J B Valves

Diver Mateable
Subsea Applications.

Diver Mateable
Subsea Couplers.


The JB Valves diver mateable coupler is a tried and tested poppet style coupling used in subsea applications. Primary metal sealing with the addition of an nose seal to prevent ingress.  Endlessly configurable with connections available to suit the application.

Bespoke Requirements

We understand that legacy assets may have obsolete equipment installed. With our CMM facilities and experience we can assess products that may be beyond reasonable use and manufacture compatible equipment.

Our Diver Mate Couplers are Metal Primary Sealing for extended life expectancy

JB Valves Couplers do not rely on any elastomer or polymers for sealing either internally or externally. Reliable metal to metal seat sealing and welded body joints contribute to a robust tried and tested solution.

Protective Caps & Grounding Points

We understand that the harsh service conditions equipment can be exposed to may have an environmental impact. We have developed protective caps that can be grounded, but more importantly, can be used at full working pressure. Non pressure retaining Nylatron caps & plugs are also available.


Pressure Ranges API 3K, 5K & 10K,
15,000psi (1035 Bar) 15,000psi (1035 Bar)
Materials (pressure Containing) 316 Stainless
Size Range 1/4” & 1/2”
Temperature Ratings -40 °C to 235 °C
Connections JIC, SAE, NPT, BSP & Medium Pressure, Butt Weld, Tube Stubb (other connection types available upon request)
Maximum Working Depth 3000m
Mounting Direct/Through Mount Male as Standard 6-40mm Thicknes, 32mm cutout min.

Endurance Testing.

Endurance testing of our compatible equipment is always the highest priority. Both our Aeroquip and Duco compatible couplers utilise a tried and tested metal seated poppet for disconnect sealing. The endurance test has been developed to simulate multiple make & breaks with extended pressurised hold periods. No visible leakage was recorded at any point during the hold periods and after more than 200 full differential cycles.

Contact J B Valves

We can build powerful solutions, which are more advanced than ever. If you are interested working with our forward thinking & dynamic team call us on +44 1484 509 888.