Features:

Quick connation
Interchangeable completely between adapter and coupler
Pressure-proof hydraulic pressure test 300 PSI for up to 4" and 200 PSI for 5" and up

Materials:

Stainless steel (investment cast)1/2"-6"
Packing: BUNA-N(NBR) (or TEFLON, VITON on request)
Specifications:

Our couplings conform to MIL-AA-57326(MIL-C-27487) and are interchangeable with other products which meet this specification

Threads:

ANSI B 1.20.1(NPT)
DIN 2999/259
BSP
BS 21(PT)