Prier Products 526.42lf Boiler Drain 1/2 in Mpt X Sweat Lead Free

Product Description

The PRIER PRODUCTS 526.42lf is a lead free brass boiler drain valve designed for residential and light commercial hydronic and plumbing systems. It features a 1/2 inch MPT inlet and a 1/2 inch sweat (solder) inlet configuration, with a 3/4 inch garden hose connection outlet. The valve body is cast from lead free brass and is certified to NSF 372, meeting current lead free compliance standards for potable water contact. The solid brass fast-travel stem uses ACME threads for quick actuation. EPDM seals extend service life under repeated open and close cycles. Each valve is individually air tested before leaving the factory.

The 526.42lf is suited for draining boilers, water heaters, and hydronic heating loops in residential and small commercial installations. Its unobstructed waterway supports higher flow rates during drain-down procedures, reducing service time. The cast metal handle assembly with brass mounting screw provides a secure grip under typical operating conditions. Handle color options include green standard, red, and blue to support system identification by zone or fluid type.

Key Features

• Lead free brass body certified to NSF 372 for potable water compliance
• Solid brass fast-travel stem with ACME threads for rapid valve operation
• EPDM seals designed for extended wear life through repeated cycling
• 3/4 inch garden hose connection outlet for standard drain hose attachment
• Available inlet configurations: FPT, MPT, and SWT to fit varied piping setups
• Cast metal handle assembly with brass mounting screw and multiple handle color options
• Each valve individually air tested at the factory

Compatibility

Designed as an OEM-style replacement or new-installation boiler drain valve for residential and light commercial plumbing and hydronic heating systems requiring a 1/2 inch MPT or sweat inlet connection with a 3/4 inch hose outlet.

Installation Notes

Installation is typically performed by a licensed plumber. Shut off water supply and relieve system pressure before removing any existing drain valve. For the sweat connection, follow standard soldering practices per applicable plumbing codes and allow fittings to cool before pressurizing the system. Verify compliance with local plumbing codes and NSF 372 lead free requirements for any potable water application.

Technical Specifications

• Material: Lead free brass
• Certification: NSF 372
• Inlet Size (MPT): 1/2 inch
• Inlet Size (Sweat): 1/2 inch
• Outlet Connection: 3/4 inch garden hose thread
• Inlet Connection Types Available: FPT, MPT, SWT
• Stem Material: Solid brass
• Stem Thread Type: ACME
• Seal Material: EPDM
• Handle: Cast metal with brass mounting screw
• Handle Color Options: Green (standard), Red, Blue
• Testing: Individually air tested

Standard Information

• Brand: PRIER PRODUCTS
• Manufacturer Part Number: 526.42lf