| Mfr. Part No. | Description |
| U31-39-21-12 | Pipe Size:1/8”;Orifice mm;1.2; Cr:0.05; Normally Closed |
| U31-31-21-12 | Pipe Size:1/8”;Orifice mm;1.6; Cr:0.13; Normally Closed |
| U31-32-21-12 | Pipe Size:1/8”;Orifice mm;2.4; Cr:0.24; Normally Closed |
| U31-33-21-12 | Pipe Size:1/8”;Orifice mm;3.0; Cr:0.35; Normally Closed |
| U31-41-21-12 | Pipe Size:1/4”;Orifice mm;1.6; Cr:0.13; Normally Closed |
| U31-42-21-12 | Pipe Size:1/4”;Orifice mm;2.4; Cr:0.24; Normally Closed |
| U31-43-21-12 | Pipe Size:1/4”;Orifice mm;3.0; Cr:0.35; Normally Closed |
| U32-31-21-12 | Pipe Size:1/8”;Orifice mm;1.6; Cr:0.10; Normally Open |
| U32-32-21-12 | Pipe Size:1/8”;Orifice mm;1.6; Cr:0.13; Normally Open |
| U32-33-21-12 | Pipe Size:1/8”;Orifice mm;2.4; Cr:0.24; Normally Open |
| U32-41-21-12 | Pipe Size:1/8”;Orifice mm;3.0; Cr:0.35; Normally Open |
| U32-42-21-12 | Pipe Size:1/4”;Orifice mm;1.6; Cr:0.13; Normally Open |
| U32-43-21-12 | Pipe Size:1/4”;Orifice mm;2.4; Cr:0.24; Normally Open |
| U33-31-21-12 | Pipe Size:1/4”;Orifice mm;3.0; Cr:0.35; Universal |
| U33-32-21-12 | Pipe Size:1/8”;Orifice mm;1.6; Cr:0.10; Universal |
| U33-33-21-12 | Pipe Size:1/8”;Orifice mm;1.6; Cr:0.13; Universal |
| U33-41-21-12 | Pipe Size:1/8”;Orifice mm;2.4; Cr:0.24; Universal |
| U33-42-21-12 | Pipe Size:1/8”;Orifice mm;3.0; Cr:0.35; Universal |
| U33-43-21-12 | Pipe Size:1/4”;Orifice mm;1.6; Cr:0.13; Universal |