Ruisongbuild ASTM PVC Union Schedule 40 & 80 Slip x Slip Threaded

Description

Ruisongbuild ASTM PVC Unions: Engineered for Serviceability and Strength

A Union is the essential fitting for any piping system that requires periodic maintenance. At Ruisongbuild, our ASTM standard PVC unions are designed to provide a high-pressure, leak-proof connection that can be easily unscrewed by hand. Whether you are installing a residential pool pump or an industrial chemical dosing line, our imperial unions ensure your infrastructure remains modular, accessible, and built for the long haul.

Technical Specifications & North American Standards

• Material: Premium Unplasticized PVC (UPVC).

• Standards: ASTM D2466 (Schedule 40) / ASTM D2467 (Schedule 80).

• Dimensions: IPS (Iron Pipe Size) system, measured in Inches.

• Seal Material: High-grade EPDM O-ring included (Excellent chemical resistance).

• Configurations: Slip x Slip, Threaded (FPT), or Slip x Threaded combinations.

• Size Range: 1/2″ up to 6″.

• Color: White (Sch 40) & Industrial Gray (Sch 80).

Why Ruisongbuild ASTM Unions are the Professional’s Choice?

• Easy Equipment Maintenance: Allows for the rapid removal of pumps, heaters, and filters for repair or winterization without cutting into the plumbing line.

• 100% Leak-Proof Reliability: The precision-seated EPDM O-ring ensures a watertight seal even under high pressure and minor pipe vibration.

• High-Torque Threaded Nut: Our heavy-wall union nut features deep, reinforced threads, allowing for easy hand-tightening or the use of a strap wrench without the risk of cracking.

• Superior Material Purity: 100% lead-free and non-toxic, safe for potable water distribution and sensitive aquaculture systems.

Primary Applications

• Swimming Pools & Spas: Connecting filtration pumps, chlorinators, and heaters.

• Residential Plumbing: Whole-house water filters and water softener connections.

• Industrial Process Piping: Modular skids and chemical transport lines requiring frequent cleaning.

• Aquariums & Aquaculture: Detachable nodes for complex aquatic filtration systems.

Frequently Asked Questions

Q1: What is the difference between a PVC Union and a PVC Coupling?
A: A coupling creates a permanent, fixed joint by solvent welding. A union provides a detachable connection. It allows you to unscrew the center nut and separate the pipe sections for maintenance without having to cut the pipe.

Q2: Can I use a Schedule 40 Union on a Schedule 80 pipe?
A: While the outside diameters are compatible, a Schedule 40 Union has thinner walls and a lower pressure rating than Schedule 80 pipe. For industrial or high-pressure systems, we strongly recommend matching the Schedule of the pipe with the fitting (use Sch 80 unions for Sch 80 pipes).

Q3: Are these unions compatible with Metric (DIN) pipes?
A: No. Ruisongbuild ASTM unions are measured in imperial inches (IPS) and are only compatible with ASTM standard pipes. They will not fit Metric (DIN) pipes measured in millimeters.

Q4: Should I use Teflon tape on the union nut threads?
A: No. You should not use Teflon (PTFE) tape on the large union nut threads. The seal is created by the O-ring compressed inside. Adding tape to the threads can prevent the nut from tightening fully and may actually cause a leak.

Q5: Is the O-ring replaceable?
A: Yes. Ruisongbuild unions use standard-size EPDM O-rings that can be replaced if they become worn or damaged over many years of service.

Contact the Ruisong engineering team today for factory-direct pricing and technical support!