Application: Hydraulic, water, oil Constructed with Carbon Steel body /, this flows control valves delivers precisely throttling while and wear Engineered for high pressure tubing systems, this Carbon Steel check valves features a robust 5800PSI rating and threaded connection to ensuring leakproof flows control Excellent fluid movement control Positioning structure: L with pressed nut, blanks without pressed nut, Manufacturer: YROHGKPN