D341X Worm Gear Flanged Butterfly Valve
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Butterfly Valves
SD343X SD943X SD643 Telescopic Flanged Butterfly Valve
Telescopic flanged butterfly valve for installation-length adjustment, isolation and regulation. Gear, electric or pneumatic actuation; DN50-DN1200, PN10-PN16.
Price
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Specifications
Models
SD343X, SD943X and SD643
Valve type
Telescopic flanged resilient-seated butterfly valve
Nominal diameter
DN50-DN1200
Nominal pressure
PN10-PN16
Shell test pressure
1.5-2.4 MPa
Seat test pressure
1.1-1.76 MPa
Working temperature
Up to 100 C
Applicable media
Water, steam and oil products
Body and disc options
Cast iron, ductile iron, cast steel or stainless steel
Stem options
Carbon steel or stainless steel
Seat and O-ring options
NBR, FPM or EPDM
Actuation
Worm gear, electric or pneumatic
Function
Installation-length adjustment, isolation and regulation
Product Overview
The HSVA telescopic flanged butterfly valve combines a resilient-seated butterfly valve with an adjustable installation length to help match new or existing piping. Model SD343X uses gear operation, SD943X uses electric actuation and SD643 uses pneumatic actuation. The disc turns through 90 degrees for quick shutoff and flexible regulation, with low flow resistance.
Catalogue applications include water supply and drainage, high-rise buildings, fire protection, petroleum, chemical, pharmaceutical and food pipelines. Body and disc options include cast iron, ductile iron, cast steel and stainless steel; resilient sealing options include NBR, FPM and EPDM. For project selection, provide DN, PN, medium, temperature, required adjustment range, flange standard, materials, actuator details, quantity and document requirements.
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