The pneumatic Y-pattern process valve: STEVI®AS

The pneumatic Y-pattern process valve: Up to 31% energy saving – Excellent value for money – Convenient handling – Reliable even at high differential pressures :

Powerful:
 

• Stays reliably tight for up to 1,000,000 cycles due to the superior, self-adjusting stem sealing system (spring loaded PTFE-V-ring unit with PTFE-graphite seal, burnished stem with double bearing)

• Reliable even at high differential pressures in the system due to the use of three different spring strengths as standard (up to DN 40 - 6, 10 and 16 bar / DN 50 - 4, 6 and 10 bar)!

• Water hammer reduced to a minimum due to the damped closing function (valve closes against the flow)

• Back-pressure-tight design (no need for a check valve)
 

Economical:
 

• Up to 31% energy saving due to the excellent flow values (flow-optimised Y-pattern body and large strokes)

• Increased durability due to the burnished stem
 

Convenient handling:
 

• Control line connected quickly and easily (ATG: no screw joint required for compressed air; ATG E: with screw joint for compressed air)

• Actuator can be turned 360°

• Spring loaded PTFE-V-ring unit

• Optical position indicator as standard
 

Reliable:
 

• No leakage can occur from the valve due to the superior, spring loaded PTFE-V-ring unit and the tight seal on closing due to the plug with PTFE soft sealing


Versatile:


• Bidirectional approach flow

• Spring to close, spring to open or double-acting actuator

• Actuator ambient temperature: -10°C to +60°C

• Optional: Comprehensive range of accessories, e.g. travel limiter, limit switch (inductive / mechanical), lever for emergency operation, 3/2-way solenoid valve or NAMUR adapter plate


Even greater versatility for...


Media:


Cooling water down to -10°C, warm water, hot water, air, oils, water vapour, neutral gases, bases, alcohols, contaminated media, nitrogen, glycol. etc. …