Marine Cast Iron Gate Valve

Marine Cast Iron Gate Valve

Introduction:

This product is suitable for controlling the opening and closing of the medium in the fuel pipeline, lubricating oil pipeline, water pipeline and steam pipeline to prevent backflow when the temperature does not exceed 120℃.
Flange size is according to JIS B2220 steel pipe flange size.

Configuration Selection：

Name of Parts	Material	Advantages/Disadvantages
Valve Body	Bronze	seawater corrosion resistance.
	Cast Steel	The price is higher than cast iron and lower than bronze. It has high mechanical strength and toughness. With heat resistance, corrosion resistance, wear resistance and other special properties.
	Cast Iron	Anti-corrosion, it’s cheaper than cast steel and bronze.
Valve Disc	Bronze	Bronze has excellent low temperature resistance and is a little more expensive than stainless steel.
Valve Disc	Stainless Steel	Stainless steel will not corrode, pit, rust or wear and stainless steel is resistant to high temperatures.
Valve Stem	Stainless Steel	A good acid and alkali - resistant, heat resistant properties
Valve Stem	Brass	It has the advantages of high strength, toughness, good antifriction, high corrosion resistance in the atmosphere and sea water, but it has the tendency of corrosion and rupture
Valve Seat	Bronze	Anti-corrosion，it’s expensive than cast steel and cast iron.
Valve Seat	Cast Iron	Not resistant to corrosion,cost less than bronze and cast steel
Hand Wheel	Cast Iron	Cost less than bronze and cast steel

Specific Differences Between US and Other Suppliers:


Product Picture of other low quality supplier		Product Picture of our factory
Other low quality supplier	Consequence	Our Factory	Result
Jerry-built, the valve body wall thickness does not follow the standard processing	Uneven thickness and material, it’s easy to damage the valve body.	Strictly in accordance with the standard processing	Customer use rest assured, to meet user needs, the product has long service life.
Use recovered waste valves as good valves.	It is easy to cause the shell to crack, and in severe cases, the oil and gas pipelines will explode.	Strictly in accordance with customer material requirements to manufacture new valves.	Meet the hardness and precision requirements of standard valves, Ensure the valve quality, ensure the normal operation of equipment.
Flange manufacturing quality is poor, there are cracks, pores, thickness is not enough and other problems	Lead to poor wear resistance of the valve, the valve is prone to quality problems, short service life.	Material selection in strict accordance with national standards	Valve wear resistance, pressure performance is good, not easy to damage
Bronze valve disc was replaced with cast iron valve disc in order to reduce costs.	Cast iron valve disc is prone to corrosion and damage	Material selection in strict accordance with national standards	High safety factor, reasonable structure
The valve stem hardness is too low, there are cracks, the valve stem is not round, and the valve stem is not bent and straight.	Stem sealing surface is easy to damage	Material selection in strict accordance with national standards	High stem hardness, no crack, good sealing performance, long service life of the valve.

Outline drawing:


	①Valve Body：Cast Iron(FC200)
	②Valve Seat：Bronze(BC6)
	③Valve Disc：Bronze(BC6)
	④Valve Stem:Brass (C3771BD)

Specification:

Size	L	D	C	NO.	h	t	H	D2	kg
50	200	155	120	4	19	20	300	140	19.4
65	220	175	140	4	19	22	350	160	27.6
80	230	185	150	8	19	22	400	180	33
100	250	210	175	8	19	24	450	200	45.8
125	270	250	210	8	23	24	520	224	65.9
150	290	280	240	8	23	26	580	250	86
200	320	330	290	12	23	26	700	315	136
250	380	400	355	12	25	30	840	400	230
300	440	445	400	16	25	32	960	450	331
350	500	490	445	16	25	34	1050	500	433
400	590	560	510	16	27	36	1150	560	597
450	640	620	565	20	27	38	1260	600	704
500	710	675	620	20	27	40	1380	680	901

Our Inventory:

Certification:

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