Butt-Weld Butterfly Valve

Size Range: NPS 3"~NPS 80" (DN80~DN2000）
Rating: Class 150~Class300 (PN10~PN40)
Body Material: Carbon Steel, Stainless Steel, Alloy Steel, Duplex stainless steel etc.
Disc Sealing: Metal to metal, Graphite Laminated, PTFE
Design Standard: API609, MSS SP-68, EN593, EN12569, GOST, JIS, GB
Face to Face Standards: ANSI B16.10, DIN3202 F4, EN558-1 Series 13 & 14
End Connection: BW
Operation: Handwheel, Worm Gear, Electric, Pneumatic
Suitable Medium: Water, Oil, Gas, Steam

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zgkk@zgkkv.com

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Details

Our products now cover a wide range of standardized fluid control products that can be adapted to a variety of drive modes, comprising ball valves, butterfly valves, gate valves, globe valves, check valves, safety valves, rotary ball valves, plunger valves etc. Our products are widely used in water conservancy, municipal, electric power, gas, petrochemical, coal chemical, energy, environmental protection, medicine, real estate, metallurgy, mining and many other fields.

Design Features of Butt-Weld Butterfly Valve

Triple Offset Structure
Triple offset design eliminates seal friction across full stroke, disc separates from seat instantly when opening.
All-Metal Sealing Performance
All-metal conical sealing achieves bi-directional Class VI tight shut-off; hard-faced seats deliver excellent heat and wear resistance.
Integral Welded Ends
Integral butt-weld ends ensure pipe joint integrity, ideal for high pressure & high temperature service.
Compact & Lightweight
Compact structure, lighter weight than traditional linear valves, easy for installation.
Low Torque & High Safety
Low operating torque, compatible with standard actuators; blowout-proof stem for enhanced safety.
Durable & Maintainable
Robust one-piece body, easy on-site maintenance and long service life.

Drawings and Main Dimensions

Dimensions
DN (mm)	L	1.0MPa		1.6MPa		2.5MPa		4.0MPa
DN (mm)	L	H1	H	H1	H	H1	H	H1	H
100	190	280	390	280	390	280	390	280	390
125	200	300	420	300	420	300	420	300	420
150	210	320	460	320	460	320	460	320	460
200	230	370	550	370	550	370	550	370	550
250	250	420	620	420	620	420	620	420	620
300	270	500	750	500	750	500	750	500	750
350	290	530	800	530	800	530	800	530	800
400	310	570	870	570	870	570	870	570	870
450	330	600	920	600	920	600	920	600	920
500	350	680	1040	680	1040	680	1040	680	1040
600	390	750	1190	750	1190	750	1190	750	1190
700	430	810	1290	810	1290	810	1290	/	/
800	470	905	1440	905	1440	905	1440	/	/
900	510	960	1550	960	1550	960	1550	/	/
1000	550	1010	1650	1010	1650	1010	1650	/	/
1200	630	1175	1920	1175	1920	1175	1920	/	/
1400	710	1310	2170	1310	2170	/	/	/	/
1600	790	1460	2440	1460	2440	/	/	/	/
1800	870	1560	2650	1560	2650	/	/	/	/
2000	950	1670	2860	1670	2860	/	/	/	/