Many manufacturer s make dual mark pipe for both pressure and dwv applications.
Pvc dwv fittings pressure rating.
If they are dwv pattern fittings thats another story.
Specification for poly vinyl chloride pvc plastic pipe schedule 40 80 and 120 scope.
Swing joint general product cad drawings.
These de rating factors are assumed to be sustained elevated temperatures.
As the temperature of the pvc increases the pressure that the pvc can withstand will decrease.
The pipe may also have dwv written on it as long as the pipe has a pressure rating e g 300psi 73f you re okay.
If it doesn t have nsf pw or pressure rating chances are it s dwv.
Fittings at high temperatures.
Pvc schedule 40 pressure dwv pipe drain waste and vent.
10 foot or 20 foot overall lengths.
It is common for plumbers to use pvc 40 pipe for dwv applications.
Dwv parts look very similar to standard white schedule 40 pvc pipe and fittings.
Iron pipe size ips pvc cpvc pressure pipe and drainage waste vent dwv pipe forms one of the most widely used sizing classifications including schedule 40 80 120 pipe and class pipe in various standard dimension ratios sdr.
Asme b31 9 working pressure and temperature limits the working pressure and temperature limits of asme code b31 9 building services piping.
Pvc schedule 40 dwv pipe fittings.
Instead dwv pipe and fittings are made to handle a different class of uses drain waste and vent hence the name dwv.
The maximum recommended service temperature for pvc pressure pipe and fittings is 140 f 60 c.
Pressure ratings of plastics.
Pressure ratings pressure ratings of pipes and tubes and their fittings carbon steel stainless steel plastic copper and more.
The chart below will illustrate the pressure derating of pvc as temperatures increase.
You can also identify pressure rated or dwv fittings and pipe by their as number written on them but it s not essential to learn.
This specification covers pvc pipe in schedule 40 80 and 120 for pressure applications.
Swing swivel joint details for standard sprinklers.
This system is intended for pressure applications where the operating temperature will not exceed 140 degree fahrenheit.
Aluminum tubing allowable pressure allowable pressure for aluminum tubes.
Dwv adapter dwv bends elbows dwv bushing.
The only real difference is that dwv pvc is not made to handle pressurized uses like schedule 40 parts are.
De rating f c factor 73 23 1 00 80 27 0 88 90 32 0 75 100 37 0 62 110 43 0 50 120 49 0 40.
Swing joint details for valve in head sprinklers.
