Mixing Proof Valve with Seat Lift

Donjoy specializes in manufacturing and exporting valve,pump,fitting for over 20 years with good quality and pretty competitive price. Products are with 3A,CE,FDA cetification and production management is according to ISO9001-2008.SPECIFICATION
MaterialsParts in contact with the media: AISI 316L,Other stainless steel parts: AISI 304Internal surface finishRa≤0.8μmSurface finishRa≤0.4μmGasket (standard)EPDM in compliance with FDA 177.2600,NBR and FPM (Viton(R)ConnectionsDIN, SMS, RJT...Control box C-TOPelectric connection, AS-I bus connectionSizeDN40-1.1/2" to DN100-4"Two optional designsOne valve body(stop reversing),Three valve bodies(divert seat valve)Applications
The external supply mixing proof valve is designed to meet when there are two different product flows through the same only valve, both guarantee to prevent fluid mixing and convenient for monitoring the working condition.
Operating principles
Remotely control through compressed air this valve is normally closed(NC). This valve is companied with two small Pneumatic valves(Normally open). One for monitoring, Another one for CIP.
Plue(upper stem inside of a changever valve) has two seals. Which form a leakage chamber between each other. The leakage medium flow into the chamber, discharges through detector valve. Supply air to actuator can make the valve clean in place(see figure 2).
Under cleaning, fluid folw directly to the plug. This valve is unsensitive to water hammer effect.