1. Outer diamterial of inner flange thread part: 46.67mm .2. Diamter of retainerflange base: 57.4mm .Color: Black .Material: ABS .Package Contents: .2 x Over Pressure Release Valve .Only the above package content, other products are not included. .Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +- 1-3cm.
Item Over Pressure Valve (OPRV) for BCD, SMB, lift bag and other Buoys.Release air pressure: 2.3psi.The PU retainerflange is included, it needs machine to do welding.Thread specs: 1.846-20UN-2A
Delivery & returns: ships from Australian warehouses, usually within 5–12 business days. A few very remote postcodes can’t be reached by our couriers — if yours is one, we’ll contact you before dispatch. Faulty or damaged items are covered under the Australian Consumer Law.






