"PVC SCH40 Pressure Fittings Type II"refers to a pressure-rated PVC (polyvinyl chloride) fitting designed for use with Schedule 40 PVC pipe that complies with specific dimensional and performance standards. These fittings are intended for industrial, plumbing, irrigation, water supply and similar systems where fluids are conveyed under pressure.
Materials and Standards
Material: Rigid PVC (unplasticized PVC), typically classified as ASTM D1784 Type I, Cell Classification 12454 (formerly PVC 1120) — this material is common for pressure applications due to strength and chemical resistance.
Dimensional Standard: Fittings conform to ASTM D2466 for Schedule 40 pressure fittings — this ensures dimensions and sockets match Schedule 40 pipe.
Certifications: Most pressure fittings carry third-party certifications such as NSF/ANSI 14 and NSF/ANSI 61 for potable water applications.
Temperature: Rated for up to ~60°C (140°F) service temperatures typical for PVC pressure systems.
Typical Types of SCH40 Pressure Fittings (Including “Type II” Range)
Standard Schedule 40 pressure fittings that may be offered in a Type II product line include:
▷ Elbows (45° and 90°) — change direction of run.
▷ Tees and Reducing Tees — create branches or transitions.
▷ Couplings / Reducers — connect same or different sizes.
▷ Adapters (Male/Female) — connect to threaded components.
▷ Caps/Plugs — seal open ends.
▷ Unions and Other Specialty Fittings — facilitate disassembly or unique function.
These fittings are all solvent weld socket-type fittings that match Schedule 40 pipe dimensions and are rated for pressure service.
Performance Characteristics
Pressure: Pressure capabilities vary by size and temperature — at 23°C (73°F), small SCH40 PVC systems commonly handle pressures in the range of ~150–280 psi, decreasing with increasing temperature.
Chemical Resistance: PVC offers broad resistance to acids, alkalis, and many industrial chemicals, which supports its use in diverse fluid systems.
Installation: Solvent welding (primer + solvent cement) creates a permanent, high-strength joint.
PVC SCH40 Pressure Fittings Type II are standard Schedule 40 pressure-rated PVC fittings produced to ASTM specifications for use with SCH40 pipe in pressurized fluid systems.
