FEATURES

  • ISO 5211 top plate for direct mounting of a wide range of actuators, handles, and gears
  • High strength disc with polished edge and hubs
  • Upper and lower stem with Square or double-D drive eliminates the need for disc screws or taper pins
  • Double molded O-rings provide upper and lower secondary seals
  • “Bear-G” bearings on drive and non-drive end stem reduce friction and isolate stem from valve body
  • Bi-directional U-cup stem seal
DelVal Flow Controls Resilient Seated Butterfly Valves

Series 58

Resilient Seated for Higher Pressure

Full Specification

Product Series
58
Size range
2" to 48" (DN 50 to 1200)
Pressure Rating
2" to 24" - 285 PSIG (PN 20), 26" to 48" - 230 PSIG (PN 16)
Design Standards
API 609, BS EN 593
Testing Standard
API 598, BS EN 12266-1
Body Style
Series 58 – Double Flanged
Body Material
(CI/DI/CS - CI ASTM A126 Class B, DI ASTM A395 60-40-18, ASTM A216 WCВ), (SS - ASTM A351 CF8M/CF3M)
Disc Material
Nylon coated Ductile Iron, Aroxy Ductile Iron, CF8M, NAB
Stem Material
410 SS, 17-4 PH, 316 SS
Seat Material
EPDM, Buna-N, FKM
Seal Material
NBR (BUNA-N)

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