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Technical Specifications

All of our products meet Industry Standards and are manufactured by firms such as Dura Plastics, Lasco Fittings, HPC Inc, and Spears Mfg.

All of our products meet the ASTM Standard Specifications and Practices (astm.org):

ASTM D 2466 - Poly Vinyl Chloride (PVC) Plastic Pipe Fittings, Schedule 40.

ASTM D 2609 - Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe.

National Sanitation Foundation(NSF) - Standard 61 and/or 14 Plastic Fittings for potable water. (http://www.nsf.org/)

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

 

Technical Links to Manufacturer's Websites

Dura Plastics

Lasco Fittings

Spears Manufacturing

RECOMMENDATIONS FOR USE AND INSTALLATION (For Installers & Users)

Plastic piping systems should be ENGINEERED, INSTALLED, and OPERATED in accordance with ESTABLISHED DESIGN AND ENGINEERING STANDARDS AND PROCEDURES for plastic piping systems. Suitability for the intended service application should be determined by the installer and/or user prior to installation of a plastic piping system.

PRIOR TO ASSEMBLY, all piping system components should be inspected for damage or irregularities. Mating components should be checked to assure that tolerances and engagements are compatible.

SOLVENT WELD CONNECTIONS, Use a quality grade of primer and solvent cement formulated for the type of connection, with the CORRECT SIZE APPLICATOR. Read and follow all of the solvent cement MANUFACTURER'S APPLICATION AND CURE TIME INSTRUCTIONS THOROUGHLY.

NOT FOR USE WITH COMPRESSED AIR OR GASES WARNING

DO NOT USE COMPRESSED AIR OR GAS TO TEST THE PVC PIPING PRODUCT OR SYSTEM, AND DO NOT USE DEVICES PROPELLED BY COMPRESSED AIR OR GAS TO CLEAR SYSTEMS. THESE PRACTICES MAY RESULT IN EXPLOSIVE FRAGMENTATION OF SYSTEM PIPING AND COMPONENTS CAUSING SERIOUS OR FATAL BODILY INJURY.

WARRANTY POLICY

PVCFittingsDirect.com conveys to the buyer a limited and exclusive materials and workmanship warranty for items purchased only through this website. This warranty is equal to the same period of time provided by the manufacturer's warranty, EXCLUDING FORCE MAJEURE OR NORMAL WEAR AND TEAR OR ABUSE. THIS EXCLUSION INCLUDES, BUT IS NOT LIMITED TO, DAMAGE TO ANY PERSON, ANIMAL, OR STRUCTURE. EXCEPT FOR THIS EXPRESS WARRANTY, THE ITEMS PURCHASED ON THIS WEBSITE ARE WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. The sole remedy under this warranty is for a credit or replacement of the product.

Merchandise purchased from PVCFittingsDirect.com is covered by the warranty set forth by the manufacturer of the product. PVCFittingsDirect.com will cover only product purchases made through PVCFittingsDirect.com. All warranty issues on clearance items must go through the manufacture.

Please contact us for instructions if you wish to submit a warranty claim.

Limitation of Liability

NEITHER PVCFittingsDirect.com NOR OUR SUPPLIERS SHALL BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES INCURRED BY THE BUYER OR ANY THIRD PARTIES AS A RESULT OF ANY ALLEGED DEFECTS OF ANY PRODUCT OR SERVICE PROVIDED HERE UNDER, OR OTHERWISE ARISING FROM THE SALE OR USE OF ANY SUCH PRODUCT OR SERVICE.