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These versatile valves are designed for a wide range of gravity flow applications. All share the same one-piece cast housings and heavy duty components that ensure reliable low maintenance operation for many years. Slides are sealed internally by a replaceable polyurethane or steel wiper ring. The end of the slide plate is sealed with an adjustable packing gland. Between the two seals is a wiper blade that ensures long seal life. Both the inlet and outlet flanges are drilled and tapped with identical patterns to simplify installation. A range of actuators is available to accommodate most applications.
SB-Twin Piston
- Sizes 6" through 16"
- A very compact design
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Integral-passage slide valves are suitable for all those uses where perfect tightness has to be assured both to material (VLPM/ VLPC/VLPP) and pressure (VLRM/VLRC/VLRP) even in the presence of high temperature and with abrasive products.
They are used for powders and granules under silos, hoppers, batchers and screw conveyors.
Anyhow our technical service is at your complete disposal to meet any requirement.
- Valves are suitable for tightening between counterflanges UNI-PN 10 or ANSI 150 lb.
- Interior tightness is assured by a toroidal gasket acting on the blade in closed position ((VLRM/VLRC/VLRP).
- Tightness towards the outside is assured by an adjustable packing gland system.
- The manual valve control is achieved by a handwheel (VLPM/VLRM) and by a pulley with chain (VLPC/VLRC)
- The electropneumatic valve control is achieved by a double-effect cylinder activated by 1/4" Gas 5/2 single solenoid valve.
- Two proximity inductive limit-switches ø 18 are used to remote-indicate the blade position.
- Electropneumatic slide valves in special execution may be supplied with 3 positions for course / fine batching on balances.
- Electropneumatic slide valves are designed and manufactured in compliance with Community Regulations 89/392/EEC.
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Shut-off valves for bulk materials must close trouble-free in
the flowing bulk material and in the product column. The
slide gate should not jam or block, and the bulk material
should not be squeezed. Slide gates from Coperion Waeschle
fulfil exactly these requirements.
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Pipe regulators, pneumatically operated including cylinder, 5/2-way-solenoid-valve (1 coil) with auxiliary hand operation and 2 proximity-switches, potential-free
ATEX version according to category 2 or 3 with admissible Zone 20 in the slide plate on request.
Application:
Shutting off of bulk goods without over-pressure inside of the pipe system.
Slide plate closes when electric supply is cut.
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Used in control loops with neutral and aggressive media in chemical and process industries. Exact control of the valve opening is assured by positioners (pneumatic or electropneumatic). As a standard the valve is equipped with an integrated top-mounted positioner.
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Emergency Shut Off Gate Valves
Size range : DN40 - DN100 1 1/2" - 4"
Pressure rating : Up to 40 BAR 150 psi max actuator inlet pressure
End connections : Socket weld / butt weld
Configurations : Full bore, removable body seat to eliminate risk of damage during installation
Materials : Austenitic stainless steel
Stainless steel cryogenic emergency shut off gate valve with bolted bonnet and integral pneumatic actuator. Fail safe and automatic operation. The valve is held open by pneumatic air pressure and closes automatically on air vent or the loss of the pneumatic air supply pressure, for whatever reason.
The bellows type pneumatic actuator includes a single convoluted air spring actuator of rubber connections with manual override.
The valve has a wedge seat design for tight shut off to seal on the downstream seat only in order to prevent liquid lock. The bolted bonnet allows for simple site maintenance, with easy access to the serviceable parts of the valve.
All valves are degreased for oxygen duty, assembled in clean room conditions and pressure tested prior to despatch.
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