Butterfly valve 8532

pneumaticelectrichydraulically-operated

The Fisher 8532 high performance Butterfly valve offers outstanding performance under extreme pressure and temperature conditions. The 8532 valve maintains tight shutoff, is available in a fire-tested construction, and can be specified for cryogenic applications. Available as either a flangeless (wafer style) design, single flange (lugged), or Double Flanged design. Certifications SIL capable, PED, CRN, Fugitive Emission, NACE, ATEX, CUTR, Fire Safe Critical Service General Service Flow Characteristics Linear Operating Temperature Standard Temperature, High Temperature, Cryogenic Pressure Class ASME Shutoff Class MSS SP-61, Class IV (FCI 70-2), Class VI (FCI 70-2), Flow Ring Standards B16.34 Features The pressure-assisted seal design provides tight shutoff against the full pressure rating of the specified valve. The anti-blowout gland fits securely over the valve shaft, which has been turned down to form a circumferential shoulder that contacts the anti-blowout gland. A splined end connection on the drive shaft allows lever clamping by most Fisher rotary actuators. Optional keyed shaft is ideal for on/off applications and allows actuator selection flexibility. The optional ENVIRO-SEAL™ packing system is designed with very smooth stem surfaces and live-loading provides improved sealing, guiding, and loading force transmission. The valve body self-centers on the line flange bolts as a fast, accurate means of centering the valve in the pipeline. Seal retainer screws are located so there is no interference with the sealing function of either flat sheet or spiral-wound line flange gaskets.