All of our products meet Industry Standards
All of our products meet the ASTM Standard Specifications and Practices
ASTM D 2466 - Poly Vinyl Chloride (PVC) Plastic Pipe Fittings, Schedule 40.
National Sanitation Foundation(NSF) - Standard 61 and/or 14 Plastic Fittings for potable water.
|
Definitions of Commonly Used Abbreviations |
|
|
Slip |
Slip on connection, must be glued |
|
Fipt |
Female Iron Pipe Threaded |
|
Mipt |
Male Iron Pipe Threaded |
|
Spig |
Spigot, has same dimensions as pipe of the same size |
|
Insert |
A Barbed fitting used with Polyethylene pipe and a clamp |
|
TBE |
Threaded Both Ends |
|
UVR |
Ultraviolet Resistant (for use in direct sunlight) |
|
Nipples |
A length of pipe that is threaded on both ends |
|
CPVC |
Chlorine added PVC for increased strength at higher temps. |
|
FHT |
Female House Thread |
What does Fipt, Mipt, Spig, and Slip mean and how do I know which one to use?
All PVC Fittings have connections that are called either Fipt (Female Threaded), Mipt (Male Threaded), Slip (Female Glue Joint), or Spig (Male Glue Joint). I will explain each one in detail below:
Fipt: This means the fitting is threaded on the inside (female) and will accept a threaded piece of pipe (male) of the same dimension.
Mipt: This means the fitting is threaded on the outside (male) just like the end of a piece of pipe. This connection must go to another fitting that is a Fipt (female) threaded. You cannot connect a Mipt Fitting to a piece of pipe without another fitting, since they are identical in configuration.
Slip: This is a smooth (not threaded) female fitting that will accept an unthreaded piece of pipe of the same size, which must be glued in.
Spig: This is a smooth (not threaded) male fitting that is made to go into another fitting that has a Slip connection of the same size, which must be glued in. A Spig fitting is the same as a piece of unthreaded pipe of the same size. You cannot connect a Spig Fitting to a piece of pipe without another fitting, since they are identical in configuration.
Schedule 40 Fittings Pressure Ratings
Schedule 40 fittings are rated on wall thickness. Due to this fact the pressure ratings for the size of fittings will vary. The pressure ratings are as follows:
|
Fitting Size |
Pressure Rating |
|
1/2" Schedule 40 Fittings |
600 psi |
|
3/4" Schedule 40 Fittings |
480 psi |
|
1" Schedule 40 Fittings |
450 psi |
|
1 1/4" Schedule 40 Fittings |
370 psi |
|
1 1/2" Schedule 40 Fittings |
330 psi |
|
2" Schedule 40 Fittings |
280 psi |
|
2 1/2" Schedule 40 Fittings |
300 psi |
|
3" Schedule 40 Fittings |
260 psi |
|
4" Schedule 40 Fittings |
220 psi |
|
6" Schedule 40 Fittings |
180 psi |
|
8" Schedule 40 Fittings |
160 psi |
|
10" Schedule 40 Fittings |
140 psi |
|
12" Schedule 40 Fittings |
130 psi |
