This system is intended for pressure applications where the operating temperature will not exceed 140 degree fahrenheit.
Pvc dwv fittings pressure rating.
The only real difference is that dwv pvc is not made to handle pressurized uses like schedule 40 parts are.
It is common for plumbers to use pvc 40 pipe for dwv applications.
10 foot or 20 foot overall lengths.
Many manufacturer s make dual mark pipe for both pressure and dwv applications.
If it doesn t have nsf pw or pressure rating chances are it s dwv.
Dwv parts look very similar to standard white schedule 40 pvc pipe and fittings.
Specification for poly vinyl chloride pvc plastic pipe schedule 40 80 and 120 scope.
These de rating factors are assumed to be sustained elevated temperatures.
Fittings at high temperatures.
Pvc schedule 40 pressure dwv pipe drain waste and vent.
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.
Instead dwv pipe and fittings are made to handle a different class of uses drain waste and vent hence the name dwv.
Swing swivel joint details for standard sprinklers.
Pvc schedule 40 dwv pipe fittings.
1 1 2 2 and 3 12 inch trade sizes.
Aluminum tubing allowable pressure allowable pressure for aluminum tubes.
Pressure ratings pressure ratings of pipes and tubes and their fittings carbon steel stainless steel plastic copper and more.
Pressure ratings of plastics.
As the temperature of the pvc increases the pressure that the pvc can withstand will decrease.
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.
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.
Swing joint details for valve in head sprinklers.
The maximum recommended service temperature for pvc pressure pipe and fittings is 140 f 60 c.
This specification covers pvc pipe in schedule 40 80 and 120 for pressure applications.
Asme b31 9 working pressure and temperature limits the working pressure and temperature limits of asme code b31 9 building services piping.
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.
The chart below will illustrate the pressure derating of pvc as temperatures increase.
If they are dwv pattern fittings thats another story.
Swing joint general product cad drawings.
