Marine Center Worm Manual Wafer Butterfly Valve

Marine Center Worm Manual Wafer Butterfly Valve:

China Marine Center Worm Manual Wafer Butterfly Valve:

Marine Center Worm Manual Butterfly valve is operated by worm gear, used to adjust the flow rate, open and close the pipe system in the marine pipe system. The connection type also can be Lug type or Flange type.

Technical Specification:

Design Standard: GB/T3036-1994 Type C/CS

Test Standard: GB600

Applicable Medium: sea water, fresh water, air, crude/refined oil (t≤70℃)

Main Material:

1-Body: Cast Iron, Ductile Iron, Cast Steel, Bronze, Aluminum Alloy

2-Disc: WCB with galv, Stainless Steel, Bronze

3-Pin: Stainless Steel

4-Seat: NBR, EPDM,CR,FPM,VITION,PTFE

5-Stem: Stainless Steel

Main Size:

Nominal Pressure Mpa	Norminal diameter	Structure& Flange Dimension																Hole of Nut
		ISO、JIS、GB				ISO(GB2501-89)				JIS				GB(GB569-65)				ISO		JIS		GB
		H	H1	L1	D0	L	D	D1	D2	L	D	D1	D2	L	D	D1	D2	n	Th.	n	Th.	n	Th.
1.0	50	280	90	160	140	43	165	125	102	40	155	120	88	43	135	103	84	4	18	4	19	6	16
	65	295	100	160	140	46	185	145	122	40	175	140	112	46	155	123	104	4	18	4	19	6	16
	80	340	130	160	140	46	200	160	133	60	185	150	125	46	170	138	118	8	18	8	19	8	16
	100	360	135	160	140	52	220	180	158	60	210	175	144	52	190	158	138	8	M16	8	M16	8	M14
	125	395	155	160	140	56	250	210	184	60	250	210	178	56	215	183	164	8	M16	8	M20	10	M14
	150	430	170	190	220	56	285	240	212	70	280	240	207	56	240	208	190	8	M20	8	M20	12	M14
	200	480	190	190	220	60	340	295	268	80	330	290	260	60	310	273	250	8	M20	12	M20	12	M16
	250	550	225	225	300	68	395	350	320	90	400	355	316	68	380	336	310	12	M20	12	M22	14	M20
	300	630	260	225	300	78	445	400	370	90	445	400	361	78	435	391	364	12	M20	16	M22	16	M20
	350	680	270	225	380	78	505	460	430	100	490	445	404	78	485	441	414	16	M20	16	M22	18	M20
	400	795	315	265	380	102	565	515	482	110	560	510	462	102	545	496	466	16	M24	16	M24	18	M24
	450	860	340	265	380	114	615	565	532	130	620	565	530	114	600	551	520	20	M24	20	M24	20	M24
	500	980	375	265	380	126	670	620	585	140	675	620	585	126	650	601	572	20	M27	20	M24	20	M24