Dixon Valve 4hf4 Iso-b Poppet Valve Female Coupler

Product Description

The DIXON VALVE 4hf4 is an H-Series ISO-B poppet valve female threaded coupler designed for industrial quick-connect hydraulic and fluid transfer applications. Built from 316 stainless steel, it delivers strong corrosion resistance in demanding environments including chemical, marine, and high-temperature service. The coupler accepts 1/2 inch-14 female NPTF threads and is rated for a maximum operating pressure of 3500 psi with a burst pressure of 22000 psi. Overall length is 2.86 inches, hex measures 1-1/16 inches, and maximum outside diameter is 1.86 inches. Licensed plumbers, pipefitters, and industrial maintenance technicians install this coupler in high-pressure fluid systems where fast, reliable disconnection is required.

This coupler is suited for industrial and commercial applications requiring ISO-B compliant quick-connect fittings. It performs across a wide temperature range of -40 degrees F to 250 degrees F, making it appropriate for both cold-environment and elevated-temperature process lines. Seal options available from Dixon include FKM, EPDM, Steam-EP, FDA FKM, Mil-Nitrile, Fuel Nitrile, PTFE, Silicone, and Kalrez grades 4079, 6375, and 7075. Valve configurations include unvalved, actuator, steel, brass, 303 stainless steel, and 316 stainless steel. Sleeve options include sleeve-lock, flanged, and silicone-flanged. Oxy-clean treatment is also available. Contact Dixon directly to specify option adders.

Key Features

• 316 stainless steel body for corrosion resistance in chemical and marine service
• Maximum operating pressure of 3500 psi with burst pressure rated at 22000 psi
• Wide temperature range: -40 degrees F to 250 degrees F
• ISO-B H-Series poppet valve design for standardized quick-connect compatibility
• 1/2 inch-14 female NPTF threads for secure, leak-resistant connection
• Multiple seal and valve configuration options available through Dixon

Compatibility

Designed as an OEM-style ISO-B H-Series quick-connect coupler for industrial hydraulic and fluid transfer systems requiring 1/2 inch female NPTF threaded connections.

Installation Notes

Installation should be performed by a qualified pipefitter, plumber, or industrial maintenance technician familiar with high-pressure fluid systems. Depressurize and isolate the system completely before disconnecting or installing any coupler. Verify thread type and seal material compatibility with the process fluid before assembly. Follow applicable codes including ASME B31.3 for process piping when applicable.

Technical Specifications

• Body Size: 1/2 inch
• Thread: Female NPTF 1/2 inch-14
• Material: 316 Stainless Steel
• Max Operating Pressure: 3500 psi
• Burst Pressure: 22000 psi
• Temperature Range: -40 degrees F to 250 degrees F
• Overall Length: 2.86 inches
• Hex Size: 1-1/16 inches
• Max Outside Diameter: 1.86 inches

Standard Information

• Brand: DIXON VALVE
• Manufacturer Part Number: 4hf4