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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.
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Flanged Triple Eccentric Butterfly Valve

Size: 2" ~ 42"
Pressure: ANSI Class 150 ~ Class 300
Triple eccentric type, metal multi-layer sealing

Lug Type Triple Offset Butterfly Valve
Size :  2"-36"
Pressure: ANSI Class 150 - Class 300
Structure length: ANSI B 16.10-1992
Flange dimension: ANSI B 16.5
 
Butterfly Valve,Wafer Triple Offset
Size:  2"-36"
Pressure: ANSI 150lb - 300lb
Structre type: Wafer type three eccentric
Flange dimension: ANSI B 16.5
High Performance Butterfly Valve
Size: 2"-12"
Structre type: Double eccentric
Flange connection dimension: ANSI 125/150
Structure length: BS5155, API 609
DIN3202-F4 Flanged Double-eccentric Butterfly Valve

Size: DN100 ~ DN2000
Double-eccentric Butterfly Valve
Flange connection dimension: DIN2533 PN16, BS 4504 PN16
Structure length: DIN 3202 F4; BS 5155 long type.

BS 5155(Short Size)Flanged Double-eccentric Butterfly Valve
Size: DN100 ~ DN2000
Double-eccentric Butterfly Valve
Flange connection dimension: BS 4504 PN16,DIN 2533 PN16
Structure length: BS 5155-short size
DIN3202-K3 Flanged Double-eccentric Butterfly Valve
Size: DN100 ~ DN2000
Double-eccentric Butterfly Valve
Flange connection dimension: DIN 2533 PN16, BS 4504 PN16
Structure length: DIN3202 K3
Lug Type Butterfly Valve
Size:  DN40-DN800
Face to Face: DIN3202-K1;EN558-1 20 Series;BS5155;MSS SP-67 etc.
Flange drilling: DIN2501 PN10/PN16; ANSI125/150; ASA125/150; AS2129 Table D/E; BS4504, JIS10K; BS10-D/E etc.
Wafer Type Butterfly Valve
Size:  2"-12"
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 etc.
 
Concentric Double Flanged (U type) Butterfly Valve
Size: DN700 ~ DN1200
Double concentric flanged (U type) butterfly valve
Flange connection dimension: DIN 2501 PN10
Face to Face: DIN3202 K1
PTFE Lined Butterfly Valve
Size: 2"-12"
Face to Face: DIN3202-K1, BS5155, ANSI B16.10, MSS SP-67
flange connection dimension: DIN 2501 PN10; ANSI125/150; AS2129 Table D/E, etc. 
Pressure test:  API 598
 
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