North American Double Shut Off Valves
Sheet 1597-1
SPECIFICATIONS
Two normally closed safety shutoff valves in one housing. Valve 1 fast opening, fast closing. Valve 2 slow opening, fast closing. Main flow and initial lift adjustable.
Body Part Number
Flange Size ½ " - ¾ " NPT 1" - 2" NPT
Main Flow Setting: adjustable on V2: 10 to 100% of total flow
R947-3010 R947-3020
Initial Lift Adjustment: adjustable on V2: 0 to 70% of total flow
Gases : natural gas, propane, other noncorrosive gases and air
Materials in contact with Gas housing: Aluminium, Steel sealings on valve seats: NBR-based rubber
Maximum Operating Pressure : 7 psi
Ambient / Fluid Temperature : –40°F to +150°F
Mounting Position
solenoid upright vertical to solenoid horizontal
Electrical Ratings : 110-120 V ac / 50-60 Hz 220-240 V ac / 50-60 Hz 24 V dc
Strainer : 23 Mesh, installed in the housing upstream V1
Power Consumption : R947-3010: 45 VA R947-3020: 90 VA
Test Port : G 1/8 ISO 228 taps available on both sides upstream V1, between V1 and V2, downstream V2, and on both flanges 1 2 3
Electrical Connection : DIN-Connector
4
5
V1
V2
Operating Time : 100% duty cycle
2 3
1
Position Indication : Visual Indicator standard; Closed Position Indication Switch w/ visual indication and electrical switch (SPDT) optional Approvals : UL Recognized Component: File No. MH16727 (YIOZ2) FM Approved: Report J.I. 1Z6A0.AF AGA/CGA: pending
Classification Valve V1 : Safety Shutoff Valve: UL 429, FM 7400
Classification Valve V2 : Safety Shutoff Valve: UL 429, FM 7400
Closing Time : < 1 second
Opening Time : V1 < 1 sec.; V2 about 20 sec. (70 °F)
CAPACITY
Capacity in cfh at pressure drop of 1"w.c.; natural gas, sp. gr. = 0.64
2 "
1 ½ "
1 ¼ "
1 "
¾ "
½"
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390
325
R947-3010
1780
1700
1550
1260
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R947-3020
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