Butterfly Valve Series

• Cast Iron Butterfly Valves
• Ductile Iron Butterfly Valves
• Stainless Steel Butterfly Valves
• Triple Offset Butterfly Valves
• AWWA C504 Butterfly Valves
• Large Diameter Butterfly Valves
• Sanitary Butterfly Valves
• Flanged Butterfly Valves
• Lug Butterfly Valves
• Wafer Butterfly Valves
• High Vacuum Butterfly Valves

Product drawing»

Structural drawing»

Worm Gear Metal Hard-sealed Wafer Butterfly Valve

product drawing

Technical performance

D373H worm gear metal hard-sealed wafer butterfly valve is generally applicable to water, steam, oil, air, gas and other different media. According to our long-term experience, the diameter above DN250mm should be installed gear transmission, which is easy for maintainer to open and close. The main features are: 1, suitable temperature -20 ~ +425 º C; 2, large work pressure, wear resistance, a long service life, and open and close easily; 3, D373 worm gear metal hard-sealed wafer double eccentric butterfly valve has good sealing performance, with self-centering effect, and the leakage is small. The butterfly valve manufactured by Shanghai Fengqi Industry development Co.,ltd has been working as a regulating media flow and hoist device in the pipeline of food, beverage, pharmaceutical, petrochemical, power plants, steel mills, industrial environmental water treatment, high-rise building to a variety of drainage pipes.

Dimensions & constructral diagram

The main external dimensions of D373H-10/16/25

Nominal diameter (DN)(mm)	main dimension			flange dimensions and bolt specifications
				1.0 MPa		1.6 MPa		2.5 MPa
	L	H	H1	D1	4-Ф-M	D1	4-Ф-M	D1	4-Ф-M
200	71	605	208	295	M20	295	M20	310	M24
250	76	680	243	350	M20	355	M24	370	M27
300	83	800	283	400	M20	410	M24	430	M27
350	92	835	310	460	M20	470	M24	490	M30
400	102	915	340	515	M24	525	M27	550	M33
450	114	960	380	565	M24	585	M27	600	M33
500	127	1020	410	620	M24	650	M30	660	M33
600	154	1225	470	725	M27	770	M33	770	M36
700	165	1355	550	840	M27	840	M33	875	M39
800	190	1470	640	950	M30	950	M36	990	M45
900	203	1545	710	1050	M30	1050	M36	1090	M45
1000	216	1795	770	1160	M33	1170	M39	1210	M52
1200	254	1965	890	1380	M36	1390	M45	1420	M52

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