DOUBLE FLANGE TYPE Butterfly Valve

CENTRIC DOUBLE FLANGE BODY BUTTERFLY VALVE FEATURES
  • STEM Precision double "D" disc to stem I connection drives the disc without the need for screws or pins. The close tolerance, double "D" connection that drives the valve disc is an exclusive feature of the OMVAL. Disassembly of the Pascal stem is just a matter of pulling the stem out of the disc.
  • STEM RETAINING : The stem is retained in the body by means of a unique stainless steel Spirolox retaining ring, manufactured from stainless steel as standard,
  • Top plate drilled to fit iso 5211 dimensions. All handles, gear operators and pneumatic actuators are designed to mount directly.
  • STEM BUSHING : An upper stem bushing, retained by a stainless steel ring, is provided to absorb actuator side thrusts and is PTFE as standard.
  • STEM SEAL: Double "U" cup seal design is self-adjusting and gives positive sealing in both directions. Keeps environmental contaminants from entering the stem bore.
  • BODY: One piece wafer or lug style allows for ease of assembly and maintenance.
  • SEAT: Pascal's Replaceable tongue and groove seat design provides complete isolation of flowin media from the body. The seat also features a moulded o-ring which eliminates the need of flan gaskets.
  • DISC/STEM: One piece design. The disc edge is spherically machined and hand polished to produce a bubble tight shut off, minimum torque, and longer seat life. For erosion and abrasion resistance.
Butterfly Valve
MATERIAL OF CONSTRUCTION:

BODY
Cast Iron, ASTM Al26 Class B IS 210 FG 260 Ductile Iron, ASTM A 395 (60-40-18) WCB (CS) ASTM A 216 Stainless Steel (CF8M/CF8) ASTM A 351M/351

DISC
Cast Iron, ASTM Al26 Class B IS 210 FG 260 Ductile Iron, ASTM A 395 (60-40-18) WCB (CS) ASTM A 216 Stainless Steel (CF8M/CF8) ASTM A 351M/351 Alluminium Bronze, Duplex , Super Duplex *DISC also available with Rubber Lining in EBBONITE/ EPDM/NBR/NYLON/HYPLON (with Gurranted Spark Test Pass)

SEAT
EPDM / White EPDM (FOOD GRADE) BUNA-N / White - BUNA N (Food Garde) (NITRILE - NBR) Viton, Hyplon, Butyle, Silicon, Neoprene, Natural Rubber

STEM
Stainless Steel ASTM A 479 TYPE 410 Stainless Steel ASTM A 276 TYPE 316 Stainless Steel ASTM A 276 TYPE 304 Duplex, Super Duplex, Monel, Bronze

STEM BUSHING : PTFE, ACETAL

OIL SEAL (Stem Seal) : EPDM

WASHER : SS304

RETAINING CIRCLIP : SPRING STEEL

Note: All Body and Disc are IC Cast from 1.5"(DN40) To 24" (DN600) Available. any other Special Material are also work on request for Body / Disc / Stem / Seat.
TECHNICAL SPECIFICATION:

Design & Manufacturing Standards
API 609 / BS EN - 593 / IS13095 / ASME B16.51S0 7005

Testing Standard
API 598 / API6D / BSEN 12266-1

Valve face to face Dimension
Category A API 609 / IS13095 / ENS93 / ISOS752Tab5

TOP Flange Drilling
ISO 5211

Flang Standard
DIN EN 1092-PN6, PN10, Class 150, Bs10 Tub DoE, 1S6392, Tab 11/17, JIS 5K/10K
DIMENSION SPECIFICATION
Torque Rating(NM) for Rubber Line Double Flange Butterfly Valve

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