Kunkle Valve 0020-D01-MG0100 Valve

The Kunkle Valve 0020-D01-MG0100 is a heavy-duty ASME Section VIII pressure relief valve engineered for precision overpressure protection in liquid-based systems. Constructed with a rugged bronze body and brass trim, this 3/4 inch NPT relief valve is factory-set at 100 PSI with a flow capacity of 21 GPM, making it an ideal choice for pump bypass relief and thermal expansion protection. The 0020-D01-MG0100 features a pressure-tight cap and a 316 stainless steel spring, ensuring consistent set-pressure repeatability and superior corrosion resistance in demanding HVACR and industrial environments. Its beveled, lapped metal seats provide a bubble-tight seal, while the integral cast connections allow for streamlined inspection without the need to tear down the entire piping run. Whether used for air compressor intercoolers or protecting hydraulic lines, this Kunkle bronze liquid relief valve provides reliable mechanical fail-safe performance under rigorous duty cycles.

Key Benefits

• Industrial-Grade Construction: Built with a B62 bronze body and 316 stainless steel spring for long-term durability in high-cycle liquid and gas applications.
• Optimized Performance: Features lapped beveled seats and a spherical pivot design that corrects spring misalignment to ensure a positive shut-off.
• Streamlined Maintenance: The 3/4" MNPT inlet x 3/4" FNPT outlet connections are cast integral to the body, allowing for rapid servicing and inspection.
• Versatile Application: Suitable for a wide temperature range of -60°F to 406°F, fitting most pressure vessel protection and continuous bypass relief needs.

Common Questions

What is the maximum back pressure for the Kunkle Figure 20 series?
The Figure 20 series is designed to handle a maximum back pressure of 50 PSIG. Exceeding this limit can interfere with the set pressure and discharge capacity of the valve.

Can this valve be used for steam service?
While the Kunkle 20 series is primarily a non-code liquid relief valve, certain variations are rated for air/gas. For dedicated steam service, verify that the specific application meets the ASME Section VIII requirements for the MG0100 configuration.

Is the set pressure adjustable in the field?
Though this unit comes factory-set at 100 PSI, it features a pressure-tight cap that can be removed to access the adjust screw. However, any field adjustments should be performed by qualified personnel to ensure the set pressure remains within the spring’s designed range.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.