3/2-way solenoid valve, normally open (NO), G 1/8, 590 l/min, 24 V AC, standard connector - YPC SF2701

The SF2701 works the other way round from a normally closed valve. In its home position it is open and supplies the consumer with compressed air. When the solenoid is energised, it blocks the pressure port and vents the working line. At 5 bar up to 590 l/min pass through the G 1/8 ports. The 24 V AC coil is meant for control circuits fed with alternating voltage from a safety transformer.

Advantages

• De-energised, the passage is open, so the consumer stays supplied with pressure on power loss.
• Oil-free operation, no lubrication required. If the air is oiled, use ISO VG32.
• Coil without polarity, insulation class F, removable, drawing 4.5 VA at 24 V AC.
• Switching time of 25 ms max. at 5 bar and up to 5 Hz switching frequency for short machine cycles.

Applications

• Clamping units that stay closed at rest and open only to change the workpiece.
• Spring-applied brakes and holding cylinders that are vented only briefly to release.
• Older control systems with 24 V AC, where a valve of the same design is being replaced.

Accessories and spare parts

The replacement solenoid coil, type L for 24 V AC, is available separately and can be changed without opening the pneumatic circuit. A matching manifold is available for 3-way valves of the SF2000 series.