Hard seal flanged butterfly valve

GENERAL USES:
This product is used for the water supply and drainage system in tap water,sewage,building,chemical etc.industries,usually used as an open-close equipment.

STRUCTURE:
Concentric structure,strictly sealing,long durable

Performance parameters
DN:DN50~2000mm
PN:PN1.0Mpa,PN1.6Mpa,150LB 
Strength test:1.5Mpa.2.4Mpa
Sealing test:1.1Mpa,1.76Mpa
Suitable temperature:≤120oC
Suitable media:water,low temperature steam,oil goods,coal gas,seawater,sewage ect.

Executive standard
Design and manufacture standard:GB/T12238-2008,API 609
Flange connection dimension:GB/T 9113.1,GB/T 17241.6,ANSI B16.5
Structural length:GB/T 12221
Pressure test:GB/T13972,API 598

Main part materials
Body-Ductile iron/Cast steel
Valve disc-Ductile iron/Cast steel/Stainless steel
Valve stem-stainless steel
Seal ring -NBR/EPDM/Fluorine rubber
Packing-Flexible graphite/V-type rubber pad

Features

1. Butterfly plate ring for soft and hard metal sheets stacked with metal hard sealing and sealing of the dual advantage of flexibility in terms of low temperature and high-temperature circumstance,have excellent sealing performance.
2. Using three-dimensional eccentric structure,butterfly valve base plate with almost no friction,with more clearance seal function is tightening.
3. Valve body sealing surface,the use of welding stainless steel,cobalt-based alloy,sealing surface wear-resistance,long service life.
4. Unique structure,operation flexibility,labor-saving,convenient and free from the pressure ring high-and low-impact,reliable sealing performance.

Normal Temperature(-40°C<T<120°C)