Butterfly Valve can be used in bi-directional pressure differential to prevent backflow in systems designed for unidirectional flow. Wafer Bonded/Renewable Seat Butterfly Valve no requirement of any gasket to mount between two flanges.Butterfly Valves are available with wider range of Elastomer Rubber Seat to suit various industrial applications with various operations. Wafer Butterfly Valves are also called by Center Disc Butterfly Valve or Slim Seal Design Butterfly Valve. Wafer Type Butterfly Valve also can be used for Flow Control Application or Shut-off purpose.
We manufacture & export Butterfly Valve in size from 2" (50NB) to 24" (600NB) with various option body, disc & seat material. Butterfly valve body mostly used Cast Iron or Cast Steel because the same not comes direct in touch with flow media.Butterfly Valve design is as per BS 5155 & API 609 and Test Standard BS 6755-I & API 598.
A butterfly valve is a valve used for flow regulation in which the disc takes the form of disk. Operation is similar to that of a ball valve. A plate or disc is positioned in the center of the pipe. The disc has a rod passing through it that is connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.
Wafer Triple Offset Butterfly Valve
Specification
Structre type: Wafer type three eccenticity
Design standard: API609, MSS SP-68, EN 593
Flange dimension: ANSI B 16.5 etc
Face to Face: ANSI B 16.10, API 609
Pressure test: API 598-82
Size: 2"-120"
Application
Three eccentric configuration, hermetic capability reliably,which ensure disc never touch sealing seat when it start, solve the problem of hermetical seat burden unequally,prolong service life, and ensure reliable hermetic capability with advantage of high temperature resistant, wearable,antisepsis etc.
Lug Type Butterfly Valve
Specification
Design Standard: API 609; EN593
Face to Face: DIN3202-K1; EN558-1 20 Series; BS5155; MSS SP-67 ect.
Flange drilling: DIN2501 PN10/PN16; ANSI125/150; ASA125/150; AS2129 Table D/E; BS4504, JIS10K; BS10-D/E; etc.
Pressure test: API 598
Size: DN40-DN800
Application
This kind of butterfly valve is widely utilized in foodstuff,pharmacy,chemical industry etc.and industrial environmental protection, water treatment, high building,water supply and draian tubing line open or close or adjusting medium.
Lug Type Three Offset Butterfly Valve
Specification
Structre type: Lug Type Three Eccentric Butterfly valve
Design standard: API609, MSS SP-68, EN 593
Flange dimension: ANSI B 16.5 etc
Face to Face: ANSI B 16.10, API 609
Pressure test: API 598-82
Size: 2"-120"
Application
Three eccentric configuration, hermetic capability reliably,which ensure disc never touch sealing seat when it start, solve the problem of hermetical seat burden unequally,prolong service life, and ensure reliable hermetic capability with advantage of high temperature resistant, wearable,antisepsis etc.
Materials
Body
WCB, LCB, CF8, CF3, CF8M, CF3M, Duplex Steel etc
Disc
WCB, LCB, Al-bronze, CF8, CF3, CF8M, CF3M, Duplex Steel etc
Stem
416, 316, 2Cr13, 1Cr18Ni9Ti, Monel
Seal ring
316+graphite, Fluorine plastic (PTFE)
Packing
Flesxible graphite, fluorine plastic
Concentric Double Flanged (U type) Butterfly Valve
Specification
Structre type: Double concentric flanged (U type) butterfly valve
Design standard: BS 5155
Flange connection dimension: DIN 2501 PN10
Face to Face: DIN3202 K1
Structure length: BS 5155, API 609, EN 558
Pressure test: API 598
Application
This kind of butterfly valve is widely utilized in foodstuff, pharmacy, chemical industry and industrial environmental protection, water treatment, high building, water supply and drainage tubing line open/close or adjusting medium.
Rubber Lined Butterfly Valve
Rubber Lined Butterfly Valve Features:
DN50-DN4500, PN6/10/16
Flange Dimension DIN2501/ANSI B 16.5/ANSI B 16.47/JIS/IS
Design - BS 5155 or API609
Final inspection tests to BS 6755 / API598
Operation : Flow Control Lever / Gear / Actuator
Materials:
Body and disc: Cast iron, ductile iron GGG40 / GGG50 / WCB / SS
Disc Seat NBR/EPDM/Neoprene/Silicon/Viton/EPDM/Nitrile Rubber.
Shafts of Stainless Steel 410/304/316/304L/316L
PTFE Lined Butterfly Valve
Specification
Design standard: API609
Flange connection dimension: DIN 2501 PN10; ANSI125/150; AS2129 Table D/E,ect.
Face to Face: DIN3202-K1, BS5155, ANSI B16.10, MSS SP-67
Pressure test: API 598
Size: 2"-12"
Application
This butterfly valve is separated style, enclosed the valve with the PTFE liner ring, Between the liner ring and valve is the back liner of 79 that made of high-elasticity rubber, the liner ring disc adopts the double spherical surface sealing structure, used for guarantee the reliable closing and sealing performance even some laceration emerges due to long-time using.
The valve disc is the complete liner structure, and they adopt the spherical surface structure to the liner ring , the sealing structure between the valve disc , valve stem and liner ring ,is the highly reliable pressure self-sealing structure, which had got a patent items to guarantee that there will no leaking out during long-term use.
Wafer Butterfly Valve
Specification
Design standard: API609; EN593,ect
Face to Face: DIN3202-K1, EN558-1 20 Series; BS5155, MSS SP-67
Flange Drilling: DIN2501PN10/PN16; BS10-D; JIS10K; BS4504; ANSI125/150; AS2129 Table D/E; ASA125/150 ect.
Pressure test: API 598
Size: 2"-12"
Application
This kind of butterfly valve is widely utilized in foodstuff,pharmacy,chemical industry etc.and industrial environmental protection, water treatment, high building, water supply and draian tubing line open or close or adjusting medium.
AWWA C504 Butterfly Valve,Rubber Seated
Sizes: 3"through 72"
Styles : Double Flanged
Bodies : Cast Iron, Ductile Iron, Built in Conformance to AWWA C-504-2000 Specifications
Body Coating : Two Part Polyester Epoxy
Discs : Epoxy Coated Ductile Iron with 304SS or 316SS Disc Edge, Aluminum Bronze, All 304SS or 316SS, Coatings per NSF C 61 Standards
Seats : EPDM , Buna N, Viton, Hypalon, Silicone, Neoprene, One-Piece Fusion Bonded Covering the Interior Body
Stems : 304SS, 316SS
Stem Retention : Tapered Bolt(s) with Locking Nut
Bearings : Bronze 2 C Top and 1 C Bottom
Working Pressures : 150 psig, 250 psig, BiC Directional Shutoff
Design Parameters
1. Design Standard: GB12238; AWWA C504
2. Body Flange Drilling: DIN 2501; ANSI 125/150; BS 4504; GB 17241.6
3. Face to Face: ISO 5752; AWWA C504; GB12221
4. Test Inspection standard: API 598; GB13927
Product Features
1. Two way sealing performance are good. Minimized torque, parts producing performance is excellent.
2. Flow curve tending to straight line. Excellent regulation performance.
3. Flanged assembling is convenient, stand and lie assembling is ok.
4. Material of sealing pair is various, clients can select according to demand.
5. Valve can be used in pipe-end evacuation performance reliability.
6. Seat sealing ring and body are connected to one-piece, so the valve has longer working life.
7. Strong wash and brush resistance,fit to bad working condition and environment.Can be used in cutting off and regulating medium.upply and draian tubing line open or close or adjusting medium.
