General descriptionThe solenoid valves listed in this bulletin are of 3-way, pilot controlled, piston operated balancedconstruction, available with Brass / SS bodies.

ApplicationsThese Intrinsically Safe valves are designed and approved for use in hazardous zones 0,1 and 2and temperature class T6 and have a variety of applications such as :-chemical Plants, offshore oil and gas industries, pharmaceutical houses, research laboratories,handling volatiles, petrochemical refineries, distillation plants, ammonia plants, synthetic fuelgasifier plants, paint spraying industries, distillers of volatiles etc.

Solenoid OperatorThe Intrinsically safe solenoid operator confirms to IS 5780-1980, weather proof to IP65 andis certified by CMRI India. The operator is capable to operate at a very low energy level, availableas a 3/2 pull type solenoid with top exhaust and Manual reset type with push button. The 3/2operator is provided with an integral seat configuration (cartridge) and have a factory set corestroke. The enclosure has an epoxy moulded embedded screw terminals coil contains moulded-insolid state components for switch-off peak voltage suppression and independent polarityconnection.Standard - Carbon steel enclosure, zinc plated, blue colour epoxy coated with

1/2” NPT threaded conduit. Prefix WPTISOptional - Stainless steel enclosure, blue colour epoxy coated with

1/2” NPT threaded conduit. Prefix WSTISThe following are the operator identification number punched in the nameplate.IM12 - 3 INDT - 3/2 Solenoid with top exhaustIM12 - MR INDT - Manual reset solenoid operator

(I - Intrinsically safe, M12 - Type of coil, MR - operator function,INDT- Type of cable entry and identification of origin of approval)

ElectricalVoltage 24 V DC nominal Power consumption 0.3 watts nominalMinimum Current required 25mA. Coil resistance 406 ohms ±5% at 20°CMaximum coil resistance at 65°C ambient temperature and continuous duty service is 510 ohms.Voltage drop over the diode bridge is 1.4 volts (for calculation purposes a resistance of 50 ohms

for the diode bridge is acceptable)Maximum ambient and fluid temperature 65 °C

GeneralBody SS / Brass Core tube 305 SSCore and plugnut 430 F SS Seat Buna-NCoil Epoxy moulded (IP65) Springs 302 SS

InstallationAll valves must be used in combination with an approved Intrinsically Safe barrier or interfacingdevice. The solenoid operators must be mounted vertical and upright. Mounting brackets areavailable as an option, use Suffix “MB”

Ordering informationSpecify catalogue number, operating pressure, environmental conditions, ambient and fluidtemperatures and surface temperature classification. For standard NPT (H-28) threaded pipeconnection use reference letter “B” (see table). For BSP Pl. (BS 21) threaded pipe connectionuse reference letter “E”.

OperationUniversal construction for normally closed or normally openoperation. (standard construction )

Manual reset construction

Also suitable for selection of two pressures (pressureapplied at 2 and 3 and diversion of flow (pressure applied at 1).

SOLENOID VALVESIntrinsically safe valves for Hazardous

locations and hostile environments( standard and manual reset type )

BULLETINBULLETIN

307Ex ia IIC T6

ASCO (INDIA) LIMITED IS307-R0

Weatherproof with1/2” NPT conduitthread and carbonsteel enclosure.Intrinsically safeprefix

NPT thread(reference letter)

Example :- WPTIS B 307B5 MB

Mountingbracket(optional)

BasicNumber

ASCO (INDIA) LIMITED IS307-R0147, Karapakkam Village, Chennai 600096, 11/02Phone : 91-44-4504254, Fax : 91-44-4502270, E-mail : asco5@sanmargroup.com

SOLENOID VALVESIntrinsically safe solenoid valves

Series 307

m in m ax NPT1/4" 9 0.68 0.7 10 WPTIS B 307B5 SS 2.3 FV-115-294

1/4" 9 0.68 0.7 10 WPTIS B 307B15 BR 2.3 FV-115-294

3/8" 9 0.68 0.7 10 WPTIS B 307B35 SS 2.3 FV-115-294

3/8" 9 0.68 0.7 10 WPTIS B 307B45 BR 2.3 FV-115-294

1/2" 9 0.68 0.7 10 WPTIS B 307B65 SS 2.6 FV-115-294

1/2" 9 0.68 0.7 10 WPTIS B 307B75 BR 2.6 FV-115-294

1/4" 9 0.68 0.7 10 WPTIS B 307B6 SS 3.2 FV-143-417

1/4" 9 0.68 0.7 10 WPTIS B 307B16 BR 3.2 FV-143-417

3/8" 9 0.68 0.7 10 WPTIS B 307B36 SS 3.2 FV-143-417

3/8" 9 0.68 0.7 10 WPTIS B 307B46 BR 3.2 FV-143-417

1/2" 9 0.68 0.7 10 WPTIS B 307B66 SS 3.6 FV-143-417

1/2" 9 0.68 0.7 10 WPTIS B 307B76 BR 3.6 FV-143-417

Body m ater ial

Approx. w e ight

(kg)Spare k it no.

Threaded pipe

connection

Catalogue Number

Intrins ically safe prefix

Bas ic number

Pipe Size

(Inch)

Orifice Size

( m m )

Kv flow factor

(m 3/h)

Operating pressure differential ( ap)

bar(102kPa)

air/gas

UNIVERSAL OPERATION, SS / BRASS BODY

UNIVERSAL OPERATION, SS / BRASS BODY, MANUAL RESET CONSTRUCTION

Additional information

l Viton construction also available. For Viton construction add suffix “V”to catalogue number Example : WPTISB307B5V

l Mounting bracket - optional Part No. : 115-292-001 (SS)

l With the auxilliary port connected to the auxilliary air supply the valveposition is controlled independantly of the main line air and the valveoperates from 0 to 10 bar main line pressure. However, for applicationswhere an auxilliary air supply is not available the pilot operator may besupplied from the main line. The operating pressure range in this case is0.7 bar minimum to 10 bar maximum.

l For replacement coil consult ASCO.