API 609 Butterfly Valves

API 609 Butterfly Valves

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Size: 2"-60"
Pressure: 150LB-2500LB
Body Material: WCB, WC6, WC9, CF8, CF8M, CF3, CF3M, CN7M, LC1, LC2, LC3, LCB, LCC, Monel, 20# Alloys, 4A, 5A, C95800, C95500, A105, F304, F304L, F316, F316L, LF1, LF2, LF3, LF9, F51, F53, F11, F22, etc.
Seal Material: PTFE, NBR, METAL SEAT
Connection Type: Flanged, Wafer, Lug
Operation: Gear operated, pneumatic, motorized
Face to Face Dimension: ASME B16.10
Flange End Dimension: ASME B16.5
Butt Welded Dimension: ASME B16.25
Design and Manufacture: API 609
Test Standard: API 598, API 607, API 6FA, ISO 15848-1-2

API 609 Category A butterfly valve, usually with a concentric disc and seat configuration.

API 609 Category B butterfly valve are available in offset seat, an eccentric and concentric disc configuration.

Sizes covered are NPS 2 to NPS 60 for valves having ASME class 125 or class 150 flange bolting patterns.

Applicable with soft seal and hard seal; suitable for various media and working conditions.

Valve configurations include double-flanged, lug and wafer type with facings that permit installation between ASME and MSS flanges and butt-welding ends.

Hard sealed butterfly valves meet fire protection requirements and apply API 607 fire safe standards.


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