The Warner Lewis model WL5917 is an 18” hydrant pit box suitable for API/IP hydrant pit valves. It is designed to ensure no leakage of fuel into the ground, whilst allowing horizontal and vertical movement.
The spheroidal graphite cast iron outer housing, is internally epoxy coated in white 56C in accordance with MIL-C-4556D and externally coated in ‘Intertar’, intertuf coal tar epoxy black paint.
The inner housing is a welded steel construction with a welded in vertical riser pipe, coated internally in Copon epoxy paint. 6” ANSI 300lb riser flange, complete with studs, nuts and washers. A sealing bellows between the outer and inner box allows movement between the boxes, ±25mm in the horizontal and vertical plain. Internally epoxy coated in white 56C in accordance with MIL-C-4556D and externally coated in ‘Intertar’, intertuf coal tar epoxy black paint. There is no metallic contact between the outer and inner box.
The Warner Lewis model WL4231 hydrant high/low point assembly is designed for use for hydrant low pointdraining/sampling and high point venting. Normally fitted into an 18″ hydrant pit box with a 6″ ANSI 300lb riser flange.
Two 1 1/2″ 150lb fire safe ball valves are mounted to a 6″ 300lb ANSI base flange which is internally and externally epoxy coated in white 56C in accorance with MIL-C 4556E.
The assembly terminated in a 1 1/2″ self sealing adaptor for connection to the draining/venting apparatus.
A pressure relief valve ensures that the self sealing coupling does not become damaged due to thermal expansion, with manual bleed function..
Option automatic poppet pressure equalising adaptor.