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/)
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:
Technical Links to Manufacturer's Websites
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.
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