Description
The PT Coupling STA-LOK® II D-Coupler Reducer is a coupler x female NPT thread reducer that connects a cam and groove adapter to a different size of threaded pipe. STA-LOK® II is PT Coupling’s passive locking feature: when the cam arms are fully closed they lock automatically, and quick-release levers open them. It helps prevent spills by keeping the arms from opening under vibration, pulsing, wear or when handling hazardous materials.
Key Features
- Cam arms lock automatically when fully closed; quick-release levers to open
- Meets the Coast Guard ASTM 1122-87 specification for quick disconnect couplers, per PT Coupling
- SLS cam arms are 316 stainless steel; SLB cam arms are brass
- Pins, rings and lock plate are 300 series stainless steel
- Made in the U.S.A. by PT Coupling
Specifications
- Connection: coupler x female NPT thread
- Sizes by material (ptcoupling.com): Aluminum (SLS) 2″ x 1-1/2″, 3″ x 2″, 4″ x 3″; 316 stainless steel (SLS) 1-1/2″ x 1″, 2″ x 1-1/2″, 2-1/2″ x 2″, 3″ x 2″, 4″ x 3″
- Gasket: Buna-N standard on couplers; other gasket compounds available. Contact Hockman-Lewis for details.
- Max. working pressure (PT Coupling, metal cam & groove, under 100°F): 250 PSI for 1/2″–2″, 200 PSI for 2-1/2″–3″, 150 PSI for 4″, 75 PSI for 5″–6″, 50 PSI for 8″–12″. Ratings are reduced at higher temperatures. Contact Hockman-Lewis to confirm the rating for your size and operating temperature.
- Lead time: Many sizes are made to order. Contact Hockman-Lewis to confirm availability and lead time
PT Coupling does not recommend cam and groove fittings for compressed gas service, including air and steam.
Select only from the material and size combinations listed. Contact Hockman-Lewis to confirm availability, cam arm material and the PT Coupling item number for your combination.
