-resistant
Ex-stock delivery

Options & Accessories

CMG-type hand wheel actuator wam 
CRG-type gear motor actuator
FDA-approved food-grade version 
 
Wam VFF -Silo Shut-Off Butterfly Valves
 
Description

The VFF Silo Discharge Butterfly Valve is manufactured from a single-piece fabricated carbon steel body lined with WAM's polymer composite SINT. 

Due to the four corner slots the integrated upper square flange shown in the top left photograph can be adapted to different sizes of silo outlet flanges. The valve disc is manufactured from surface-treated carbon steel.
 
Function

VFF Discharge Butterfly Valves are used in all types of building material processing plants wherever interception of gravity-fed dry materials is required. They are fitted beneath hoppers, bins, or silos. Due to their special design and to the engineering materials used, they have been for many years a particularly economic and efficient solution.

Performance & Technical Features - Benefits

Carbon steel body
Carbon steel disc
SINT engineering polymer lining adaptable to valve disc
Small number of components

Excellent sealing properties due to special geometry of the seal
Abrasion-resistant
Easy to fit
Ex-stock delivery

Options & Accessories

Square top flange, round bottom flange
Identical round top and bottom flange
Twisting bottom flange 
 
Wam VFS - Butterfly Valves
 
Description

VFS Butterfly Valves consist of two high-pressure die-cast semi-bodies manufactured from aluminium alloy, a swivel disc in SINT polymer composite or cast iron, and a pre-stressed elastomer seal.

For the food industry a version with stainless steel disc and an FDA-approved integral seal is available.

While V1FS has a top flange and a beaded bottom section suitable for the attachment of a flexible sleeve, the V2FS comes with an identical top and bottom flange.
 
Function

For closing bins, hoppers and silos containing powders or granular materials, VFS Butterfly Valves are among the most widely used equipment worldwide.
What used to be custom-built items for specific applications, have been turned by WAM into a mass-produced industrial product with features that allow extremely versatile use.
VFS Butterfly Valves are used in all types of powder and granular material processing plants where interception of gravity-fed or pneumatically conveyed dry materials is required. They are fitted beneath hoppers, bins, silos, screw or other type conveyors, or to intercept pneumatic conveying ducts. Due to their special design and to the engineering materials used, they represent a particularly cost-effective yet most efficient solution.

Performance & Technical Features - Benefits

V1FS with top flange and beaded bottom section suitable for fixing of flexible sleeve
V2FS with identical top and bottom flange
Pressure-proof up to 0.2 bar (2.9 PSI)
High-pressure die-cast semi-bodies manufactured from aluminium alloy
Disc in cast iron, SINT engineering polymer, stainless steel
Seals for standard or food-grade application
Small number of components
Lightweight and easy to handle
Interchangeable discs
Highly abrasion-resistant
Easy to fit
Quick maintenance
Ex-stock delivery

Options & Accessories

ATEX zone 22 certification
Stainless steel disc and integral seal food grade version for food industry
 
Wam VG-VGR - Fabricated Slide Valves
 
Description

The VG-type Slide Gate Valve, which is entirely manufactured in carbon steel, ensures safe interception and excellent durability. 

The ideal equipment for heavy-duty applications, the VG Slide Gate Valve is available in larger sizes than the VL-type (see relevant page) and is equipped with two replaceable seals. In the VG version the Slide Gate Valves have a square cross section, in the VGR version a rectangular one.
 
Function

VG Slide Gate Valves are used in all those plant applications where interception of gravity material flow is required. The Valves are mounted on the outlets of hoppers, tanks, silos, mechanical conveyor, and on loading bellow inlets. VG Slide Gate Valves are suitable for virtually all industrial sectors including the food industry.

Performance & Technical Features - Benefits

Valve frame and blade in carbon or stainless steel
Small number of components
Powder-coated
Sizes up to 1,000mm (3.3 ft)
Quick maintenance and replacement of the scraper
Equipped for manual, electropneumatic or gear motor actuator

Options & Accessories

Food-grade version
 
Wam VL - SINT Slide Valves
 
Description

VL-type Slide Valves consist of a two piece carbon or stainless steel frame, which is partly coated with WAM's unique SINT engineering polymer composite, and a sliding blade manufactured either in the same material or in carbon or stainless steel. The use of SINT® engineering polymer composites considerably increases resistance to abrasion compared to traditional valves.

In the VLQ version the valves have square, in the VLC version a circular opening. The VLS version with square opening has pneumatic actuator integrated in the frame.
 
Function

VL Slides Valves are used where flow of a bulk solid caused by gravity or transport has to be intercepted. Valves may be fitted to hopper or silo outlets, to the inlets and outlets of mechanical conveyors and to the inlet of telescopic loading spouts. For the outlets of conveyors in particular, the VLS version with integrated pneumatic actuator is a valid option due to ist compact overall dimensions.
The special geometry of the VL Slide Gate Valves and the different options of blade design enable their application in virtually every sector including the food industry.

Performance & Technical Features - Benefits

Easy to handle
Highly abrasion-resistant
Easy to fit
Time-saving maintenance
Ex-stock delivery
Valve frames entirely coated with SINT polymer composite (food-grade FDA-approved on request)
Safe sealing with no additional measures due to the all-round dustproof seal lips incorporated in the polymer coating
The sliding blades, which in the standard version are fully coated with a special version of SINT polymer, guarantee low-friction operation. Depending on the application, blade options manufactured from various materials are available.
The small number of parts make dismantling and reassembly of the Valve an easy job.
In addition to the features of the other models, the VLS has the smallest possible overall dimensions thanks to the actuator assembly inside the valve frame.

Options & Accessories

Valve manufactured in carbon steel lined and coated with SINTMC
Valve in 304 stainless steel lined and coated with SINTAL (FDA-approved)
 
Wam VSS - Ball Segment Valves
 
Description

The VSS Ball Segment Valve consists of a carbon or stainless steel casing lined with SINT engineering polymer which acts as a seal. Due to the combination of the seal and the smooth finishing of the closing segment, which is also manufactured in SINT polymer, the valve is perfectly dustproof. 

The closing segment is adjustable in height to re-establish sealing properties after a certain period of operation.
 
Function

For intercepting material flow from bins, hoppers, silos, processing machinery, or pneumatic transport of materials with poor flowability, the use of an VSS Ball Segment Valve is often the most appropriate choice.
Unlike butterfly valves, Ball Segment Valves offer a free cross section in the open position. An unhindered material flow is the result. Viewed from the top, no other free flow valve offers any smaller overall dimensions.
VSS Ball Segment Valves are used virtually in all industrial sectors.

Performance & Technical Features - Benefits

Small overall dimensions.
Valve body in carbon or stainless steel with SINT engineering polymer lining
Closing segment in SINT engineering polymer
Suitable for standard or food-grade applications
Small number of components
Shaft seal adjustable
Possibility of re-establishing sealing properties even after long periods of operation
Opening torque adjustment according to choice of actuator type
Low-friction operation

Adaptable to every type of material and particle size
Can be used in all industries including food applications
Highly abrasion-resistant
Easy to fit and to maintain
Ex-stock delivery
 
Torex Wam RV - RVR - Drop-Through Rotary Valves
 
Description

RV Drop-Through Rotary Valves with square inlet and RVR with a circular inlet consist of a tubular cast iron or stainless steel casing, a horizontally mounted rotor with a certain number of V-shaped cross section compartments, a drive unit and a casing cover opposite the drive end.

Function

RV and RVR Rotary Valves have been developed for maximum versatility in application. They are suitable for controlled discharging and feeding of powdery or granular materials from silos, hoppers, pneumatic conveying systems, bag filter houses, or cyclones.
 
Performance & Technical Features - Benefits

Feed rates from 2.2 to 19.5 litres per revolution (0.08 to 0.7 cu ft per revolution)
Different drives for different rotation speeds
Maximum differential pressure: 0.3 bar (4.4 PSI)

Compatible with other WAMGROUP equipment thanks to WAM standard flanges
Various materials and treatments available according to product handled
Robust and compact design
Easy access to all internal mechanical components

Options & Accessories

Available in ATEX zone 22 version
Body in cast iron or 304/316 stainless steel (RV only)
Chrome-plated, nickel-plated, or Teflon surface-coated
Scrapers made from different materials to improve sealing properties and diminish abrasion
Compartment choking inserts for sticky materials or feed rate reduction
Greased or gas or air-purged shaft seals
Direct drive with fixed gear motor
Direct drive with variable speed drive
Coaxial drive with chain transmission
Bare shafted without drive unit
Rotor choke for granular materials (RV only)
Rotation indicator
Enforced motor cooling
Thermistors on motor winding
NEMA standard electric motors
 
Torex Wam RVC - Drop-Through Rotary Valves
 
Description

RVC Drop-Through Rotary Valves consist of a tubular cast iron or stainless steel casing, a horizontally mounted rotor with a certain number of oblique V-shaped cross section compartments, a drive unit and casing covers at both ends.

Function

Two compartments at a time of the continuously turning rotor are filled up with material through the inlet at the top of the Rotary Valve. After less than half a turn the material falls through the bottom opening through outlet with the same cross section opposite the inlet.
 
Performance & Technical Features - Benefits

Feed rate: 5 9 14 20 38 litres per revolution (0.17 0.3 0.5 0.7 1.3 cu ft per revolution)
Available in ATEX zone 22 version
Robust and compact design
Easy access to all internal mechanical parts

Options & Accessories

Fixed rotor speed: 10 / 20 / 30 r.p.m.
Variable rotor speed: 4 22 r.p.m.
Casing: cast iron or 304 / 316 stainless steel
Casing surface treatment: chrome or nickel-plated, Teflon® surface coated
Rotor: integral with bevelled blades, with scrapers (Viton®, Vulkolan, Teflon®)
Rotor surface treatment: nickel-plated, Teflon® surface-coated
Shaft seals: lubricated or air- / nitrogen-purged, high temperature-resistant
Drives: direct with gear motor, with variable speed gear motor, coaxial with chain transmission, bare shafted without drive
Fan-cooled electric motor
Thermistors on electric motor winding
Blade scrapers
 
Torex Wam RVS - Blow-Through Rotary Valves
 
Description

RVS Blow-Through Rotary Valves consist of a tubular cast iron or stainless steel casing, a horizontally mounted rotor with a certain number of oblique V-shaped cross section compartments, a drive unit and a casing cover at each end.

Function

Two compartments at a time of the continuously turning rotor are filled up with material through the inlet at the top of the Rotary Valve. After less than half a turn the material falls through the bottom opening into an air stream passing through a pneumatic conveying pipeline connected with the bottom part of the Rotary Valve.
 
Performance & Technical Features - Benefits

Feed rate: 5 9 14 20 38 litres per revolution (0.17 0.3 0.5 0.7 1.3 cu ft per revolution)
Available in ATEX zone 22 version
Robust and compact design
Rotor: integral with beveled blades, with scrapers (Viton, Vulkolan, Teflon)
Fixed rotor speed: 10 / 20 / 30 r.p.m.
Variable rotor speed: 4 22 r.p.m.
Rotor surface treatment: nickel plating, Teflon® coating, hardened blades
Casing: cast iron or 304 / 316 stainles steel
Casing surface treatment: nickel plating, Teflon® coating
Drives: direct with gear motor, with variable speed gear motor, coaxial with chain transmission, bare shafted without drive
Easy access to all internal mechanical parts

Options & Accessories

Shaft seals: lubricated, air- / nitrogen-purged, or high-temperature-resistant
Fan-cooled electric motor
Electric motor thermistors
Blade scrapers
 
Torex Wam VAD - Diverter Valves for Pneumatic Conveying
 
Description

VAD Diverter Valves consist of an aluminium die-cast casing and a swivel flap that closes one duct or the other. The range suits common pipe standards used for pneumatic conveying. Internal sealing of the body is achieved through low friction gaskets.

Surface treatment is available to make the valves suitable for operation with different materials.

Function

VAD-type Diverter Valves are suitable for use in pneumatic conveying lines for handling any type of product in powder or granular form.
Through activation of the actuator direction of the material flow is changed. VAD-type Diverter Valves guarantee minimum pressure loss and contamination-free, pressure-proof operation.
 
Performance & Technical Features - Benefits

Lightweight design
Compact overall dimensions
Operating temperature: - 20° C to 80° C (- 4 to 180° F)
Operating pressure: max. 2.5 bar (36 psi)

Options & Accessories

Pneumatic actuator
Electric swivel drive
Lever for manual actuator
 
Wam VCP - Spring-Loaded Pressure Relief Valves
 
Description

VCP Pressure Relief Valves consist of a cylindrical casing with a bottom flange to be connected with a spigot welded on the silo roof, a disc shape inner steel lid for negative pressure operation held in position by a central spring rod, an outside steel ring for excess pressure kept in position by three spring rods, gaskets, and a weather protection cover.
 
Function

In the VCP Pressure Relief Valve, helical springs keep the valve lids closed when the pressure value remains within the preset limits. The three outside spring rods keep the external ring-shaped lid firmly closed as long as the force generated by the pressure inside the silo does not overcome the spring force. Once the pressure exceeds the preset value the lid is pushed up and the pressure can escape. The smaller lid covers the central circular opening of the external lid from below. It is held in the middle by a single spring rod and is pressed onto the external lid by the normal air pressure inside the silo. In the event of suction pressure, the spring is compressed and allows the lid to drop. The air entering the silo from outside ensures rapid pressure balance and pushes the central lid back up into the "closed" position.

Performance & Technical Features - Benefits

Carbon steel body (VCP2731B) painted RAL 7001 or 304 stainless steel body (VCP2732B)
Weather protection cover in stainless steel
Body diameter: 273mm (10 in); 356mm (14 in)
Air volume up to 13,000m3/h (7,650 cfm)
Equipment for inductive signalling sensors
Both versions preset for maximum negative pressure of - 0.005 bar (- 0.07 psi) and maximum excess pressure of + 0.05 bar (0.72 psi).
Optionally valves can be set for maximum excess pressure ranging from + 0.03 bar (0.4 psi) to + 0.08 bar (1.16 psi), as well as for maximum negative pressure of - 0.001 bar (- 0.014 psi)
Weight: 9.5 kg (21 lbs) for Ø 273mm (10 in); 23 kg (51 lbs) for Ø 356mm (14 in)
Lightweight design and reduced overall dimensions make handling extremely comfortable
High resistance to atmospheric agents
Easy to fit
Quick maintenance

Options & Accessories

ATEX-certified version for zone 21
Inspection hatch
Inductive sensors
Bird net 
 
Wam VHS - Membrane Pressure Relief Valves
 
Description

VHS Pressure Relief Valves consist of a cylindrically shaped metal body with clamp connection spigot to the silo, an exhaust outlet spout for duct connection, an elastic diaphragm able to re-establish pressure balance instantaneously, a counterweight kit to keep the Valve closed under normal conditions, and a weather protection cover.
 
Function

For some time, tighter safety regulations in industrialized countries have ensured stricter enforcement of rules regarding the safeguarding of silos and bins against excess and negative pressure. There is no question that other countries will have to follow this example.

The counterweight-loaded VHS-type Pressure Relief Valve has one decisive advantage over the other type manufactured by WAM®, the VCP. Due to the moment of inertia of the helical springs on the VCP, pressure balance is re-established extremely quickly but not instantaneously.
The VHS, on the other hand, does the job in real time. Through an interplay of pressure on different surface areas on both sides of a diaphragm fitted inside the valve housing, perfect pressure balance is achieved. In the event of excess pressure this interaction enables air from inside the silo to flow back into the atmosphere; in case of suction pressure the air penetrates from the atmosphere into the silo.

Performance & Technical Features - Benefits

Casing in carbon steel (VHS2731B), painted RAL 7001 (silver-grey) or in 304 stainless steel (VHS2732B)
Body diameter = 273mm (10 in)
Air volume up to 5,000m3/h (2,950 cfm)
Exhaust outlet spout for connection with centralised suction system
These Valves are preset for a maximum negative pressure of - 0.005 bar (0.07 psi) and a maximum excess pressure of + 0.05 bar (0.72 psi).
Should customer requirements be different, the Valves can be set at a maximum excess pressure ranging from + 0.02 bar (0.29 psi) to + 0.08 bar (1.16 psi).
Weight: 22 kg (49 lbs)
Small overall dimensions
Short maintenance time
The working principle of the VHS Pressure Relief Valve itself is innovative. Its special double-acting diaphragm pervious to air sees to both excess and suction pressure relief.
The special properties of the diaphragm avoid blockage, as well as the formation of material crusts. 
 
Torex Wam VM - Pinch Valves
 
Description

The body of the VM Pinch Valve is manufactured in aluminium alloy. The sleeves are made from fabric-reinforced material. 

The sleeve support bushes are either made from aluminium alloy, hardened carbon steel, or 304/316 stainless steel.

Function

VM-type Pinch Valves are used for interception of the material flow in pneumatic conveying systems, or other pipelines. In addition, they can be installed as a locking device for silo filling pipes.
In the open position the internal cross section of the Valve is identical with the connecting pipe diameter. By introducing compressed air or, especially with small valves, water under pressure through the threaded bore into the interior of the Valve, the internal flexible sleeve is reshaped in such a way that the passage is hermetically sealed. VM Pinch Valves equally handle pneumatically conveyed powders, granules, fibres, dense mixtures and liquids.
 
Performance & Technical Features - Benefits

Compact overall dimensions
Easy and quick sleeve and bush replacement
Full bore-through passage without any pressure loss
No product contact with the body
Valve body in aluminium alloy
Sleeves in fabric-reinforced material
Sleeve support bushes either in aluminium alloy, hardened carbon steel, or 304/316 stainless steel
Maximum working pressure: 3.5 bar (52 psi)
Maximum inflation pressure: 6.0 bar (90 psi)
Recommended maximum differential pressure: 2.5 bar (37 psi)
Apart from periodic replacement of the sleeve and the bushes, no maintenance required
Lightweight in comparison with other makes and other types of valve
Particularly low air consumption

Options & Accessories

ATEX zone 22 version available
Different sleeve materials suitable for product handled
Different connection systems
Different bushes suitable for product handled
 
Torex Wam VAR - Drum-type Diverter Valves for Pneumatic Conveying
 
Description

The VAR Diverter Valve consists of a cast aluminium casing and cover, an inlet and two outlets. The rotating internal drum optionally closes one of two outlets which are connected with pneumatic conveying ducts.

The rotation of the internal drum is activated by means of a pneumatic actuator.

Perfect sealing is guaranteed by internal pneumatically inflatable seals.

Function

VAR Diverter Valves are suitable for conveying any type of powdery or granular material.
By means of the pneumatic actuator, which activates the rotating inner drum, the commutation of the tubular exit and, consequently, deviation of the material flow from one duct to another is obtained.
 
Performance & Technical Features - Benefits

Low weight and compact overall dimensions thanks to aluminium cast design
Operating temperature: -20 °C to 80 °C (-4 °F to 176 °F)
Operating pressure: max. 3.5 bar (51 PSI)
Closing pressure: max. 4.0 bar (58 PSI)
Activating pressure of pneumatic actuator: max. 8.0 bar (116 PSI)
Range includes most common pipe diameters in pneumatic conveying from 80mm to 200mm (3 in to 8 in)
Minimum pressure drop tank to special design features
Works in both directions as diverter or conveyor
Contamination-free
Maintenance-friendly

Options & Accessories

Surface treatments to adapt valve to different materials and environments
Contact parts coated in 304 stainless steel
Actuator position signalling box
Electro-pneumatic actuator in different voltages (24/48/110/230 V, AC)
 
Wamgroup
 


Wamgroup catalogues
 
Torex Wam Valves
 
Wam DVA - Diverter Flap Valves Torex Wam VDC - Double Dump Valves Wam VDI - Inclined Feeder Valves
Wam VFF -Silo Shut-Off Butterfly Valves Wam VFS - Butterfly Valves Wam VG-VGR - Fabricated Slide Valves
Wam VL - SINT Slide Valves Wam VSS - Ball Segment Valves Torex Wam RV - RVR - Drop-Through Rotary Valves
Torex Wam RVC - Drop-Through Rotary Valves Torex Wam RVS - Blow-Through Rotary Valves Torex Wam VAD - Diverter Valves for Pneumatic Conveying
Wam VCP - Spring-Loaded Pressure Relief Valves Wam VHS - Membrane Pressure Relief Valves Torex Wam VM - Pinch Valves
Torex Wam VAR - Drum-type Diverter Valves for Pneumatic Conveying Wam VCP - Spring-Loaded Pressure Relief Valves  

 

 
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