I need a 42 inch swing check valve for raw sewage service. Due to piping limitations, I am looking for a short body (such as wafer style) swing check valve for sewage application. Full size check valve won't fit. Motorized Valve ActuatorsAny suggestions .Multi-functional Water Pump Control ValvesDoes it necessarily have to be swing check ?Standard swing check valves for this size in wafer comfiguration (or short bodies) will be difficult to source, of course, if you pay enough, you will find someone willing to make it for you (dont know about lead times though).Possible options are:Combined check valve (offset butterfly style, with counter-force).Dual disc check valve.Both would probably be available in short body, double flanged.Hope this can assist.BALL VALVESCiao,There is a third possibillity: to use a motorized knife-gate on/off valve if you are near a pumping station or an electrical outlet.This will need time to close and will not protect you by power failure. CHECK VALVESIf you are considering this you will have to check consequences of pressure peaks if you are pumping and the pumps closes down suddenly by power failure.You will also have to consider UPS if you need protection by power failure. Thanks for your tips. The double disc, butterfly style, or motorized knife gate may work, but they are not quite what I am looking for in terms of reliability. BUTTERFLY VALVESThe check valve should close almost instantly with the stoppage of flow to prevent reverse flow. I believe there are wafer style (short body) swing check valve manufacturers in the market, but I don't think they are proven in the raw sewage application. GATE VALVESI am still hoping that there might be a manufacturer who has a short body swing check valve that has been successfully used in the raw sewage service. One of the problems with swing-check 'dog type trap door construction' valves with wafer type building length is that they will be reduced bore and be limited in opening (bang agains pipeline 'roof'.Better is as mentioned before doble 'butterfly' check valves, or as mentioned perhap double eccentric single butterfly with counterwieight and perhaps dampening cylinder.This will be the nearest you can come a full opening with a short building length. I do not know of any other construction giving you what you want with a short building lkength.

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