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Valve recommendations for effluent force main

Valve recommendations for effluent force main

Valve recommendations for effluent force main

(OP)
We need a recommendation for shut-off valves that will hold up to the rigors (H2S) of a sanitary effluent force main. Does anyone have experience with anything that is still working?  We have epoxy coated butterfly and gate valves that become non-functional after a number of years due to H2S.  We have already realized that the butterfly valves were a big mistake.  Have heard some about eccentric plug valves with epoxy coating.

Steve

RE: Valve recommendations for effluent force main

We prefer the Dezurik plug valves in our system.


PLUG VALVES

1.    Type: Non-lubricated eccentric.
2.    Rating: 150-psi W.O.G.
3.    Ends: Flanged. Flanged valves are faced and drilled to ANSI/ASME B-16.42.
4.    Laying Length: Through 12 inch, flange face-to-face dimensions equal to standard gate valves.
5.    Body: Semi-steel with raised seats.
6.    Seats: 4-inches and larger valves welded-in overlay of high nickel content on all surfaces contacting the plug face. Seat end of valve shall be on the side closest to the pump(s).
7.    Plugs:
a.    Resilient faced plugs.
b.    Facings: Neoprene suitable for use with sewage, sludge or scum.
c.    Port areas for 20-inch valves: At least 80-percent of full pipe area.
8.    Bearings: Valves through 20-inches shall have permanently lubricated stainless steel bearings in the upper and lower plug stem journals.
9.    Bonnet: Bolted.
10.    Packing 4-inches and larger valves:
a.    Repacked without removing the bonnet.
b.    Adjustable.
11.    Zinc Plating: All exposed nuts, bolts, springs and washers.
12.    Plug valves 6-inches and larger shall be provided with gear operators attached to valve. Plug valves smaller than 6-inches shall be provided with factory supplied levers.
13.    Manufacturer: DeZurik.
 

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