Edson's Thru-Bolted (270PV-150/200) Hydrant is Lightweight and easy to use. With Minimal Fluid Spillage and reduced risk of exposure this Thru-Bolted Hydrant has a maximum operating pressure of 100 P.S.I. but cannot be uncoupled in open position. Having a unrestricted 1½" flow it can be used with a wide range of chemicals.