Webstone h-14443wpr 3/4 Inch Pex Crimp Tankless Valve Kit

Product Description

The WEBSTONE h-14443wpr is a 3/4-inch PEX crimp isolator service valve kit engineered for tankless water heater installations requiring reliable shutoff and pressure relief. Built from lead-free brass, this kit incorporates the Isolator E-X-P E2 design, which uses a blowout-proof stem and an adjustable packing gland for long-term service integrity. A 150 PSI pressure relief valve is included, and the assembly is rated to 400 WOG. Threaded ends conform to ANSI B1.20.1, and PEX ends comply with ASTM F-1807. Licensed plumbers and HVAC technicians working on tankless domestic hot water systems are the primary installers.

This valve kit is suited for residential and commercial potable water applications where tankless water heaters require a dedicated service valve assembly. The FNPT union by PEX crimp connection type simplifies installation into existing or new PEX distribution systems without the need for soldering. The kit provides a complete, code-ready solution for isolating and servicing tankless units, making it a practical choice for new construction and retrofit projects alike.

Key Features

• Lead-free brass construction meets potable water requirements
• Blowout-proof stem design with adjustable packing gland for durable shutoff performance
• Includes 150 PSI pressure relief valve for integrated overpressure protection
• Rated to 400 WOG for reliable pressure handling in residential and light commercial systems
• FNPT union x PEX crimp connection eliminates the need for soldering during installation
• Threaded ends comply with ANSI B1.20.1 and PEX ends comply with ASTM F-1807

Compatibility

Designed as an OEM-style service valve kit for 3/4-inch PEX crimp tankless water heater installations in residential and commercial potable water systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before beginning any valve work. PEX crimp connections require a properly sized crimp ring and a calibrated crimp tool to ensure a watertight seal. Verify that all threaded connections are made up with appropriate thread sealant compatible with potable water service.

Technical Specifications

• Size: 3/4 inch
• Thread Size: 1 inch
• Connection Type: FNPT Union x PEX Crimp
• Max Operating Pressure: 400 WOG
• Pressure Relief Valve Rating: 150 psi
• Material: Brass
• Lead Free: Yes
• Thread Standard: ANSI B1.20.1
• PEX End Standard: ASTM F-1807

Standard Information

• Brand: WEBSTONE
• Manufacturer Part Number: h-14443wpr