FEATURES
- ISO 5211 top plate for direct mounting of a wide range of actuators, handles, and gears
- Heavy duty bronze sleeve bearing reduces friction and torque
- High strength disc with hand polished disc edge and hubs
- Thick bronze bushing absorbs actuator side thrusts
- Bronze vertical thrust bearing eliminates disc displacement due to weight of stem and disc
- Blowout proof stem retention offers easy assembly and disassembly
- Bi-directional U-cup stem seal
- Heavy duty, one-piece epoxy coated body
- Center-LOK® peroxide cured seat
- Double molded O-rings provide upper and lower secondary seals
Resilient Seated Butterfly Valves
Series 51/53
Large Diameter Resilient Seated
Full Specification
- Product Series
- 51/53
- Size range
- 26" to 40“ (DN 650 to 1000)
- Pressure Rating
- 150 PSIG (PN 10)
- Design Standards
- API 609, BS EN 593
- Testing Standard
- API 598, BS EN 12266-1
- Body Style
- Series 51 – Wafer, Series 53 – U Section Wafer (lugs drilled not tapped)
- Body Material
- (CI/DI/CS - CI ASTM A126 CLASS B, CI IS 210 FG 260, DI ASTM A395 60-40-18, ASTM A216 WCВ), (SS - ASTM A351, CF8/CF8M/CF3M)
- Disc Material
- Nylon Ductile Iron (NDI), Aroxy Ductile Iron (ADI), CF8M
- Stem Material
- 410 SS, 316 SS, CS BS 970
- Seat Material
- EPDM, Buna-N, FKM, Silicone
- Seal Material
- NBR (BUNA-N)
Other Series in This Family
Solutions that scale with plants across applications, industries, and geographies.
Explore Other Valve Types
Solutions that scale with plants across applications, industries, and geographies.
