The Valv-Trol 3-Position 2-way Valve (Throttle Type) is basically our standard Balanced 2-Way Valve (Bulletin A-5) with a double diaphragm top assembly. The lower diaphragm, which is actuated by applying air to port “A” ,will stroke the valve completely. This operation is the same as a standard 2- way valve
Replaceable seats and discs are made of hardened stainless steel.
Proven to be very resistant to the effects of corrosion, wear, and wire drawing for longer service life.
The upper diaphragm is actuated by applying air to port “B”. This will stroke the valve anywhere from 10% to 90% of full stroke depending on the setting of the nuts on the adjusting stem
With this valve, you have a choice of full flow, restricted flow, or no flow. The selection depends on which diaphragm is actuated. This feature is often used to slow the ram on a hydraulic press just before the press closes completely or when it starts to opent before the press closes completely or when it starts to open.
The intermediate position is determined by the setting of the adjusting nuts on top of the valve
Can be field converted from Normally Open (NO) to Normally Closed (NC) or vice versa.
valv-trol BALANCED 2-WAY/2-POSITIONALVES FOR THROTTLING SERVICE Specifications: