Catalogue 7 - STAUFF Test

A www.stauff.com/7/en/#41 41 Catalogue 7 § Edition 06/2023 Test Couplings Test Coupling with Piston Valve SKK-12 A Internal Seals B Piston C Vibration Safety O-ring D Spring E Seal at Male Threaded Stud F Port Connection A A B C D E F Fast Coupling for Monitoring and control of pressure Venting Sampling in high- and low-pressure systems Filling of accumulators (special filling-version) Advantages Test system at working pressure Leakproof connection before piston valve is open Simple connection to measurement, control and switching devices Self locking metal protective cap Working Pressure Max. working pressure 630 bar/ 9137 PSI For SKK Type G and K the recommended working pressure of fitting manufacturer should be noted. Connection under pressure up to 400 bar / 5801 PSI max. DVGW DVGW registration as test points for gas pressure controlsystems, issued by the German Technical and Scientific Association for Gas and Water The DVGW approval relates solely to the SKK-12 and SKK-20 series with connection types: - M8x1-V-A-DVGW - M10x1-V-A-DVGW - 1/8NPT-V-D-DVGW - 1/4NPT-V-D-DVGW Materials Metal Parts: Standard material: Steel, zinc/nickel-plated = W3 Optional: Stainless Steel W4 (1.4305 / AISI 303) on request Stainless Steel W5 (1.4571 / AISI 316Ti) on request Seal Types: B = NBR (Buna-N®) (Temperature range -20 °C ... +100°C / -4 °F ... +212 °F) Note: Internal sealings made of FKM, even for standard NBR-type. V = FKM (Viton®) (Temperature range -20 °C ... +200 °C / -4 °F ... +392 °F) E = EPDM Ethylene Propylene Diene Monomer Rubber (for Brake fluid, Temperature range -40 °C ... +150 °C / -40 °F ... +302 °F) Vibration safety O-ring made of NBR (Buna-N®). Media Suitable for hydraulic oils and other Mineral oil based fluids (Check compatibility of seal material) For use with other liquid media please contact STAUFF In case of ultimate tightness requirements for gaseous media, a special Gas-type is available Protection Cap The complete STAUFF-Test-12-type-SKK range is also available with a plastic protection cap. SKK-12 Test Coupling with Male Threaded Stud SKK-12 Type G Test Coupling with Straight 24° Fitting SMK-12 Type K Test Coupling With 24° Taper / O-ring (DKO) SSKK-12 Bulkhead