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Kunkle Products

SAFETY AND RELIEF VALVES

BRONZE SAFETY VALVES FOR AIR, GAS AND STEAM SERVICE
Models 1 and 2. Compact assembly allows minimum space requirements. Precision lapped, metal-to-metal beveled seat provides premium shutoff. Adjustable blowdown for precise opening, with minimum preopen or simmer, and exact blowdown control Available in top or side outlet. Nickel plating for use on institutional equipment. (Variation 03) Vibration dampener on lift lever. (Variation 02)

Specifications:
Sizes: 1/2-, 3/4- and 1-inch (15, 18 and 25 mm)
Pressure/Temperature Limits - 250 psig (17.2 barg)/406°F (208°C)

Applications:

  • Air and non-hazardous gas service.
  • Air/Gas Compressors - prtable or stationary.
  • Pressure Vessels - including tanks, receivers, intercoolers, aftercoolers.
  • Steam turbines, kettles, other steam-processing equipment.

BRONZE RELIEF VALVES FOR LIQUID SERVICE
Models 19, 20 and 200. Extra heavy, rugged construction. Both inlet and outlet connections are cast integral with body to permit easy inspection and servicing without disconnecting piping. Seats lapped for optimum performance. Ball bearing pivot between disc and spring corrects misalignment and compensates for pring side thrust.

Specifications:
Sizes: 1/2- thru 3-inch (15 thru 80mm)
Pressure/Temperature Limits - 300 psig (20.7 barg)/407°:F (208°C)

Applications:

  • Overpressure relief and protection of pumps, tanks,lines and hydraulic systems.
  • Pressure regulation.
  • Continuous bypass relief.


BRASS SAFETY RELIEF VALVE FOR AIR AND GAS SERVICE
Model 30 Top-guided disc provides optimum performance.

Specifications:
Sizes: 1/4-inch (7mm)
Pressure/Temperature Limits - 4000 psig (27.6 barg)/300°F (150°C)

Applications:

  • Small to medium size, multi-stage, air compressors, intercoolers, aftercoolers, instrument/control air lines and systems.
  • Air tanks/receivers and pressurized equipment.

SENTINEL RELIEF VALVES FOR STEAM SERVICE
Models 40R and 40RL All parts are stainless steel with high-temperature ally steel spring for stability at super heated temperatures. Precision lapped beveled seats for optimum performance. Pivot between spring and disc corrects misalignment and compensates for spring side thrust.

Specifications:
Sizes: 1/2- and 3/4-inch (15 and 18 mm)
Pressure/Temperature Limits - 400 psig (27.6 barg)/850°F (455°C)

Applications:

  • Sentinel (warning) on steam equipment. Intended as audible warning device, not for pressure relief.
  • Steam turbines.


IRON, STEEL, STAINLESS STEEL RELIEF VALVES FOR LIQUID SERVICE
Models 71S and 171 Extra heavy, rugged construction. Seats lapped for optimum performance. Ball bearing pivot between disc and spring corrects misalignment and compensates for spring side thrust.

Specifications:
Sizes: 1/2- thru 2-inch (15 thru 50mm)
Pressure/Temperature Limits - 400 psig (27.6 barg)/400°F (208°C)

Applications:

  • Overpressure relief and protection of pumps, tanks, lines and hydraulic systems. Acid, caustic, ammonia and other corrosive liquids requirring iron, steel or stainless steel mterials.
  • Pressure regulation.
  • Bypass relief.
  • All 316 stainless steel Models 171S suitable for sanitary/edible applications.


IRON RELIEF VALVES FOR LIQUID SERVICE
Model 91 Extra heavy, rugged construction with bolted bonnet to permit easy inpsection and servicing without removal from system. Quality cast iron body and bonnet with bronze trim (instert and disc). Available with optional stainless steel insert and disc. Spring is steel with aluminum painting for corrosion protection. High lift, wing guided disc offers high relieveing capacity. Insert and disc lapped for optimum performance. Pivot between disc and spring corrects misalignment and compensates for side thrust.

Specifications:
Sizes: 1 1/2- thru 6-inch (40 thru 150 mm)
Pressure/Temperature Limits - 4000 psig (27.6 barg)/406°F (208°C)

Applications:

  • Overpressure relief and protection of pumps, tanks, lines and hydraulic systems.
  • Pressure regulation.
  • Suitable for installations where back pressures to 60 psig (4.14 barg) are present.

IRON RELIEF VALVES FOR LIQUID SERVICE
Models 218 adn 228 Extra heavy, rugged construction with bolted bonnet to permit easy inspection and servicing without removal from system. Quality cast iron body and bonnet with bronze trim (insert and disc). Available with optional stainless steel insert and disc. Spring is steel with aluminum painting for corrosion protection. High lift, wing guilded disc offers high relieving capacity. Insert and disc lapped for optimum performance. Pivot between disc and spring corrects misalignment and compensates for side thrust.

Specifications:
Sizes: 3-, 4- adn 6-inch (80, 100 and 150 mm)
Pressure/Temperature Limits - Adjustable 60/200 psig (4.1/13.8 barg)/ 406°F (208°C)

Applications:

  • Fire Pump Service, UL and FM approved.
  • 218 standard with handwheel for easy adjustment.


STAINLESS STEEL RELIEF VALVES FOR LIQUID OR VAPOR SERVICE
Model 140 Compact design requires minimum installation space. Angle lapped seat provides tight shut-off.

Specifications:
Sizes: 3/8- and 1/2-inch (10 and 15 mm)
Pressure/Temperature Limits - 300 psig (20.7 barg)/406°F (208°C)

Applications:

  • A general utility valve of all tainless steel construction, including spring, for liquid and non-code vapor installations.

SAFETY VALVES FOR AIR GAS, CRYOGENIC SERVICE
Models 189, 363 AND 389 Unique three-piece disc assembly (with Teflon® seat/seal) offers superior 'leak-free' performance over the entire pressure/temperature operating range. Control ring offers precise adjustment of blowdown. Heavy duty construction provides long service life. Pivot between disc and spring corrects for all misalignment and compensates for spring side thrust.

Specifications:
Sizes: 1/2- and 3/4-inch (15 and 18 mm)
Pressure/Temperature Limits - 2500 psig (172.4 barg)/-320°F (019°C), 350°F (177°C)

Applications:

  • Cryogenic 'cold' and liquefied air, oxygen and gas service.
  • Multi-stage and gas compressors, intercoolers and aftercoolers and receivers.
  • Thermal expansion relief and/or full rated capacity discharge.
  • Air, gas and liquefied gas lines and systems.


IRON VACUUM VALVES
Model 215V High capacity full nozzle design. Bronze nozzle, disc and guide with cast iron housing. Flat bronze valve seats are lapped for optimum performance. Warn ring offers easy adjustability for precise opening and minimum pre-open or simmer and exact blowdown control. Pivot between disc and spring corrects misalignment and compensates for spring side thrust.

Specifications:
Sizes: 2-, 2 1/2- and 3-inch (50, 65 and 80 mm)
Vacuum Limits - 22-inch HG (0.759 Kg cm2)/406°F (208°C)

Applications:

  • Bulk hauling trailers/equipment.
  • Light gauge tanks.
  • Protection of high volume vacuum pumps and conveying systems.

IRON SAFETY VALVES FOR AIR AND NON-HAZARDOUS GAS SERVICE
Model 337 High capacity full nozzle design. Bronze nozzle, disc and guide with cast iron housing. Flat bronze valve seats are lapped for optimum performance. Warn ring offers easy adjustability for precise opening and minimum pre-open or simmer and exact blow-down control. Pivot between disc and spring corrects misalignment and compensates for spring side thrust. Reversible lift lever for 'pull-up' or 'pull-down' manual testing.

Specifications:
Sizes: 2-, 2 1/2- and 3-inch (50, 65 and 80 mm)
Pressure/Temperature Limits - 60 psig (4.14 barg)/406°F (208°C)

Applications:

  • Protection of low-to-medium pressure, high volume blowers, compressors andpneumatic conveying systems.
  • Multi-stage and gas compressors, intercoolers and aftercoolers and receivers.
  • Bulk hauling trailers/equipment.
  • Light gauge trucks.


RELIEF VALVES FOR AIR/GAS SERVICE
Models 230, 330, 330S and 333S Lightweight aluminum construction, resistant to environmental and internal corrosion. Opening pressure is repetitively consistent, relief action is smooth, reseating is positive with minimum pressure drop. The full spring load is never imparted to synthetic disc insert. Seat tightness increases to a maximum as inlet pressure approaches the opening pressure.

Specifications:
Size: 1/4-inch (7 mm)
Pressure/Temperature Limits:
330 - 1000 psig (69 barg) minimum, 6500 psig (448.3 barg) maximum/185°F (85°C)
230 - 300 psig (20.7 barg) minimum, 1500 psig (104.4 barg) maximum/185°F (85°C)

Applications:

  • Multi-stage high pressure compressors, intercoolers and after-coolers.
  • High pressure receivers and storage bottles.
  • Thermal expansion relief.

STEEL, STAINLESS STEEL SAFETY/RELIEF VALVES FOR LIQUID, AIR, GAS, STEAM SERVICE
Models 264, 265, 266, and 267 Extra heavy rugged construction. Top guided design offers high capacity with 0.110 in2 (0.2794 cm2) orifice area. Seats lapped to optical flatness. Ball bearing pivot between disc and spring corrects misalignment and compensates for spring side thrust.

Specifications:
Sizes: 1/2-, 3/4- and 1-inch (15, 18, and 25 mm)
Pressure/Temperature Limits - 3300 psig (227.6 barg)/750°F (400°C)

Applications:

  • Protection of pumps, compressors, pressure vessels or systems handling corrosive liquids or bapors at high pressure and/or temperature.
  • Multi-stage and gas compressors, intercoolers and aftercoolers and receivers.
  • Bulk hauling trailers/equipment.
  • Sentinel (warning) on steam equipment.


STEEL SAFETY VALVES FOR STEAM, AIR, NON-HAZARDOUS GAS SERVICE
Models 300 and 600 Heavy duty construction of high quality steel with stainless steel full-nozzle trim. Bolted bonnet design for easy maintenance. Steel yoke incorporates a cover-shield for guilding surfaces and provides for fully exposed spring. Seats lapped to optical flatness. Dual conrol rings offer easy adjustability for precision opening with minimum pre-open or simmer and exact blowdown control. Heavy duty lift lever assembly.

Specifications:
Size: 1 1/4- thru 6-inch
Pressure/Temperature Limits: 1000 psig (69 barg)/750°F (400°C)

Applications:

  • Steam boilers and generators.
  • Pressure reducing stations.
  • Air/gas compressors - reciprocating or rotary.
  • Pressure Vessels - including tanks, receivers, intercoolers, oil-gas separators, lines.
  • Gags available.

SAFETY VALVES FOR HOT WATER HEATING BOILDERS
Model 537 Extra heavy construction provides long life. Top guided disc assembly incorporates resilient seal in seating area. Working parts are protected from corrosion b discharged liquid by an isolating diaphragm. Pivot between disc assembly and stem corrects for misalignment and compensates for spring side thrust. Heavy duty lift lever.

Specifications:
Sizes: 3/4- thru 2-inch (18 thru 50 mm)
Pressure/Temperature Limits - 160 psig (11 barg)/250°F (121°C)

Applications:

  • Hot water boiler and generators
  • ASME Code Section IV.


BRASS SAFETY VALVES FOR AIR, NON-HAZARDOUS GAS
Models 541, 542 and 548 Top guided disc - High capacity - Brass construction - Manual lift ring - Canadian registered.

541 - Brass body/seat with BUNA-N ball. Exceptional performance.

542 - Brass body/seat with Viton® ball.

548 - Stainless steel ball seal. (metal seats)

Specifications: 1/4- and 1/2-inch (7 and 15 mm)
Pressure/Temperature Limits: 400 psig (27.6 barg)/400°F (204°C)

Applications:

  • Small-to-medium size, single, and multi-stage, air compressors, intercoolers, aftercoolers, instrument/control air lines and systems.
  • Air tanks/receivers and pressurized equipment.

STAINLESS STEEL SAFETY VALVES FOR AIR AND GAS SERVICE
Models 803 and 818 Every valve is 100 percent tested/inspected for pressure setting and leakage. Factory sealed to prevent tampering or disassembly.

Specifications:
Sizes: 1/4- and 2-inch (7 and 50 mm)
Pressure/Temperature Limits:
803 - 6000 psig (413.8 barg)/185°F (85°C)
818 - 150 psig (10.3 barg)/300°F (150°C)

Applications:

  • Small-to-medium size, single, and multi-stage, air compressors, intercoolers, aftercooler, instrument/control air lines and systems.
  • Air tanks/receivers and pressurized equipment.


BRONZE, STEEL AND STAINLESS STEEL SAFETY RELIEF VALVES FOR AIR, GAS, STEAM, LIQUID AND VACUUM SERVICE
Models 910, 911, 912 and 913 Valve housing is heavy duty cast steel, stainless steel or bronze. Standard spring material is stainless steel suitable for temperatures to 550°F (288°C). High temperature alloy spring good to 800°F (427°C). Hex on valve nozzle provides for easy installation. Single control ring offers easy adjustability of blowdown. Pivoting disc design offers exceptional seat alignment. Seats tapped to optical flatness. Guide-to-nozzle ratio reduces friction. Models 920, 921 and 927 are certified for ASME Sction I - Special Requirements. Models 916, 917, 918 and 919 are limited by soft seat material.

Specifications:
Sizes: 1/2- thru 2-inch (15 thru 50 mm)
Pressure/Temperature Limits:
910 - 900 psig (62.1 barg)/800°F (427°C) steel/stainless steel trim
911 - 900 psig (62.1 barg)/800°F (427°C) all stainless steel
912 - 300 psig (17.2 barg)/406°F (208°C) bronze/brass trim
913 - 900 psig (20.7 barg)/425°F (219°C) bronze/SST trim

Applications:

  • Air/gas compressors.
  • Liquid Filled Pressure Vessels/Systems - ASME Sec. VIII (UV).
  • High Temperature/Pressure Hotwater Boilers - ASME Sec. I (V).
  • Pressure Vessels - containing gas, air or steam.
  • Process and industrial applications requiring steel/stainless steel construction.
  • Optional resilient soft seats available for superior leak free performance.

IRON SAFETY VALVES FOR STEAM HEATING BOILERS
Model 930 Extra high capacity for industrial, commercial and residential low pressure steam heating boilers. Cast iron with bronze nozzle, disc and guide. Large seat area/guide area ratio, along with disc pivot design insures top valve performance. Flat bronze valve seats are lapped for optimum performance. Reversible lift lever for 'pull-up' or 'pull-down' manual testing.

Specifications:
Sizes: 2-, 2 1/2- and 3-inch (50, 65 and 80 mm)
Pressure/Temperature Limits: 15 psig (1.03 barg)/250&@176;F (122°C)

Applications:

  • Low pressure steam heating boilers SME Code Section IV.


BRONZE SAFETY VALVES FOR AIR STEAM, NON-HAZARDOUS GAS
Series 6000 Valve housing is heavy duty casting. Wide hex on valve body provides clearance for easy installation. Seats lapped to optical flatness. Dual control rings offer easy adjustability for precise opening with minimum pre-open or simmer and exact blowdown control. Ball bearing pivot between disc and spring corrects misalignment and compensates for spring side thrust. Grooved piston type disc reduces siding area and friction. Heavy duty lift lever assembly. Models 6010, 6030, 6182 and 6130 provided with optional resilient O-ring seat for superior leak-free performance. Models 6021, 6121, 6221, and 6934 offer Teflon® (PFA) disc insert for exceptional leak-free performance (use on steam only). Models 6030, 6130, 6230, and 6935 supplied with stainless steel disc and nozzle for use on servere applications and/or set pressure up to 300 psig (20.7 barg).

Specifications:
Sizes: 1/2- thru 2 1/2-inch (15 thru 65 mm)
Pressure/Temperature Limits: 300 psig (20.7 barg)/425°F (219°C)

Applications:

  • Steam boilers and generators.
  • Air/gas comperssors - reciprocating or rotary - portable or stationary, intercoolers and aftercoolers.
  • Pressure Vessels - containing steam, air or non-hazardous gas including tanks, receivers, sterilizers and autoclaves.
  • Pressure Reducing Valves - protection of the discharge or low pressure side of system.
  • Models 6933, 6934 and 6935 are certified for ASME Section IV.

IRON SAFETY VALVES FOR AIR STEAM, NON-HAZARDOUS GAS SERVICE
Models 6252, 6253 and 6254 Heavy duty construction of quality cast iron with bronze or stainless steel semi-nozzle trim. Bolted bonnet design for easy maintenance. seats lapped to optical flatness. Dual control rings offer easy adjustability for precision opening with minimum pre-open or simmer and exact blowdown control. Heavy duty lift lever assembly.

Specifications:
Sizes: 1 1/2- thru 6-inch (40 thru 150 mm)
Pressure/Temperature Limits: 250 psig (17.2 barg)/406&@176;F (208°C)

Applications:

  • Steam boilers and generators.
  • Pressure reducing stations.
  • Air/gas compressors - reciprocating or rotary.
  • Pressure Vessels - including tanks, receivers, intercoolers, oil-gas separators, lines.


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