» ASCO™ · Supplied by ACD America
ASCO™ Solenoid Valves
From the general-service workhorses that switch water, air and fuel gas to the balanced-poppet pilots that trip a control valve — the ASCO™ solenoid line covers the on/off and pilot duty across the plant.
Sizing a valve? Estimate flow, pressure drop or Cv/Kv with our free calculator.
Open the Flow Calculator →A solenoid valve does one job and has to do it every time: energize the coil, move the plunger, open or close the port. The failure modes are mundane and expensive — a coil that burns on the wrong voltage, a seal that swells on the wrong fluid, a valve that will not shift because the line has no differential pressure. Picking the series is picking against those failures.
The line splits along three decisions. Direct acting or pilot operated: direct-acting constructions like the 320 and 327 work at zero differential, so they shift on a dead line; pilot-operated ones like the 210 and 238 use line pressure to do the work and deliver far more flow for the same coil. Function: 2/2 to stop or pass, 3/2 to pilot a spring-return actuator, 5/2 to drive a double-acting one. Body and seal: brass for general service, stainless for corrosives, and the elastomer chosen against the fluid and its temperature.
Select your valve
ASCO™ solenoid valves we supply
Narrow the line by port size, media and voltage — then open the series for its full technical data. Every specification below comes from the manufacturer’s published data.
210
210 (8210) 2-Way Solenoid Valves
General-service 2/2 pilot-operated solenoid valves — the widest size range in the line, in brass or stainless steel, for liquids, corrosive fluids and air or inert gas.
- 1/4" – 2 1/2"
- Cv 0.88 – 45
- Brass / stainless
262 / 263
262 & 263 (8262 / 8263) High-Flow Solenoid Valves
Direct-acting 2/2 valves built for high flow in demanding service — steam, hot water, fuels, biodiesel and cryogenic fluids — in brass or stainless steel.
- Direct acting
- Steam & cryogenic
- Brass / stainless
320
320 (8320) 3-Way General Service Solenoid Valves
Direct-acting 3/2 valves in brass or 303 stainless steel that need no minimum operating pressure differential — universal, normally closed and normally open, mountable in any position and SIL 3 capable in NC constructions.
- No min. differential
- SIL 3 capable (NC)
- UL · CSA · ATEX
327
327 (8327) 3/2-Way Solenoid Valves
Direct-acting 3/2 valves with a balanced-poppet construction that needs no minimum operating pressure — high flow on low power, with PTFE guide rings and graphite-loaded seals against sticking. The pilot workhorse in power, refining and chemical plants.
- Balanced poppet
- ATEX · SIL capable
- 10 W
316
316 (8316) 3-Way Solenoid Valves
High-flow 3/2 valves with a diaphragm-poppet construction, used to pilot large actuators and drive fast closure on big control valves. The resilient seat gives tight shut-off on air, inert gas and liquids.
- Up to 1"
- Cv to 12.5
- Pilots large actuators
238
238 (8238) Pilot Solenoid Valves
Compact 2/2 pilot-operated general-service valves with a short stroke that extends cycle life, for air, inert gas, water and light oil in commercial and industrial equipment.
- 3/8" – 1"
- Cv 4.5
- 4 – 6.9 W
327C
327C (8327C) High-Flow Direct-Acting Valves
A separate family from the 327: stainless-steel 3/2 direct-acting valve with zero minimum operating pressure and a balanced poppet that delivers high flow on very low power. Built for power stations, refineries and chemical plants, with the heaviest hazardous-area certification in the line.
- Zero min. pressure
- IP66 / IP68 · 4X · 6P
- UL · CSA · ATEX · IECEx
220
220 (8220) Steam and Hot Water Valves
Two-way brass valve for steam and hot water with a floating PTFE diaphragm. Emerson claims up to 60 % more flow than competing offerings, and the screwed removable bonnet lets you inspect it without pulling the valve.
- 3/8" – 2 1/2"
- Cv 3 – 45
- Floating PTFE diaphragm
222
222 (8222) High-Temperature Steam Valves
Pilot-operated valve with a Y-body floating piston or diaphragm design for high-temperature steam, in brass or stainless — with a cryogenic (LT) construction at the other extreme, rated from −320 °F.
- To 353 °F steam
- Cryogenic LT to −320 °F
- Brass / stainless
221
221 (8221) Slow-Closing Water Valves
Slow-closing brass valve for cold and hot water: the closing profile kills water hammer on the high-flow lines that would otherwise shake the pipework — laundries, moulding, sterilisers and autoclaves.
- Slow-closing
- Cv to 38
- 3/8" – 2 1/2"
314
314 (8314) Direct-Acting Solenoid Valves
Direct-acting 3/2 general-service valve with one spring and two moving parts — the simplest thing that will pilot a control valve or a small actuator, and SIL 3 capable per IEC 61508 in normally-closed constructions.
- SIL 3 capable (NC)
- From 0.48 W
- Two moving parts
344
344 (8344) 4-Way Poppet Solenoid Valves
Four-way valve with a piston-operated poppet design for high flow — the one that drives a double-acting actuator, in sizes to 1" and Cv to 5.6.
- 1/4" – 1"
- Cv to 5.6
- Piston-operated poppet
342
342 (8342) 4-Way Solenoid Valves
High-flow slide-style 4-way valve in single or double solenoid, with PTFE seals and brass or stainless body — for dust collectors, heating equipment, biofuels and refining.
- Slide-style
- PTFE seals
- From 1 psi
345
345 (8345) Compact General Service Valves
Compact 4-way valve for low-flow duty, in brass or stainless with a 1/16" orifice — where the job is to switch a small actuator, not to move volume.
- Compact 4-way
- Cv 0.08 – 0.09
- To 150 psi
362 / 562
362 & 562 (8362 / 8562) Spool Valves
Slide-spool distributors built for piloting and automating control valves in upstream, midstream and downstream oil & gas: the 362 is 3-way for single-acting actuators, the 562 is 4-way for double-acting. Brass or 316L stainless for corrosion resistance.
- Oil & gas piloting
- 316L stainless
- From 1.4 W
223
223 (8223) High-Pressure Solenoid Valves
The high-pressure member of the line: a pilot-operated valve with rugged piston construction and an angle body for high flow, rated to 1,500 psi (103 bar). Note that Emerson classifies it under solenoid valves, not in its High Pressure Valves category — which is a TESCOM™ catalogue.
- To 1,500 psi (103 bar)
- 1/4" – 3/4"
- CSA · CE · ATEX
551
551 (8551) Solenoid Spool Valves
Compact 1/4" spool valves in 3/2 and 5/2 that mount straight onto actuators through the NAMUR interface (VDI/VDE 3845). Rigid T-seals plus flexible O-rings give tight shut-off and tolerance to dirt, in single or double solenoid.
- NAMUR direct mount
- 3/2 ↔ 5/2 convertible
- From 0.48 W
No series match that combination.
Clear a filter — or tell us the duty and our application engineers will pick the valve.
Request a Quote →Series 210
210 (8210) 2-Way Solenoid Valves
General-service 2/2 pilot-operated solenoid valves — the widest size range in the line, in brass or stainless steel, for liquids, corrosive fluids and air or inert gas.
Technical data
- Port size
- 1/4", 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2"
- Function
- 2/2 normally closed · 2/2 normally open
- Body material
- Brass · stainless steel
- Seal material
- NBR
- Flow factor (Cv)
- 0.88 – 45 across the family
- Orifice
- 5/16" – 1.75"
- Operating pressure
- Min 1 – 10 psi · max 125 – 200 psi (air) and 125 – 150 psi (water), by construction
- Fluid temperature
- 32 – 180 °F
- Ambient temperature
- 32 – 104/125/140 °F by construction
- Coil voltages
- 110/120/208/220/240 V AC · 12/24 V DC
Series 262 / 263
262 & 263 (8262 / 8263) High-Flow Solenoid Valves
Direct-acting 2/2 valves built for high flow in demanding service — steam, hot water, fuels, biodiesel and cryogenic fluids — in brass or stainless steel.
Technical data
- Port size
- 1/8", 1/4", 3/8", 3/4" · NPT
- Function
- 2/2 normally closed and normally open constructions
- Operation
- Direct acting
- Body material
- Brass · stainless steel
- Seal material
- NBR
- Flow factor (Cv)
- 0.05 – 1.0 across the family
- Max operating pressure
- Air 20 – 750 psi · water 17 – 750 psi · light oil 17 – 725 psi, by construction
- Ambient temperature
- From −40 °F to 140 °F depending on construction
- Fluid temperature
- −13 to 180 °F on standard constructions · −320 to 150 °F on the cryogenic (LT) construction
Series 320
320 (8320) 3-Way General Service Solenoid Valves
Direct-acting 3/2 valves in brass or 303 stainless steel that need no minimum operating pressure differential — universal, normally closed and normally open, mountable in any position and SIL 3 capable in NC constructions.
Technical data
- Port size
- 1/8" and 1/4" NPT
- Operation
- Direct acting — no minimum operating pressure differential required
- Function
- 3/2 universal (pressure at any port) · 3/2 normally closed · 3/2 normally open
- Body material
- Brass · 303 stainless steel
- Seal material
- NBR or cast UR seals and disc; 305/430F/302 stainless internals
- Orifice
- 1/16" (1.6 mm) · 3/32" (2.4 mm) · 1/8" (3.2 mm) · 11/64" (4.4 mm)
- Flow factor (Cv)
- 0.09 – 0.35 (Kv 0.08 – 0.30)
- Operating pressure — NC
- Max AC to 225 psi (15 bar) · max DC to 160 psi (11 bar)
- Operating pressure — NO
- Max AC to 250 psi (17 bar) · max DC to 160 psi (11 bar)
- Operating pressure — universal
- Max AC 175 psi (12 bar) · max DC 125 psi (9 bar), by orifice
- Max fluid temperature
- AC 200 °F (93 °C) · DC 150 °F (66 °C)
- Ambient temperature
- AC 32–125 °F (0–52 °C) · DC 32–104 °F (0–40 °C); some stainless constructions to −40 °F (−40 °C)
- Power
- AC 10.1 W / 17.1 W · DC 9.1 W / 11.6 W / 22.6 W (class F coil)
- Enclosure
- Standard watertight Types 1, 2, 3, 3S, 4, 4X · optional explosionproof Types 3, 3S, 4, 4X, 6, 6P, 7, 9 ("EF" prefix)
- Approvals
- CSA certified · UL listed · applicable CE directives · SIL 3 capable per IEC 61508 in NC constructions (third-party assessed by exida) · ATEX/IECEx with "EV" prefix
- Coil voltages
- 24/120/240/480 V AC 60 Hz · 110/220 V AC 50 Hz · 6/12/24/120/240 V DC
Series 327
327 (8327) 3/2-Way Solenoid Valves
Direct-acting 3/2 valves with a balanced-poppet construction that needs no minimum operating pressure — high flow on low power, with PTFE guide rings and graphite-loaded seals against sticking. The pilot workhorse in power, refining and chemical plants.
Technical data
- Port size
- 1/4" · 1/2"
- Operation
- Direct acting — zero minimum operating pressure required
- Function
- 3/2 normally closed · 3/2 universal
- Body material
- Aluminum · brass · stainless steel
- Seal material
- NBR · FKM/FPM · VMQ / (F)VMQ
- Orifice
- 1/4" · 5.7 mm · 12 mm
- Flow factor (Cv)
- 0.43 – 1.8
- Power
- 10 W · class H coil
- Port fitting
- NPTF
- Approvals
- ATEX Zone 1-21 · IEC 61508, SIL capable
- Coil voltage
- 24 V DC
Series 316
316 (8316) 3-Way Solenoid Valves
High-flow 3/2 valves with a diaphragm-poppet construction, used to pilot large actuators and drive fast closure on big control valves. The resilient seat gives tight shut-off on air, inert gas and liquids.
Technical data
- Port size
- 1/4", 3/8", 1/2", 3/4", 1"
- Function
- 3/2 normally closed · 3/2 normally open
- Operation
- Diaphragm-poppet construction
- Body material
- Brass · stainless steel
- Seal material
- NBR · FKM/FPM
- Orifice
- 5/16" · 5/8" · 11/16" · 1"
- Flow factor (Cv)
- 1.5 – 12.5
- Operating pressure
- Min 10 psi · max 125 – 250 psi by model
- Fluid temperature
- 32 – 180 °F by construction
- Ambient temperature
- 32 – 125 °F (32 – 104 °F on DC constructions)
- Power
- 6.1 / 8.1 W · 17.1 / 22.6 W by model
- Area classification
- Explosion proof (Class I Div 1 / Zone 1) · safe area, general purpose
- Approvals — low-power constructions
- UL & CSA for Class I Div 1 groups A–D and Class II Div 1 groups E–G · nonincendive Class I Div 2 · applicable CE directives · SIL 3 capable per IEC 61508 (third-party certified by exida) · ATEX/IECEx with "EV" prefix
- Coil voltages
- 12/24/120/240 V DC · 24/110/115/120/208/220/240/440/480 V AC · 50, 60 and 50/60 Hz
Series 238
238 (8238) Pilot Solenoid Valves
Compact 2/2 pilot-operated general-service valves with a short stroke that extends cycle life, for air, inert gas, water and light oil in commercial and industrial equipment.
Technical data
- Port size
- 3/8", 1/2", 3/4", 1"
- Function
- 2/2 normally closed
- Operation
- Pilot operated
- Body material
- Brass · stainless steel
- Flow factor (Cv)
- 4.5
- Power
- 4 W · 5 W · 6 W · 6.9 W · class F coil
- Port fitting
- G ISO 228/1 BSPP
- Coil voltages
- 24 V DC · 24 V AC 50/60 Hz · 115 V AC 50 Hz · 230 V AC 50/60 Hz
Series 327C
327C (8327C) High-Flow Direct-Acting Valves
A separate family from the 327: stainless-steel 3/2 direct-acting valve with zero minimum operating pressure and a balanced poppet that delivers high flow on very low power. Built for power stations, refineries and chemical plants, with the heaviest hazardous-area certification in the line.
Technical data
- Port size
- 1/4" · G ISO 228/1 BSPP · NPTF
- Function
- 3/2 universal
- Operation
- Solenoid, direct acting — zero minimum operating pressure
- Body material
- Stainless steel
- Flow factor
- Standard 0.8 Cv (0.7 Kv) · NVR / TP-NVR 1.1 Cv (0.95 Kv) · IS and IS NVR 0.35 Cv (0.3 Kv) · IS TP-NVR 0.52 Cv (0.45 Kv)
- Coil class
- H
- Enclosure
- Types 4X and 6P · IP66 and IP68
- Area classification
- Class I Div 1 groups B, C, D and Class II groups E, F, G per UL 429 / UL 1203 and CAN/CSA Nos. 139, 30, 25 · Class I Zone 1 Group IIB+H₂ and Class II Zone 21 Group IIIC · ATEX and IECEx Ex db IIC Gb, Ex tb IIIC Db (IECEx UL 23.0019X, UL 23 ATEX 2971X)
- Approvals
- UL file E25549 for USA and Canada · single seal per UL 122701 · c-UL-us listed and recognized component · CSA · ATEX · IECEx
- Operating environment
- Hazardous · indoor · outdoor
- Coil voltages
- DC 6/12/24/48/120/240 · AC 24, 48, 110, 120, 208, 230, 240
Series 220
220 (8220) Steam and Hot Water Valves
Two-way brass valve for steam and hot water with a floating PTFE diaphragm. Emerson claims up to 60 % more flow than competing offerings, and the screwed removable bonnet lets you inspect it without pulling the valve.
Technical data
- Port size
- 3/8" – 2 1/2" NPT
- Function
- 2/2 normally closed · 2/2 normally open
- Body material
- Brass
- Seating elastomer
- PTFE · EPDM
- Orifice
- 5/8" · 1" · 1 1/8" · 1 1/4" on the documented constructions
- Flow factor (Cv)
- 3 – 45
- Fluid temperature
- 32 – 210 °F on the documented constructions
- Ambient temperature
- 32 – 125 °F (to 140 °F on some constructions)
- Power
- 6.1 · 8.1 · 10.1 · 16.1 W
- Coil class
- FT · H · HT · SU
- Coil voltages
- 24/110/115/120/208/220/240/440/480 V AC · 50, 60 and 50/60 Hz
Series 222
222 (8222) High-Temperature Steam Valves
Pilot-operated valve with a Y-body floating piston or diaphragm design for high-temperature steam, in brass or stainless — with a cryogenic (LT) construction at the other extreme, rated from −320 °F.
Technical data
- Port size
- 1/4", 3/8", 1/2", 3/4" NPT
- Function
- 2/2 normally closed
- Operation
- Pilot operated — Y-body floating piston or diaphragm design
- Body material
- Brass · stainless steel
- Seating elastomer
- PTFE · EPDM on the stainless construction
- Orifice
- 5/8" · 3/4"
- Flow factor (Cv)
- 1.2 – 5
- Fluid temperature
- To 353 °F on steam constructions · 300 °F on the stainless construction · −320 to 150 °F on the cryogenic (LT) construction
- Ambient temperature
- 32 – 125 °F (to 140 °F on some constructions)
- Power
- 6.1 · 8.1 · 10.1 · 17.1 · 40.6 W
- Coil class
- FT · HB · HP · HT · SU
Series 221
221 (8221) Slow-Closing Water Valves
Slow-closing brass valve for cold and hot water: the closing profile kills water hammer on the high-flow lines that would otherwise shake the pipework — laundries, moulding, sterilisers and autoclaves.
Technical data
- Port size
- 3/8" – 2 1/2" NPT
- Function
- 2/2 normally closed · 2/2 normally open
- Body material
- Brass
- Seating elastomer
- NBR
- Orifice
- 9/16" · 3/4" · 1" · 1 3/4" on the documented constructions
- Flow factor (Cv)
- 3 – 38
- Operating pressure
- Water 5 – 125 psi (DC constructions) · 5 – 150 psi (AC constructions)
- Fluid temperature
- 32 – 180 °F on AC constructions · 32 – 150 °F on DC constructions
- Ambient temperature
- 32 – 125 °F (AC) · 32 – 104 °F (DC)
- Power
- 6.1 · 8.1 · 11.6 · 16.1 · 22.6 · 24.6 W
- Coil class
- FB · FT · HB · HC · HT · SC
Series 314
314 (8314) Direct-Acting Solenoid Valves
Direct-acting 3/2 general-service valve with one spring and two moving parts — the simplest thing that will pilot a control valve or a small actuator, and SIL 3 capable per IEC 61508 in normally-closed constructions.
Technical data
- Port size
- 1/4" NPT
- Function
- 3/2 normally closed · 3/2 normally open · 3/2 universal
- Operation
- Solenoid, direct acting
- Body material
- Brass · stainless steel
- Seal material
- NBR
- Orifice
- 1/16" (2 mm) · 3/32"
- Flow factor (Cv)
- 0.05 – 0.25
- Operating pressure
- Max 150 psi (10 bar) · min 0 psi on low-power air/inert-gas constructions
- Fluid temperature
- −13 to 200 °F by construction · 140 °F (60 °C) on low-power constructions
- Ambient temperature
- −40 to 140 °F (−40 to 60 °C) on stainless low-power constructions
- Power
- 0.48 · 0.55 · 1.4 · 1.7 W
- Enclosure — low-power constructions
- Standard watertight Types 1, 2, 3, 3S, 4, 4X · optional explosionproof Types 3, 3S, 4, 4X, 6, 6P, 7, 9 ("EF" prefix)
- Approvals — low-power constructions
- UL & CSA for Class I Div 1 groups A–D and Class II Div 1 groups E–G · nonincendive Class I Div 2 · applicable CE directives · ATEX/IECEx with "EV" prefix
- Functional safety
- SIL 3 capable per IEC 61508, certified by exida — valid only when used normally closed
- Coil voltages
- 12/24/48 V DC · 110/120 V AC · 50, 60 and 50/60 Hz
Series 344
344 (8344) 4-Way Poppet Solenoid Valves
Four-way valve with a piston-operated poppet design for high flow — the one that drives a double-acting actuator, in sizes to 1" and Cv to 5.6.
Technical data
- Port size
- 1/4", 3/8", 1/2", 3/4", 1" NPT
- Function
- 4-way (4/2), single- and double-solenoid constructions
- Operation
- Piston-operated poppet design for high flow
- Body material
- Brass
- Seal material
- NBR
- Orifice
- 1/4" (6 mm) on 1/4" pipe · 3/8" (10 mm) on 3/8" through 1"
- Flow factor (Cv)
- 0.8 · 1.4 · 1.5 · 5.2 · 5.6
- Operating pressure
- Air min 10 psi, max 125 – 300 psi · water and light oil min 10 – 25 psi, max 125 – 300 psi
- Ambient temperature
- 32 – 104 °F on the documented construction · to 176 °F (80 °C) on the high-ambient low-power version
- Power
- 0.48 – 24.6 W across the family
- Enclosure — low-power constructions
- Standard watertight Types 1, 2, 3, 3S, 4, 4X · optional explosionproof Types 3, 3S, 4, 4X, 6, 6P, 7, 9
- Approvals — low-power constructions
- UL & CSA for Class I Div 1 groups A–D and Class II Div 1 groups E–G · nonincendive Class I Div 2 · applicable CE directives · ATEX/IECEx with "EV" prefix
Series 342
342 (8342) 4-Way Solenoid Valves
High-flow slide-style 4-way valve in single or double solenoid, with PTFE seals and brass or stainless body — for dust collectors, heating equipment, biofuels and refining.
Technical data
- Port size
- 1/4" · 3/8" NPT
- Function
- 4-way, single- or double-solenoid
- Operation
- Solenoid, direct acting — slide-style construction
- Body material
- Brass · stainless steel
- Seal material
- PTFE
- Orifice
- 3/16"
- Flow factor (Cv)
- 0.44 · 0.7
- Operating pressure
- Min 1 psi · max 125 psi (air) · 100 – 125 psi (water and light oil)
- Fluid temperature
- 32 – 160 °F
- Ambient temperature
- 32 – 125 °F (to 140 °F on some constructions)
- Power
- 16.1 W · 20.1 W
Series 345
345 (8345) Compact General Service Valves
Compact 4-way valve for low-flow duty, in brass or stainless with a 1/16" orifice — where the job is to switch a small actuator, not to move volume.
Technical data
- Port size
- 1/4" NPT
- Function
- 4-way (4/2)
- Operation
- Solenoid — Emerson does not qualify direct-acting or pilot-operated for this family
- Body material
- Brass · stainless steel
- Seal material
- NBR
- Orifice
- 1/16" (2 mm)
- Flow factor (Cv)
- 0.08 · 0.09
- Operating pressure
- Air, water and light oil 10 – 150 psi
- Fluid temperature
- 32 – 180 °F · 140 °F (60 °C) on low-power constructions
- Ambient temperature
- 32 – 125 °F
- Power
- 10.1 · 11.6 · 24.6 W · 1.4 W on low-power constructions
- Approvals — low-power constructions
- UL & CSA for Class I Div 1 groups A–D and Class II Div 1 groups E–G · nonincendive Class I Div 2 · applicable CE directives · ATEX/IECEx with "EV" prefix
Series 362 / 562
362 & 562 (8362 / 8562) Spool Valves
Slide-spool distributors built for piloting and automating control valves in upstream, midstream and downstream oil & gas: the 362 is 3-way for single-acting actuators, the 562 is 4-way for double-acting. Brass or 316L stainless for corrosion resistance.
Technical data
- Port size
- 1/4" through 1" per the manufacturer description
- Function
- 362: 3-way 2-position, normally closed · 562: 4-way, including double-solenoid external-pilot constructions
- Operation
- Slide-spool distributor
- Body material
- Brass · 316L stainless steel
- Seal material
- FKM
- Operating pressure
- 40 – 150 psi on the documented construction
- Fluid temperature
- 0 – 140 °F on the documented construction
- Power
- 1.4 W · coil class FT
- Application
- Piloting and automation of control valves — 362 for single-acting actuators, 562 for double-acting
- Voltage
- 24 V DC
Series 223
223 (8223) High-Pressure Solenoid Valves
The high-pressure member of the line: a pilot-operated valve with rugged piston construction and an angle body for high flow, rated to 1,500 psi (103 bar). Note that Emerson classifies it under solenoid valves, not in its High Pressure Valves category — which is a TESCOM™ catalogue.
Technical data
- Port size
- 1/4", 3/8", 1/2", 3/4" NPT
- Function
- 2/2 normally closed — closed when de-energized
- Operation
- Pilot operated, rugged piston construction
- Body material
- Brass · 300 stainless steel
- Seal material
- Brass body: NBR, PA, PTFE · stainless body: PTFE, NBR · 305/430F/302 stainless internals
- Orifice
- 5/16" (8 mm) · 3/8" (10 mm) · 3/4" (19 mm)
- Flow factor (Cv)
- 1.5 · 3.2 · 7.8 (Kv 1.3 · 2.7 · 6.7)
- Operating pressure
- Min 10 psi (0.7 bar) or 25 psi (1.7 bar) by construction · max AC 750 psi (52 bar) or 1,500 psi (103 bar) · max DC 400–500 psi (28–34 bar), 450 psi (31 bar) on 3/4"
- Max fluid temperature
- AC 200 °F (93 °C) · DC 150 °F (65 °C)
- Ambient temperature
- AC 32–125 °F (0–52 °C) · DC 32–104 °F (0–40 °C)
- Power
- AC 10.1 W / 17.1 W · DC 22.6 W (class F coil)
- Enclosure
- Standard watertight Types 1, 2, 3, 3S, 4, 4X · optional explosionproof Types 3, 3S, 4, 4X, 6, 6P, 7, 9 ("EF" prefix)
- Approvals
- CSA certified · applicable CE directives · ATEX/IECEx with "EV" prefix
- Coil voltages
- 24/120/240/480 V AC 60 Hz · 110/220 V AC 50 Hz · 6/12/24/120/240 V DC
Series 551
551 (8551) Solenoid Spool Valves
Compact 1/4" spool valves in 3/2 and 5/2 that mount straight onto actuators through the NAMUR interface (VDI/VDE 3845). Rigid T-seals plus flexible O-rings give tight shut-off and tolerance to dirt, in single or double solenoid.
Technical data
- Port size
- 1/4" NPT and BSP
- Function
- 3/2 normally closed · 5/2 spring return · 5/2 solenoid air-operated return — one flow-plate design converts 3/2 to 5/2
- Operation
- Solenoid spool, NAMUR direct mount per VDI/VDE 3845
- Body material
- Anodized aluminum · brass · stainless steel
- Seal material
- NBR (T-seals + O-rings)
- Orifice
- 1/4" · 6 mm
- Flow factor (Cv)
- 0.86 – 12.5
- Power
- 0.48 – 24.6 W across the family · coil classes F, FT, H, HC, HT
- Coil voltages
- 12 V DC · 24 V DC
Need an ASCO™ solenoid valve?
Send us the catalog number, the port size and the service — we confirm the series, the coil and the body material, and quote it from our Orlando, FL warehouse.