This 1/4" valve is made with 316 stainless steel and PTFE seals and seats. They have a blow-out proof stem. Valves are 100% tested by air, underwater at 100 P.S.I. in open and closed positions. The have a latch locking handle that performs in both open and closed positions. They feature a mounting pad and a full port design. Valves are rated at 1,000 P.S.I.