1.needle valve with high quality gurantee and lower price 2. ... 3.high tempreture and high pressure Features for needle valve: 1. Nominal pressure: 3000PSI,6000PSI,up to 10000psi2. Nominal diameter ... : 1/4",3/8",1/2",3/4",1"...3. Applicable medium: W.O.G.,and som corrosive medium.4 ...