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Flanged Concentric Rubber Lined Butterfly Valve With Pin

Flanged Concentric Rubber Lined Butterfly Valve With Pin

    The SV flanged concentric butterfly valve with different designs of double flanged, single flanged, U type flanged can be installed through counter-flanges.

    It features the shaft center line, the disc center line and the valve body center line in the same position.

    The SV flanged concentric butterfly valve is fully or partially rubber coated or fluorine lined to achieve bidirectional bubble tight seal with simple structure.

    It is classed as economical solution for both cutting off and throttling applications but not suitable for high pressure and high temperature service.

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  • Features
  • Specification

  • Center line structure, bidirectional seal and no installation direction requirement;
  • The SV flanged center line butterfly valve has double flanged, single flanged and U type flanged connections;
  • Upper and lower double half shafts, disc without pin, non-backed replaceable seat with good performance and longer service life;
  • One through shaft, disc with or without pin, backed seat or non-backed seat;
  • Square and short neck is easy for fixing nameplate and cost saving;
  • Simple structure, small volume, light in weight, small installation space, quick open or close, small operate torque, small fluid resistance, suitable for large size pipeline, excellent regulating performance, good seal performance;
  • Easy installation and maintenance;
  • The SV flanged concentric butterfly valve has good seal performance of vulcanized seat, boding firm, good elasticity and low torque;
  • Rubber coated disc and body are abrasion resistant;
  • Fluorine lined disc and body are corrosive resistant;
  • Aluminum bronze butterfly valve is suitable for sea water;
  • Extended bonnet or extended stem is available for underground installation;
  • Full PTFE coated for corrosive medium like hydrofluoric acid, phosphoric acid, alkali chlorine etc.

Double flanged fluorine lined center line butterfly valvesDouble flanged extended stem butterfly valvesDouble flanged center line ventilation butterfly valves

Product range:

  • Size: 2"56" (DN501400)
  • Pressure rating: PN10PN16
  • End connection: Double flanged, Mono flanged, U type Flanged
  • Body materials:  cast iron GG25, ductile iron GGG40, GGG50, stainless steel CF8, CF8M, Duplex 904L, Aluminum bronze C95800 etc.;
  • Disc materials: GGG40, GGG50, CF8, CF8M, 904L, Aluminum bronze etc.
  • Stem materials: stainless steel SS410, SS416, SS420, SS304, SS316 etc.
  • Seat materials: EPDM, NBR, WRAS-EPDM, VITON, Silicon, PTFE, Hyplon etc.
  • Operation: Bare stem, lever, gearbox and handwheel, electric, pneumatic.

Technical standards:

  • Design: API 609
  • Face to Face: API 609, EN558-1 20 Series, BS5155, DIN3202 K1
  • End flange standard: DIN PN10/PN16, ANSI 125#/150#, BS4504 PN10/ PN16, JIS B2220 10K
  • Top flange standard: ISO 5211
  • Test and inspection: API 598