Rubber seat butterfly valve.

Main features
Without pin design: Double D transmission between disc and shaft is strong and reliable.
Stainless steel retainer preventing stem blow-out.
Hard back ring keeping the rubber from seat distortion.
Multi-standard alignment holes suitable for various standard of flanges.

Sizes / Pressure Classes
Vacuum 0.001 bar absolute
16 bar for DN40-DN200
10 bar for DN250-DN2000

Design Codes & Product Standards
Flange: EN1092 PN6, PN10, PN16. ASME B16.5 CLASS150.JIS B 2239 10K, 16K. BS10 Table D, Table E
Face to Face: EN558 Series 20, API 609 Table 1
Tightness test: ISO 5208 Rate A, API 598 Table 5 (medium: water)
Disc: Ductile iron,SS201, SS304, SS316, SS316L, C95800, C95400,Hastelloy C, EN 1.4410, EN 1.4529
Seat: NBR, EPDM-H, VITON-A (oil, acid and alkali resistant), VITON-B (steam resistant)

Hand lever, gear box, pneumatic actuator, electric actuator

Contact us