2/2-way valves
121/122 direct-operated 2/2-way solenoid valves
Parker 121K · 121V · 122K
- 2/2-way, direct operated
- series 121K, 121V, 122K
- air, neutral gases and liquids
- modular coil system, ATEX available
Home › Selection guide
Select by application, not by series number.
You know the application but not the Parker series. Narrow down what the part has to do — you get the series from the authorized range that come into question.
This pre-selection is not a sizing exercise. It rests solely on the data held in our catalogue records. Whether a given version is permissible for your operating point is decided by rated pressure, temperature, sealing material and connection in the manufacturer’s data sheet — which we supply with the quotation.
2/2-way valves
221/321/322 coupled- and pilot-operated 2/2-way solenoid valves
Parker 221G · 321 · 322
- 2/2-way, coupled or pilot operated (diaphragm/piston)
- series 221G, 321, 322
- water, hot water, steam; low-water-hammer types
- standard mount or enclosed versions
Stated in the catalogue: medium temperatures up into the steam range
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3/2-way valves
131/133 direct-operated 3/2-way solenoid valves
Parker 131K · 132 · 133K · 331
- 3/2-way, direct operated
- series 131K, 132, 133K, 331
- pressurise, vent, divert
- shares coil groups with the 2-way range
Compact valves
N74, PM128, PM146 compact solenoid valves
Parker N74 · PM128 · PM146 · 139
- 2/2- and 3/2-way, direct operated
- series N74, PM128, PM146, 139
- ruby or FKM seat
- −30 °C to +140 °C, WB/ZB coils
Stated in the catalogue: −30 °C to +140 °C
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Pilot valves for actuators
341/342 NAMUR valves (3/2- and 5/2-way)
Parker 341N · 342N
- 3/2- and 5/2-way, NAMUR interface
- series 341N, 342N
- spring return or bi-stable
- direct mounting on quarter-turn actuators
Pilot valves for actuators
341P/345/347 piped pneumatic valves
Parker 341P · 345 · 347
- 3/2- and 5/2-way, piped
- series 341P, 345, 347
- mono-stable or bi-stable (2 pilots)
- for cylinders and actuators
Stainless-steel valves
Stainless-steel solenoid valves (303/316L)
Parker Edelstahl 303 / 316L
- 303 / 316L stainless steel
- catalogue sections stainless 303 and 316L
- 2/2-, 3/2- and NAMUR functions
- for aggressive media and environments
Industrial valves
Gold Ring industrial valves (series 71–73)
Parker 71215 · 71315 · 7321
- 2/2- and 3/2-way, NPT connections
- series 71215, 71315, 7321 et al.
- air, water, oils, steam
- complete valve-coil assemblies
Stated in the catalogue: air, water, oils and steam; NPT connections
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Process valves
F-series piston valves (2/2-way)
Parker 04F–20F · FS
- 2/2-way piston valves, pilot operated
- frame sizes 04F to 20F, FS steam line
- air, water, light oil, steam
- rebuild kits for all versions
Stated in the catalogue: dedicated FS steam series
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Process valves
HP-series high-pressure process valves
Parker HP113–HP344
- 2/2- and 3-way line valves
- series HP113–HP344
- pressure classes 275 # to 4000 #
- spares: stems, seats, diaphragms, packings
Stated in the catalogue: pressure classes 275 # to 4000 #, 1/2–2 inch NPT
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Angle-seat valves
PA angle-seat valves (pneumatically actuated)
Parker PA10–PA65
- angle-seat valves, pneumatically actuated
- DN 10 to DN 65 (3/8–2 1/2 inch)
- spring return NC / NO
- stainless steel, G or NPT connection
Stated in the catalogue: DN 10 to DN 65, G or NPT thread
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Pressure regulators
EPP4 electro-pneumatic pressure regulators
Parker P4B · P4C
- electro-pneumatic proportional regulators
- series P4B, P4C (EPP4)
- Basic, Comfort, Comfort ATEX
- service and spares for legacy EPP3 units
Coils and accessories
Solenoid coils, housings and connectors
Parker ZB · WB · JB · 481–496
- coil groups ZB, WB, JB et al.
- explosion-protected versions (Ex/ATEX)
- voltages 12 V DC to 230 V AC
- DIN plugs, housings, accessories
Spare parts
Spare-part and repair kits
Parker 7K · Rebuild-Kits
- repair and rebuild kits
- plunger assemblies, springs, diaphragms
- for 121/131/321/341, Gold Ring, F and HP series
- matched via the valve part number
Instrumentation tube fittings
A-LOK® two-ferrule tube fittings
Parker A-LOK
- Tube OD 1/16" to 2", metric 2 to 32 mm
- Suparcase® hardened back ferrule resists vibration fatigue
- Molybdenum-disulfide coated nut prevents galling
- Options incl. oxygen cleaning (C3), NACE-compliant material, certified nuclear quality (CNQ)
Stated in the catalogue: tube OD 1/16" to 2", metric 2 to 32 mm
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Instrumentation tube fittings
CPI™ single-ferrule tube fittings
Parker CPI
- Tube OD 1/16" to 2", metric 2 to 32 mm
- 316 stainless steel standard with HTC traceability, other materials available
- Silver-plated nut thread prevents galling
- Interchangeable with common other makes (reference in every ordering table)
Stated in the catalogue: tube OD 1/16" to 2", metric 2 to 32 mm
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Pipe & adapter fittings
Instrumentation pipe fittings and ISO adapters
Parker NPT/ISO
- NPT sizes 1/16" to 2"
- Materials: 316 stainless steel, brass, steel
- Rolled male threads for extra strength
- ISO/BSP adapters (taper and parallel) incl. sealing washers
Stated in the catalogue: NPT sizes 1/16" to 2", ISO/BSP adapters
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Pipe & adapter fittings
10k high-pressure pipe fittings
Parker SSHP
- Rated 10,000 psi (690 bar) at 22 °C
- 316L stainless steel, part number suffix -SSHP
- NPT threads to ANSI B1.20.1
- Nipples, adapters, couplings, elbows, tees and crosses
Stated in the catalogue: 10,000 psi (690 bar) at 22 °C; AISI 316L −255 °C to 649 °C
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Instrumentation tube fittings
Phastite® permanent tube connections
Parker PH
- Up to 22,500 psi (1,550 bar)
- Temperature range -45 °C to 93 °C
- Tube OD 1/4" to 1" or 6 to 25 mm, wall 0.035" to 0.188"
- Materials: 316 SS, Inconel® 625, Incoloy® 825, Super Duplex
Stated in the catalogue: up to 22,500 psi (1,550 bar), −45 °C to 93 °C
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Instrumentation tube fittings
MPI™ medium-pressure instrumentation fittings
Parker MP7
- Working pressure up to 15,000 psi
- Sizes 1/4" to 1" (including 9/16")
- Suparcase® hardened front and back ferrules
- Inverted nut with molybdenum-disulfide coating
Stated in the catalogue: working pressure up to 15,000 psi
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Tubing & materials
316/316L instrumentation tubing
Parker TUBE-316
- 316/316L material
- Outside diameters 1/4" to 1"
- Wall thicknesses .028" to .120"
- Fully traceable to source
Tube working tools
Tube working and assembly tools
Parker PT
- PTB tube benders: imperial 1/4" to 1/2", metric 6 to 12 mm
- PT-D/PT-DL deburring tools for 1/4" to 2" or 6 to 50 mm
- Tru-Kut sawing guide PT-V for square cuts (±1°)
- Pre-assembly and marking tools (PPT, PTM) for correct insertion depth
Ball valves
Ball and needle valves Series B
Parker 4121-BV
- 2- and 3-way
- up to 207 bar
- 316 stainless
- compression/thread/tube
Stated in the catalogue: up to 207 bar; compression, threaded and pipe connections
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Not sure which version fits?
Give us medium, pressure, temperature and connection. You receive a proposal with data sheet and availability, usually within 24 hours on business days (for standard series).