Check valves are valves that can control flow direction. In tire-curing presses they are mainly used to prevent backward flows.
Specification
| Fluid | Steam, Gas, Hot Water, Cold Water |
|---|---|
| Maximum Operating Pressure |
3.2 MPa (460 psi) |
| Maximum Allowable Temperature |
205℃ (401℉) |
| Cracking Pressure | 0.01 MPa (1.5 psi) |
| End Connection | Thread (Rc, NPT) |
| Flange (JIS 20K RF, ASME Class 300, DIN PN40) |
Outside
| End Connection | |
|---|---|
| Thread | Flange |
 YL1211-□□ |
 YL1212-□□ |
Order Code
| Symbol | Meaning of Symbol | Meaning of number and alphabetical character |
Remarks | |
|---|---|---|---|---|
| N1 | Model Series | 1 | First Generation | |
| N2 | Number of Ports | 2 | 2-Ports | |
| N3 | Function | 1 | Normally Closed | |
| N4 | End Connection | 1 | Thread | |
| 2 | Flange | |||
| N5 | Port Size | 15 | 1/2" | |
| 20 | 3/4" | |||
| 25 | 1" | |||
| 32 | 1-1/4" | |||
| 40 | 1-1/2" | |||
| N6 | End Connection | J | JIS 20K RF | Indicates body port flange. Please leave blank where flanges are not used. |
| A | ASME Class 300 | |||
| D | DIN PN40 | |||
| P | Rc | Indicates the thread for body ports Please leave blank where screws are not used. |
||
| N | NPT | |||
| N7 | Material of Flange | Nil | Material of Flange: S25C | Flange material is S25C |
| Y | Material of Flange: SUS304 | Flange material is SUS304 | ||
| N8 | Special Options | Z□□ | Other Special Options | Indicates fixed number (Z01~) corresponding to each special option. |