Test Couplings with piston valve for:
? Hydraulic applications with low-viscosity fluids (e.g. water, cooling lubricants, etc.)
? For high, pulsating pressures
? For customer philosophy “Soft sealing / non metal to metal seal”
? Pneumatic applications
? Natural gas applications with DVGW requirement SKK-DVGW
? Other gas applications without DVGW requirements SKK-GAS
? Filling (flow in opposite direction) SKK-FÜLL
Area of Application
? Monitoring and control of pressure
? Venting
? Sampling in high- and low-pressure systems
? Filling of accumulators (special filling-version)
Advantages
? Coupling at system pressure level
? Leakproof connection before ball valve is open
? Simple connection to measuring, control
and switching devices
? Self locking metal guard cap
Media
? Suitable for hydraulic oils and other mineral oil
based fluids (Please pay attention to the sealing
materials used)
? For use in conjunction with other liquid or gaseous
media please consult STAUFF
? In case of ultimate tightness requirements for
gaseous media, a special Gas-type is available
Working Pressure
? Max. working pressure 630 bar / 9137 PSI
For SKK style G and K the recommended working
pressure of fitting manufacturer has to be applied.
? Joining under pressure up to 400 bar / 5801 PSI max.
Materials
Metal parts made of:
? Steel, zinc/nickel-plated = C6F (CrVI-free)
Optional:
? Stainless Steel V2A (1.4305 / AISI 303) on request
? Stainless Steel V4A (1.4571 / AISI 316Ti) on request
Sealings made of:
? P = NBR (Buna-N®)
Temperature range -20 °C ... +100 °C / -4 °F ... +212 °F
? V = FPM (Viton®)
Temperature range -20 °C ... +200 °C / -4 °F ... +392 °F
? E = EPDM (Ethylene Propylene Diene Rubber)
for brake fluid,
Temperature range -40 °C ... +150 °C / -40 °F ... +302 °F
Protection Cap
? The complete STAUFF Test-20-type-SKK range is also
available with a hexagonal protection cap made of steel
or plastic protection cap.
