
SMC IL20102 (IL201-02) - Lock-Up Valve, Single Acting Action, Rc 1/4 Port
SMC IL20102 Lock-Up Valve — single acting action (201) with Rc 1/4 ports. Signal pressure max. 1.0 MPa, Set pressure range 0.14 to 0.7 MPa, Shut-off circuit pressure max. 0.7 MPa, Differential 0.01 MPa, Weight 0.45 kg.
MPN: IL201-02 · SKU: IL20102
IL201-02 Applications
The SMC IL20102 is the single acting member of the IL201/211/220 lock-up valve family, holding pressure at one operating chamber rather than two (IL211) or switching supply ports (IL220). It is installed in air-operated process control lines to guard against air source or supply piping failure: if the signal pressure falls below the set point, the valve closes and retains pressure at the operating area as an emergency measure until the air source returns to normal. Typical uses are fail-freeze protection of single acting control valve actuators in refineries, chemical plants and power stations.
IL201-02 Specifications
| Brand | SMC | Manufacturer Part No. | IL201-02 |
| Product Type | Lock-Up Valve | Series | IL201/211/220 |
| Action | 201 - Single acting | Thread Type | Rc (nil) |
| Port Size | 1/4 (02) | Accessory | None |
| Suffix | Standard | Signal Pressure | Max. 1.0 MPa |
| Set Pressure Range | 0.14 to 0.7 MPa | Shut-off Pneumatic Circuit Pressure | Max. 0.7 MPa |
| Differential | 0.01 MPa | Ambient and Fluid Temperature | -5 to 60 C |
| Body Material | Aluminum alloy, silver baking finish | Weight | 0.45 kg |
IL201-02 Datasheet & Manual
Download Datasheet & ManualSMC IL20102 · PDF · Official SMC documentTrusted by




