Air-piloted 2/2 valves with SUS316L/SUS304 bodies, normally closed or open actions and...
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Air-piloted 2/2 valves with SUS316L/SUS304 bodies, normally closed or open actions and action-specific flow direction. Match code, medium and pilot-pressure limits; request a quotation with quantity and destination.
Know your model? Send it with the quantity for a quote. Not sure? Start with a photo, label or description. We help identify the model and clarify availability and lead time. Mixed parts lists are welcome too.
Choose a type; send a model or photo if unsure.
2JS / 2JW
Blank suffix · NC · lower-side flow
2JSY / 2JWY
Y · water-hammer NC · air only · upper-side flow
2JSK / 2JWK
K · normally open · lower-side flow
Send the model, quantity and destination. For multiple items, attach a parts list or BOM.
Match a 2J model code
2J exact action-specific DN Q pilot and differential-pressure table
Helpful for Model Matching:
| Function / body material | Air-piloted 2/2 angle-seat valve; S=SUS316L, W=SUS304. Blank: NC without water hammer; Y: water-hammer NC; K: normally open. |
| Flow direction | Blank and K: medium enters the lower inlet side, from bottom to upper part of piston. Y: medium enters upper inlet side, from upper to bottom part. Match the body arrow and installed direction. |
| Blank NC size limits | 150: port 10/15, Q40/50; 200: port 20, Q40/50/63; 250: port 25, Q63/80; 320: port 32, Q63/80. |
| K / Y size limits | 150: port 10/15, Q40/50; 200: port 20, Q40/50; 250: port 25, Q50/63; K320: port 32, Q63/80; Y320: port 32, Q63 only. The actuator combinations for the blank NC code do not apply to these K/Y configurations. |
| Ports / threads | 10=3/8, 15=1/2, 20=3/4, 25=1, 32=1 1/4. G=G thread, T=NPT. Orifice codes 150/200/250/320 correspond to 15/20/25/32 mm. |
| Blank NC pilot / differential pressure | Minimum pilot / maximum differential (bar): 150-Q40 4.8/13; 150-Q50 4.3/16; 200-Q40 4.8/6.5; 200-Q50 4.3/11; 200-Q63 4.2/16; 250-Q63 4.2/11; 250-Q80 5.0/16; 320-Q63 4.2/6; 320-Q80 5.0/15. |
| K / Y pressure boundary | Specification lists 16 bar maximum differential for K/Y, but minimum pilot is specified through the separate normally-open and water-hammer pressure curves. Confirm the exact DN/Q curve at the requested working pressure; 16 bar is not an unconditional operating promise. |
| Maximum control pressure | Q40/50/63: 10 bar; Q80: 7 bar. These are control-pressure ceilings, not minimum pilot requirements or fluid ratings. |
| Medium / viscosity | General medium table: air, liquid, steam; viscosity below 60 mm²/s. Y water-hammer type is air only and cannot be used for liquid. Confirm actual medium and seal compatibility. |
| Temperature relationship | Medium −20 to +180°C; ambient −10 to +60°C; dew point −20°C or less. The plotted relationship reduces permissible ambient temperature as medium temperature rises; do not combine +180°C medium with +60°C ambient. |
| Control medium / installation | Air or neutral air filtered by 40 μm element. Actuator rotates 360° and includes a visual position indicator. Match DN, Q actuator size, control-port size and drawing before replacement. |
| Seal/material scope | The parts list includes PTFE seals and also NBR/Viton O-rings, PA6 actuator parts and other materials. SUS316L/SUS304 is body identity; the complete assembly is not all stainless steel, and its seals are not all PTFE. |
Ordering code matching
Code format
2J[S/W][blank/Y/K][150/200/250/320]-[port]-Q[actuator]-[G/T]Table-limited action, size and actuator2JS150-15-Q50-G2JW200-20-Q63-T2JSK150-15-Q50-G2JWY250-25-Q50-T2JS320-32-Q80-G| ①Material / action | ②Orifice / connection | ③Q actuator / pressure |
|---|---|---|
| S SUS316L; W SUS304. Blank NC without water hammer; Y water-hammer NC, air only; K NO. Blank/K lower inlet flow, Y upper inlet flow. | 10=3/8, 15=1/2, 20=3/4, 25=1, 32=1 1/4. G=G thread, T=NPT. Orifice codes 150/200/250/320 correspond to 15/20/25/32 mm. | Q40/50/63/80 follows the action-specific row, not every DN/Q combination. Confirm pilot pressure and operating differential using the matching table or curve. |
If the label is incomplete, send the readable parts together with a photo.
2JSK150-15-Q50-GS/WBody material
S SUS316L; W SUS304.
blank/Y/KAction / direction
Blank NC and K NO lower-side flow; Y water-hammer NC upper-side flow, air only.
150-15-Q50Orifice / port / actuator
DN15, 1/2 connection, 50 mm actuator; match permitted table row.
G/TThread
G G-thread; T NPT.
2J is one air-piloted 2/2 angle-seat valve family with SUS316L or SUS304 bodies. Match normally-closed, normally-open or water-hammer configuration, installed flow direction and the action-specific DN/Q pressure limit before replacement. Send the complete model, medium, pressure, quantity and destination for quotation.
No. The catalogue explicitly restricts this configuration to air and says it cannot be used for liquid. It also uses upper-side inlet flow, unlike blank and K lower-side inlet flow. Send your actual medium and flow direction for selection.
150: port 10/15, Q40/50; 200: port 20, Q40/50/63; 250: port 25, Q63/80; 320: port 32, Q63/80. 150: port 10/15, Q40/50; 200: port 20, Q40/50; 250: port 25, Q50/63; K320: port 32, Q63/80; Y320: port 32, Q63 only. The actuator combinations for the blank NC code do not apply to these K/Y configurations.
No. Blank NC has row-specific differential limits; K/Y require their fluid-pressure/control-pressure curve. Pilot pressure must remain below 10 bar for Q40/50/63 or 7 bar for Q80. We confirm the actual pressure and temperature conditions through the inquiry.
2J
2J Add other models, quantities, photos, drawings, or a BOM. One request can cover several product groups.