A U-Flange Centric Butterfly Valve is a type of butterfly valve featuring a U-shaped flange design for easy and secure installation between pipe flanges. It operates with a disc mounted on a central shaft (concentric design), which rotates 90 degrees to control fluid flow. This valve is commonly used in low-to-medium pressure applications for on/off or throttling service in water, HVAC, chemical, and general industrial systems. The centric configuration ensures simple construction, cost-effectiveness, and reliable sealing, while the U-flange allows for quick alignment and bolting during maintenance or installation.
Technical Attributes
1,Design Standard,API 609 / EN 593 / MSS SP-67
2,Body Style,U-Section Flanged (U-Flange)
3,Seating Design,Centric (Concentric) / Symmetrical Disc
4,Face-to-Face,EN 558 Series 20 / ISO 5752 / API 609
5,Pressure Rating,PN10 / PN16 / Class 150
6,Size Range,DN50 to DN1200+
7,Dead-End Service,Suitable (Can be installed at pipe ends)
8,Body Material,Ductile Iron GGG40 / GGG50
9,Disc Material,SS304 / SS316 / Al-Bronze / Nylon Coated DI
10,Seat (Liner) Type,Resilient Soft Seat (Replaceable or Bonded)
11,Seat Material,EPDM / NBR / Viton (FKM) / PTFE
12,Stem Material,Stainless Steel AISI 410 / 416 / 420
13,Stem Design,Through-shaft or Stub-shaft (Anti-blowout)
14,Shaft Sealing,Double O-ring or V-type packing
15,Tightness Class,Class VI (Bubble-tight / Zero leakage)
16,Flange Drilling,Multi-standard (PN10/PN16/CL150 compatible)
17,Operation,Lever / Worm Gear / Electric / Pneumatic
18,Coating,"Fusion Bonded Epoxy (FBE), Min. 250 microns"
19,Top Flange Mounting,ISO 5211 (Standardized for actuators)
20,Working Temp,−15°C to +120°C (Varies by seat material)
21,Testing Standard,API 598 / EN 12266-1
Contact: Jorge Yang
Phone: +86-13588258503
E-mail: sales@fluvalve.com
Whatsapp:+86-13588258503
Add: Room 331, South Building,Building 1, No.3 Jinpeng Street, Sandun Town, Xihu District, Hangzhou City, Zhejiang Province
