This is a legacy product, and replaced bySQ1231DN-51-C4-Q, http://smcpneumatics.com/assets/images/pdf/ar.pdf

Check Valve Series AK 1

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Regulator manifold series ARM is available in standard size 1000 & 2000 and the modular style is available in sizes 2500 & 3000. Standard models are available with 4 connection methods and have backflow function availability. Modular styles can be freely mounted on a manifold station and have easy set up using the new handle. Regulator manifold, modular type, Metric type threads, Optimal

Base Mounted Wiring: 01T (Plug-in w/Terminal Block), Pilot Type: Internal Pilot or None, Junction Cover: 1 (One-piece Junction Cover), Stations: 3 Stations, Passage: 2 (P and EA,EB: Common, Port A,B: Bottom), Port Size: 01 (1/8), Thread: T (NPTF), Control Unit: None, Voltage of Air Release Valve: w/o Air Release Valve, Q: Q (CE Marked)

Base Mounted Wiring: 01 (Plug-in, Insert Plug w/Lead Wire), Pilot Type: Internal Pilot or None, Junction Cover: Separate Junction Cover or None, Stations: 3 Stations, Passage: 2 (P and EA,EB: Common, Port A,B: Bottom), Port Size: 01 (1/8), Thread: T (NPTF), Control Unit: None, Voltage of Air Release Valve: w/o Air Release Valve, Q: Q (CE Marked)

Base Mounted Wiring: 01 (Plug-in, Insert Plug w/Lead Wire), Pilot Type: Internal Pilot or None, Junction Cover: Separate Junction Cover or None, Stations: 6 Stations, Passage: 2 (P and EA,EB: Common, Port A,B: Bottom), Port Size: 01 (1/8), Thread: T (NPTF), Control Unit: None, Voltage of Air Release Valve: w/o Air Release Valve, Q: Q (CE Marked)

Series: 3 (VQZ3000), Composite Symbol: 3 (3 Position Closed Center), Seal Type: 0 (Metal Seal), Function: KR (High Pressure 0.9W - DC Only, External Pilot), Coil Voltage: 5 (24VDC), Lead Wire: L (L Plug Connector w/Lead Wire 0.3m), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02 (Base Mounted w/Sub-plate Rc1/4), Q: Q (CE Marked)

Series: 2 (VQZ2000), Composite Symbol: 2 (2 Position Double), Seal Type: 0 (Metal Seal), Function: Standard (0.35W DC, AC), Coil Voltage: 3 (110VAC 50/60HZ), Lead Wire: Y (DIN Connector w/o Light, w/o Surge Suppressor), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02T (Base Mounted w/Sub-plate NPTF1/4), Q: Q (CE Marked)

Series: 3 (VQZ3000), Composite Symbol: 1 (2 Position Single), Seal Type: 0 (Metal Seal), Function: KR (High Pressure 0.9W - DC Only, External Pilot), Coil Voltage: 5 (24VDC), Lead Wire: L (L Plug Connector w/Lead Wire 0.3m), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02T (Base Mounted w/Sub-plate NPTF1/4), Q: Q (CE Marked)

Series: 3 (VQZ3000), Composite Symbol: 3 (3 Position Closed Center), Seal Type: 1 (Rubber Seal), Function: B (High Speed Response 0.9W - DC Only), Coil Voltage: 5 (24VDC), Lead Wire: YZ (DIN Terminal w/Light & Surge Suppressor), Manual Override: B (Locking Slotted Style), IP65 Compliant: W (Compliant), Port Size: 03T (Base Mounted w/Sub-plate NPTF3/8), Q: Q (CE Marked)

Series: 2 (VQZ2000), Composite Symbol: 2 (2 Position Double), Seal Type: 0 (Metal Seal), Function: Standard (0.35W DC, AC), Coil Voltage: 3 (110VAC 50/60HZ), Lead Wire: Y (DIN Connector w/o Light, w/o Surge Suppressor), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02 (Base Mounted w/Sub-plate Rc1/4), Q: Q (CE Marked)

Series: 3 (VQZ3000), Composite Symbol: 3 (3 Position Closed Center), Seal Type: 1 (Rubber Seal), Function: B (High Speed Response 0.9W - DC Only), Coil Voltage: 5 (24VDC), Lead Wire: YZ (DIN Terminal w/Light & Surge Suppressor), Manual Override: B (Locking Slotted Style), IP65 Compliant: W (Compliant), Port Size: 03 (Base Mounted w/Sub-plate Rc3/8), Q: Q (CE Marked)

Series: 2 (VQZ2000), Composite Symbol: 3 (3 Position Closed Center), Seal Type: 1 (Rubber Seal), Function: BR (High Speed Response 0.9W - DC Only, External Pilot), Coil Voltage: 5 (24VDC), Lead Wire: YS (DIN Terminal, w/oLight, w/Surge Suppressor), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02 (Base Mounted w/Sub-plate Rc1/4), Q: Q (CE Marked)

Series: 2 (VQZ2000), Composite Symbol: 3 (3 Position Closed Center), Seal Type: 1 (Rubber Seal), Function: BR (High Speed Response 0.9W - DC Only, External Pilot), Coil Voltage: 5 (24VDC), Lead Wire: YZ (DIN Terminal w/Light & Surge Suppressor), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02 (Base Mounted w/Sub-plate Rc1/4), Q: Q (CE Marked)

Series: 3 (VQZ3000), Composite Symbol: 3 (3 Position Closed Center), Seal Type: 1 (Rubber Seal), Function: BR (High Speed Response 0.9W - DC Only, External Pilot), Coil Voltage: 5 (24VDC), Lead Wire: YS (DIN Terminal, w/oLight, w/Surge Suppressor), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02 (Base Mounted w/Sub-plate Rc1/4), Q: Q (CE Marked)

Series: 3 (VQZ3000), Composite Symbol: 3 (3 Position Closed Center), Seal Type: 1 (Rubber Seal), Function: BR (High Speed Response 0.9W - DC Only, External Pilot), Coil Voltage: 5 (24VDC), Lead Wire: YZ (DIN Terminal w/Light & Surge Suppressor), Manual Override: Non-locking Push Style, IP65 Compliant: No, Port Size: 02 (Base Mounted w/Sub-plate Rc1/4), Q: Q (CE Marked)

Series: 3 (VQZ3000), Composite Symbol: 2 (2 Position Double), Seal Type: 1 (Rubber Seal), Function: B (High Speed Response 0.9W - DC Only), Coil Voltage: 5 (24VDC), Lead Wire: Y (DIN Connector w/o Light, w/o Surge Suppressor), Manual Override: Non-locking Push Style, IP65 Compliant: W (Compliant), Port Size: 02T (Base Mounted w/Sub-plate NPTF1/4), Q: Q (CE Marked)

to 60C, Electrical entry: grommet, type D DIN connector, type Y DIN connector, VALVE, SOFT START 3/8, VALVE, AV SOFT START UP BODY PORT, GA, AV BODY PORT 3/8 NPT, 1.05821 lb, ModelPort sizeProof pressureOperating pressure rangePressure gauge port sizeAmbient and fluid temperatureEffective area (mm2)Mass (kg)Electrical specificationsPilot valve manual override1(P) 2(A)2(A) 3(R)

to 60C, Electrical entry: grommet, type D DIN connector, type Y DIN connector, VALVE, SOFT START 3/8, VALVE, AV SOFT START UP BODY PORT, G7, AV BODY PORT 3/8 NPT, 1.32277 lb, ModelPort sizeProof pressureOperating pressure rangePressure gauge port sizeAmbient and fluid temperatureEffective area (mm2)Mass (kg)Electrical specificationsPilot valve manual override1(P) 2(A)2(A) 3(R)

to 60C, Electrical entry: grommet, type D DIN connector, type Y DIN connector, VALVE, SOFT START 3/8, VALVE, AV SOFT START UP BODY PORT, GA, AV BODY PORT 3/8 NPT, 1.17579 lb, ModelPort sizeProof pressureOperating pressure rangePressure gauge port sizeAmbient and fluid temperatureEffective area (mm2)Mass (kg)Electrical specificationsPilot valve manual override1(P) 2(A)2(A) 3(R)