Kunkle Safety and Relief Products
Tyco reserves the right to change product design and specifications KUKMC-0392
without notice. Copyright © 2002 by Tyco International Ltd. 8
Models 910, 911, 912, 913, 916, 917, 918, 919, 920, 921 and 927
Models 912, 913, 918, 919 ASME Section VIII, Steam/Air/Gas/ Liquid, ‘UV’ National Board Certified. Also available
for Vacuum Service
Service Recommendations for Resilient Seat/Seal Materials
Seat/Seal Materials
1
Service Recommendation
Air, Anhydrous Ammonia, Butane, Carbon Dioxide, Diesel Oil, Ethyl Chloride, Ethyl Ether, Freons #11
BUNA-N (-40° to 275°F) [-40° to 135°C] and 12, Fuel Oil, Gasoline, Helium, Hydrogen Sulphide, Kerosene, Lube Oil, Natural Gas, Nitrogen,
Oxygen (Gas), Propane, Propylene, Sulphur Dioxide, Vinyl Chloride
Acetone, Air, Amyl Alcohol, Aniline, Benzine, Butane, Carbon Disulphide, Carbon Tetrachloride
Dowtherm ‘A’ and ‘E’, Ethyl Chloride, Ethylene, Ethylene Glycol, Ethyl Alcohol, Gasoline, Hexane,
Viton
®
A (-10° to 406°F) [-23° to 208°C] Hydrogen Sulphide, Isobutyl Alcohol, JP - 4 Fuel, JP - 5 Fuel, Kerosene, Lube Oil, Natural Gas,
Naphtha, Nitrogen, Propane, Propylene, Propyl Alcohol, Sulphur Dioxide, Toluene, Trichloroethylene,
Turpentine, Water, Xylene
Silicone (-100° to 406°F) [-73° to 208°C] Air, Helium, Nitrogen, Oxygen (Gas)
Ethylene Propylene (-70° to 400°F) [-57° to 205°C] Steam, Hot Water
Neoprene (-45° to 300°F) [-43° to 149°C]
Air, Anhydrous Ammonia, Butane, Butyl Alcohol, Castor Oil Denatured Alcohol, Ethanol, Ethyl
Alcohol, Freons (12, 13, 14 and 22), Glycols, Natural Gas and Silicate Esters
Plain Lever
Threaded Cap
Packed Lever
Note
1. These recommendations are a guide only.
For the final selection of the proper material,
your experience with available elastomers of
various lading fluids should be considered.
Specifications
Model
2
Orifice Connections Maximum Set Pressure ––-–––––––– Dimensions, in [mm] –––-–––––––– Approx.
Number ANSI Standard psig [barg] A B C C C Weight
Inlet Outlet 912-918
4
913-919
5
Plain Threaded Packed lb [kg]
Lever Cap Lever
9*BDC D
1
/2” [12.7]
3
/4” [19.0] 300 [20.7] 900 [62.1] 2
3
/8 [60] 1
5
/8 [41] 8
3
/8 [213] 7
1
/4 [184] 9 [229] 3 [1.4]
9*BDC
7
D
1
/2” [12.7] 1” [25.4] 300 [20.7] 900 [62.1] 2
3
/8 [60] 1
5
/8 [41] 8
3
/8 [213] 7
1
/4 [184] 9 [229] 3 [1.4]
9*BDD
3
D
3
/4” [19.0]
3
/4” [19.0] — — 900 [62.1] 2
3
/8 [60] 1
5
/8 [41] 8
3
/8 [213] 7
1
/4 [184] 9 [229] 3 [1.4]
9*BDE
3
D 1” [25.4] 1” [25.4] — — 900 [62.1] 2
5
/8 [67] 1
5
/8 [41] 8
5
/8 [219] 7
1
/2 [191] 9
1
/8 [232] 3 [1.4]
9*BED E
3
/4” [19.0] 1
1
/4” [31.8] 300 [20.7] 900 [62.1] 2
5
/8 [67] 2 [51] 8
3
/4 [222] 7
5
/8 [194] 9
3
/8 [238] 4 [1.8]
9*BEF
3
E1
1
/4” [31.8] 1
1
/4” [31.8] — — 900 [62.1] 3 [76] 2 [51] 9
1
/8 [232] 8 [203] 9
3
/4 [248] 4 [1.8]
9*BFE F 1” [25.4] 1
1
/2” [38.1] 300 [20.7] 600 [41.4] 2
7
/8 [73] 2
3
/8 [60] 9
7
/8 [251] 8
3
/4 [222] 10
1
/2 [267] 6 [2.7]
9*BFG
3
F1
1
/2” [38.1] 1
1
/2” [38.1] — — 600 [41.4] 3 [76] 2
3
/8 [60] 10 [254] 8
7
/8 [225] 10
5
/8 [270] 6 [2.7]
9*BGF G 1
1
/4” [31.8] 2” [50.8] 300 [20.7] 600 [41.4] 3
1
/4 [89] 2
5
/8 [67] 11
1
/4 [286] 10
1
/8 [257] 11
3
/4 [298] 8 [3.6]
9*BGH
3
G 2” [50.8] 2” [50.8] — — 600 [41.4] 3
1
/4 [89] 2
5
/8 [67] 11
1
/4 [286] 10
1
/8 [257] 11
3
/4 [298] 8 [3.6]
9*BHG H 1
1
/2” [38.1] 2
1
/2” [63.5] 300 [20.7] 500 [34.5] 3
1
/2 [89] 2
3
/4 [70] 13 [330] 11
1
/8 [283] 12
1
/2 [318] 11 [5.0]
9*BJH J
6
2” [50.8] 3” [76.2] 300 [20.7] 500 [34.5] 4 [102] 3
1
/4 [89] 14
1
/2 [368] 12
1
/2 [318] 15
1
/8 [384] 15 [6.8]
Notes
1. Maximum temperature controlled by resilient
seat/seal material.
2. Replace asterisk with desired Model Number.
Data applicable to all models.
3. Available with SS trim only.
4. Maximum pressure on steam is 250 psig.
5. Maximum pressure on steam is 300 psig.
6. For C dimensions: pressures above 200 psig
[14 barg] add 1.25-inch [31.8 mm] to the
overall height.
7. Special variation required. Consult factory.
A
C
B
A
C
B
A
C
B
Models 912, 913, 918 and 919 ASME Section VIII, Air/Steam/Gas/Liquid,
‘UV’ National Board Certified. Also available for Vacuum Service
Model 912
Kunkle Safety and Relief Products
Tyco reserves the right to change product design and specifications KUKMC-0392
without notice. Copyright © 2002 by Tyco International Ltd. 7
Models 910, 911, 912, 913, 916, 917, 918, 919, 920, 921 and 927
Features
• Available with soft seat.
• Threaded cap is standard (back pressure
tight).
• Hex on valve nozzle provides for easy
installation.
• Single control ring offers easy
adjustability of blowdown.
• Pivoting disc design corrects
misalignment and offers exceptional
performance.
• Guide to nozzle ratio reduces friction.
• Full nozzle design for optimum flow
performance.
• Threaded side outlet for piped off
discharge to eliminate fugitive emissions.
Options
• Threaded cap. (Variation 01)
• Threaded cap with gag. (Variation 02)
• Plain lever. (Variation 03)
• Plain lever with gag. (Variation 04)
• Plain lever with vibration dampener.
(Variation 05)
• Packed lever. (Variation 06)
• Packed lever with gag. (Variation 07)
Model Descriptions
Model 912: Full nozzle design. SS warn ring
and disc with brass/bronze base. Bronze/
brass body and bonnet.
Model 913: Full nozzle design. Bronze/
brass body and bonnet. 316 SS trim (base,
disc and disc holder).
Model 918: Same as Model 912 except
resilient seat/seal. Superior ‘leak-free’
performance.
Model 919: Same as Model 913 except
resilient seat/seal. Superior ‘leak-free’
performance. Bronze body and bonnet.
316 SS trim (base, disc and disc holder).
Pressure and Temperature Limits
Models 912, 918: – Steam
3 to 250 psig [-0.2 to 17 barg]
1
-320° to 406°F [-195° to 208°C]
Models 913, 919: – Steam
3 to 300 psig [-0.2 to 17 barg]
1
-320° to 425°F [-195° to 219°C]
Models 912, 918: – Air/Gas/Liquid
3 to 300 psig [-0.2 to 21 barg]
-320° to 406°F [-195° to 208°C]
Models 913, 919: – Air/Gas/Liquid
3 to 900 psig [-0.2 to 62 barg]
-320° to 425°F [-195° to 219°C]
Vacuum – 6- through 29-inch HG
[200 through 1000 mbarg] – 300°F [149°C]
Maximum back pressure 50 psig [3 barg] -
threaded cap and packed lever
Note
1. ASME standard valves for air or steam
service must have lift lever. For steam boilers
and generators.
Applications
• Air/gas compressors - intercoolers -
aftercoolers.
• Liquid filled pressure vessels/systems -
ASME Section VIII (UV).
• Pressure vessels - containing gas, air,
liquid or steam. Including tanks and
receivers.
• Vacuum systems including pumps, tanks
and equipment.
• Optional materials for low temperature -
cryogenic applications.
• Oil/gas separators.
• Overpressure relief and protection
of pumps, tanks, lines and hydraulic
systems.
• By-pass relief or pressure regulation.
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