Automatic gas shutoff device Shutoff valve specifications
Item

Specification

Remark

KCV-2-20P

KCV-2-25T,P

KCV-2-32T,P

KCV-2-40T,PKCV-2-50T,P

KCV-2-80T,P

Caliber (Inlet/outlet)

20A

25A

32A

40A

50A

80A

Connection screw

Rc 3/4

Rc 1

Rc 1 1/4

Rc 1 1/2

Call 2

Call 3

Dimension

Modelheight

159mm

170mm

251mm

308mm

330mm

width

100mm

120mm

170mm

230mm

280mm

101mm

depth
1.5kg

WeightApplicable gas
Operating pressure range

121mm
1.7kg

3.7kg

straight type
50A,80A...JIS B2301
Equivalent toassembled flange

164mm
7.2kg

9.1kg

T: City gas P: LP gas
0~3.43kPa[0~350mmH➘O]

Operating temp.

－25℃~70℃

Pmax.

0.1MPa or higher [1kg/cm2 or higher]
External leakage No leakage / 34.3 kPa [3500 mmH➘O]

Airtightness

Internal leakage 0.25L/h or less 490Pa[50mmH➘O]
Below 0.25L/h 4.12Pa[420mmH➘O]

Valve

Explosion resistance No detonation by open/close operation in an atmosphere with hydrogen concentration of 19%~23%.
Electricaloperationmanualoperation

DC12V when closed, DC24V when open DC12V when closed, DC45V when open

By capacitor discharge

By operating the reset switch (blue) inside the transparent display cap.

Pull...valve open, push...valve closed
opening and shutting Answer-back type: Open/close signals are sent to the actuator by a reed switch.
indication
Valve closed: reed switch ON, valve open: reed switch OFF
Mounting posture
Connection cable

Other

Horizontal, vertical
T: VCTF 0.75mm➘,4 core, 1m (red: +, black: -, white: answer, green: pressure) ※1
P: VCTF 0.75mm➘, 5 cores, 1m (Red: +, Black: -, White: Answer, Green:Pressure, Yellow: G wire)
T：Inspection Rules for Automatic Gas Shutoff Devices for City Gas）passed
P：Inspection Rules for Gas Leak Alarm Shutoff Devices for Liquefied Petroleum Gas※1 When connecting to a centralized monitoring system using telephone lines, use G wire (yellow) only in this case and make a5-conductor connection, since FG wire may be used in some systems.
Normally, the G wire (yellow) should be left free since it is a 4-conductor connection, and the FG wire should be used inaccordance with the instructions of the gas supplier or the system manufacturer.

・Caution on pressure sensor setpoints
The pressure sensor built into the shutoff valve has three factory-set values for detecting a drop in gas pressure. The setvalues cannot be changed after shipment, so please be sure not to make a mistake in selecting the shutoff valve.
Classification

Gas type

Set value

Gas Type Category I

City gas

4A,5AN,5A,6A,4B,5B,6B,4C,5C,6C,7C

196~490Pa[20~50mmH➘O]

Gas Type II

City gas, natural gas

11A,12A,13A

686~980Pa[70~100mmH ➘O]

Gas Type III

LP GasLPG

1.37~1.62kPa[140~165mmH➘O]・When selecting a shutoff valve, refer to the "Shutoff Valve Flow Characteristics Graph" and fully consider the pressure
loss and other factors.

Note: Features
Shutoff valve flow characteristic 1 (Caliber: 20A to 40A Inlet pressure: 980 Pa)

Pressure loss (Pa)

Fluid: Air

Flow rate（㎥/h)Shutoff valve flow characteristic 2 (Caliber: 20A～40A Inlet pressure: 2.7kPa)

Pressure loss (Pa)

Fluid: Air

Flow rate（㎥/h)Shutoff valve flow characteristic 3 (Caliber: 50A～80A Inlet pressure: 980Pa)

Pressure loss (Pa)

Fluid: Air

Flow rate（㎥/h)Shutoff valve flow characteristic 4 (Caliber: 50A～80A Inlet pressure: 2.7kPa)

Pressure loss (Pa)

Fluid: Air

Flow rate（㎥/h)