Worm Gear Transmission Butterfly Valve

Worm Gear Transmission Butterfly Valve:

1. Valve body material is QT400-15, ZG230-450, SUS304.

2. Valve Cover is HT250.

3. Valve Board is ZQAI9-2, SUS304.

4. Valve Seat Cycle is NBR Rubber, Fluorine Rubber.

5. Valve Pipe is ICr17Ni2, ICr13.

6. for gasoline or 70 degree to 170 degree other media, the valves seat cycle select fluorine rubber.

7. The valve apply to 1.0 Mpa pressure.

8. Media for valves: sea water, pure water, air, 1 ≤ 70℃ crude oil or refined oil.

Specification

Remark: The valves widely use for marine.

NP	ND	Structure Size and Flange Size																	Screw Hole
Mpa	DN/mm	ISO&JIS				ISO				JIS				GB				ISO			JIS			GB
H	H1	D4	L1		L	D	D1		L	D	D1		L	D	D1		n	Th	n	Th	n		Th
1.0	80	160	116	130	100		64	200	160		64	185	150		64	170	138		8	M16	8	M16	8		M14
	100	178	130	130	100		64	220	180		65	210	175		64	190	158		8	M16	8	M16	8		M14
	125	198	150	130	100		70	250	210		70	250	210		70	215	193		8	M16	8	M20	10		M14
	150	232	167	160	120		76	285	240		90	280	240		76	240	208		8	M20	8	M20	12		M14
	200	254	192	160	120		89	340	295		100	330	290		89	310	273		8	M20	12	M20	12		M16
	250	296	220	200	160		114	395	350		110	400	355		114	435	391		12	M20	12	M22	14		M20
	300	330	272	200	160		114	445	400		110	445	445		127	485	441		12	M20	16	M22	16		M20
	350	367	250	250	185		127	505	460		120	490	510		140	545	496		16	M20	16	M22	18		M20