DelVal Series 50/52
Resilient Seated Butterfly Valves
| Body Style | Series 50 – Wafer
Series 52 – Lug Series 5A – Wafer (Alternate stem size) Series 5B – Lug (Alternate stem size) |
| Body | CI, DI, CS |
| Disc | Nylon coated Ductile Iron
Aroxy Ductile Iron CF8M |
| Stem | 410 SS, 17-4 PH |
| Seat | EPDM, White EPDM
Buna-N, White Buna-N FKM, Silicone |
| Size Range | 2″ to 24“ (DN 50 to 600) |
| Pressure Rating | 2″ to 12″ – Class 125, 175 PSIG (PN 12)
14” to 24” – 150 psi (PN 10) Optional: 2” to 24” – 230 (PN 16) |
| Design Standard | API 609, BS EN 593 |
| Testing Standard | API 598, BS EN 12266-1 |
FEATURES
- Top plate double drilled to ISO 5211 and standard secondary bolt circle dimensions designed for directing mounting of a wide range of actuators, handles, and gears
- Heavy duty acetal bushing
- High strength disc with hand polished disc edge and hubs
- One piece stem with internal Double D drive eliminates disc pins and screws
- Blowout proof stem retention offers easy assembly and disassembly
- Bi-directional U-cup stem seal
- Heavy duty, one piece epoxy coated body with extended neck for 2” of insulation and locating holes
- Center-LOK® peroxide cured seat
- Double molded O-rings provide upper and lower secondary seals
