kunkle safety valve model 6252 factory

Kunkle 6252 Seriesis constructed of heavy duty cast iron with stainless steel semi-nozzle trim and disc. Bolted bonnet design insures easy maintenance. Pressure Limit - 250 psig - 406°F. Available in various inlet sizes - 1-1/2" to 6".

Cast iron ASME section I steam and section VIII, air, steam and gas ‘UV’ National Board certified safety valves including model 6254 to ASME section IV ‘HV’, PED certified for non-hazardous gas.

ASME Section I Steam and ASME Section VIII, Air, Steam and Gas “UV” National Board Certified. Model 6254 ASME Section IV “HV,” National Board Certified. PED Certified for Non-Hazardous Gas.

Model 6254: Same as model 6252 except certified for ASME Code Section IV - Low pressure steam heating boilers. Set 15 psig [1.0 barg] only. J through P orifice only.

One of our most popular valves, Kunkle valve 6252 is steam, air and gas certified. Made of cast iron and stainless steel trim, this heavy duty valve is used on steam boilers, steam generators, and pressure reducing steam vessels such as tanks, receivers and oil/gas separators.

ASME Section I Steam and ASME Section VIII, Air, Steam and Gas “UV” National Board Certified. Model 6254 ASME Section IV “HV,” National Board Certified. PED Certified for Non-Hazardous Gas.

Model 6254: Same as Model 6252 except certified for ASME Code Section IV, Low-pressure Steam Heating Boilers. Set 15 PSIG [1.0 barg] only. J through P orifice only.

ASME Section I Steam and ASME Section VIII, Air, Steam and Gas “UV” National Board Certified. Model 6254 ASME Section IV “HV,” National Board Certified. PED Certified for Non-Hazardous Gas.

Model 6254: Same as model 6252 except certified for ASME Code Section IV – Low pressure steam heating boilers. Set 15 psig [1.0 barg] only. J through P orifice only.

ASME Section I Steam and ASME Section VIII, Air, Steam and Gas “UV” National Board Certified. Model 6254 ASME Section IV “HV,” National Board Certified. PED Certified for Non-Hazardous Gas.

Same as model 6252 except certified for ASME Code Section IV – Low pressure steam heating boilers. Set 15 psig [1.0 barg] only. J through P orifice only.

Kunkle Relief Valve OverviewWhen it comes to industrial and commercial safety and relief valve products, Kunkle’s valve’s catalog is second to none in steam, air, gas, and liquid applications.

Kunkle relief valves range in size from ¼” NPT to 6” flange and are suitable in cryogenic and high temperatures up to 800°F environments at vacuum to 7,500 psig pressure. Kunkle Valve’s code certifications meet several global and national board standards, including ASME Section I, Section IV, and Section VIII, PED, CRN, TU and Chinese, as well as non-code requirements.

Relief Valves for Steam ServiceSteam supplies heat for industrial and chemical processes and also is used to heat buildings, supply mechanical energy, and drive mechanical equipment. Steam moves from the boiler to the end point, then heats by direct heating or indirect heating through a heat exchanger. Kunkle steam relief valves are critical to protecting equipment such as boilers, steam lines, and pressure valves, from being over-pressurized.

Relief Valves for Air ServiceKunkle designs valves for air service, for example for air compressors in mechanical shops and small factories where either low-pressure or high-pressure air is required. NASVI stocks Kunkle relief valves for air service in iron, steel and bronze for a variety of uses.

Relief Valves for Liquid ServiceKunkle also makes valves for liquid service, which provide bypass relief in a variety of applications and liquid types.

More About KunkleKunkle Valve is a renowned pressure relief valve manufacturer. Erastus B. Kunkle invented the safety valve to prevent overpressure in locomotive engines. Kunkle patented it in 1875. Since that time, Kunkle has earned its reputation for high-quality valves, and other equipment manufacturers ship their products with Kunkle’s valves pre-installed.

NASVI has stocked Kunkle safety relief valves since we opened in 1975, so we are confident when we call ourselves Kunkle safety valve experts. Every day we fulfill orders for our customers looking for Kunkle relief valves for steam, air, gas, and liquid applications.

Installing your new Kunkle valve is a straightforward process, and it’s important to install it correctly perASMEBoiler and Pressure Vessel Code requirements to ensure proper operation. In this quick guide, we’ve outlined the basic steps for valve installation, plus a couple of tips for success. If you have any questions about installing your valve, give us a call at (314) 665-1741.

Before installing your Kunkle valve, double-check that the model number matches your order and that the valve’s set pressure, service media, and temperature limits are correct for your application. And remember to handle your new valve with care — some parts are fragile.

Try to use the shortest inlet piping possible with no elbows and a diameter equal to or greater than the valve inlet connection. Doing so will help make sure that the inlet pressure drop is < 3% when the valve relieves pressure.

Prevent damage to your valve when putting it into position by making sure your lifting straps don’t accidentally wrap around or otherwise interfere with the lift lever.

If you have a steam service,use a drip pan elbow or flexible connection between the valve and pipe. This helps to minimize stress from thermal expansion on the valve body.

Apply a sealing compound to the outside threads, taking care to avoid applying it to the first thread. Never apply sealing compound to internal threads. Otherwise, you risk damaging the inside of your valve and causing seat leakage. Then, tighten the valve to the connecting pipe enough to create a pressure-tight seal. Use only a wrench flat — do not apply pressure to the bonnet or valve body during tightening, and be careful not to over-tighten the valve.

Attach the valve to the connecting pipe using new gaskets — using new gaskets is always recommended for the best results. Tighten the mounting studs in an even fashion, using a star pattern, just like you would when installing the wheels on a car.