Model: PD-11/PD-31/PD-51
A valve with a PFA-lined body and a PTFE diaphragm. PD-11, PD-31 and PD-51 have different connection standards and body materials. Maximum working pressure depends on size.


| Size (PD-11) | 1/2″~4″ |
| Pressure rating (PD-11) | CLASS 150 LB |
| Body design (PD-11) | ASME B16.34 |
| Connection standard (PD-11) | ASME B16.5 CLASS 150 RF flange |
| Face-to-face standard (PD-11) | MSS SP-88 |
| Body material (PD-11) | A351 CF8 + PFA lining |
| Bonnet and handle material (PD-11) | ASTM A351 CF8 |
| Maximum working pressure (PD-11) | 1/2″~1″: 14 kgf/cm² (200 psi); 1-1/2″~2″: 12.3 kgf/cm² (175 psi); 2-1/2″~4″: 10.5 kgf/cm² (150 psi) |
| Size (PD-31) | DN15~DN100 |
| Pressure rating (PD-31) | PN16 |
| Body design (PD-31) | EN12516 |
| Connection standard (PD-31) | EN 1092-1 |
| Face-to-face standard (PD-31) | EN-588-1 (as printed in the catalog) |
| Body material (PD-31) | 1.4308 + PFA lining |
| Bonnet and handle material (PD-31) | 1.4308 |
| Maximum working pressure (PD-31) | DN15~DN25: 14 kgf/cm² (200 psi); DN40~DN50: 12.3 kgf/cm² (175 psi); DN65~DN100: 10.5 kgf/cm² (150 psi) |
| Size (PD-51) | 15A~100A |
| Pressure rating (PD-51) | JIS 10K |
| Body design (PD-51) | ASME B16.34 |
| Connection standard (PD-51) | JIS B2220 10K RF |
| Face-to-face standard (PD-51) | ISO 5752; BS-5156 |
| Body material (PD-51) | SCS13A + PFA lining |
| Bonnet and handle material (PD-51) | SCS13A |
| Maximum working pressure (PD-51) | 15A~25A: 14 kgf/cm² (200 psi); 40A~50A: 12.3 kgf/cm² (175 psi); 65A~100A: 10.5 kgf/cm² (150 psi) |
| Operating temperature (PD-11/PD-31/PD-51) | -30°C~+120°C |
| Stem material (PD-11/PD-31/PD-51) | SS304 |
| Diaphragm material (PD-11/PD-31/PD-51) | PTFE |