Valve recommendations for effluent force main

[sdurspek]

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

 

[bimr]

You would be better off with a plug valve. Get a recommendation from Dezurik:

http://www.dezurik.com/getdoc/9708174a-4259-4dfc-9a16-ce45aa16865e/D12001C-pdf.aspx

 

[odools]

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.