DZ41W flange low-temperature gate valve-Global supplier

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1896411889715000726608
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Building 4, No. 686 Nanfeng Road, Fengcheng Town, Fengxian District, Shanghai

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DZ41W flange low-temperature gate valve

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Product details

Shanghai Wilton Valve Co., Ltdmain products(DZ41W flange low-temperature gate valve)Also domestically(Gate valve)One of the producers. Business scope of the company: production, processing, and sales of valves, fittings, and fluid equipment, sales of pipeline fittings, building materials, hardware and electrical equipment, and automatic control equipment, engaged in import and export business of goods and technology! Welcome new and old customers to call or write to us. We will wholeheartedly provide you with satisfactory service!

DZ41W flange low-temperature gate valve product overview:

Flange low-temperature gate valve refers to a valve that can-196℃Gate valves used under low temperature conditions,Mainly used in chemical plants such as 300000 tons of ethylene and liquefied natural gas. The output liquid low-temperature media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc. are not only flammable and explosive, but also require gasification when heated, and the volume expands hundreds of times during gasification.

working principle:

The flange low-temperature gate valve adopts Monel alloy as the main material, impregnated with polytetrafluoroethylene asbestos as the packing, and flexible graphite as the sealing material. This material is impermeable to gases and liquids, and has a thickness direction10%-15 %The elasticity and lower fastening pressure can achieve sealing. It also has self-lubricating properties and can be used as valve packing to prevent wear between the packing and the valve stem. The temperature range for the use of flexible graphite fillers is-200~870℃Suitable for low-temperature environments such as methane, liquid natural gas, hexene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, liquid hydrogen, etc.

Product features:

To prevent abnormal pressure rise in the middle chamber, a pressure relief hole is installed on the inlet side of the gate.

Determine the top length of the valve cover based on the operating temperature of the valve to ensure that the valve?Reliable sealing of fillers.

Reasonably select materials for components such as fillers and gaskets based on the working temperature.

Strictly control the chemical composition and mechanical performance indicators such as low-temperature impact toughness of materials.

Adopting various piping flange standards and sealing surface types, suitable for various engineering needs.

Execution standard for flange low-temperature gate valve:

design and manufacturing	Structure length	Flange size	pressure-temperature	test-test
JB/T7749	GB12221	JB79	Gb9131	JB/T9092

Pressure test of flange low-temperature gate valve:

nominal pressurePN	1.6	2.5	4.0	6.4	10.0
strength test	2.4	3.8	6.0	9.6	15.0
Water seal test	1.8	2.8	4.4	7.0	11.0
Back Seal test	1.8	2.8	4.4	7.0	11.0
Airtight seal test	0.4-0.7

Main component materials and performance of flange low-temperature gate valve:

Body cover plate	valve stem	Sealing surface	shim	filler	operation temperature	Applicable Medium
ZGoCrMNVAILow temperature and high pressure cast steel	1Cr7Ni12	STL/STL	1Cr13/Flexible graphite Low temperature asbestos	PTFEImmersed in polytetrafluoroethylene Asbestos rope Flexible graphite	-46	propane/Bingene methanol/ethane gas/liquid ammonia
LCB
ZGoCrMNVAILow temperature and high pressure cast steel					-60
LC1
ZGoCrMNVAILow temperature and high pressure cast steel					-73
LC2
ZGoCrMNVAILow temperature and high pressure cast steel	1Cr18Ni9Ti				-101
LC3
ZGoCrMNVAILow temperature and high pressure cast steel					-115
LC4
ZGoCrMNVAILow temperature and high pressure cast steel					-196

Main dimensions of flange low-temperature gate valve specifications(PN1.6MPa-2.5 MPa)：

1.6MPa	DN	L	D	D1	D2	b	n-Φd	H	D0
Convex method RF DZ40Y-16LCB DZ40Y-16LC1 DZ40Y-16LC2 DZ40Y-16LC3 DZ40Y-16LC4 DZ40Y-16P DZ40Y-16R	20	150	105	75	55	14	4-Φ14	320	140
	25	160	115	85	65	14	4-Φ14	350	160
	32	180	135	100	78	16	4-Φ18	385	180
	40	200	145	110	85	16	4-Φ18	420	220
	50	250	160	125	100	16	4-Φ18	540	240
	65	265	180	145	120	18	4-Φ18	610	240
	80	280	195	160	135	20	8-Φ18	690	280
	100	300	215	180	155	20	8-Φ18	780	300
	125	325	245	210	185	22	8-Φ18	930	320
	150	350	280	240	210	24	8-Φ23	980	350
	200	400	335	295	265	26	12-Φ26	1180	400
	250	450	105	355	320	30	12-Φ30	1390	450
	300	500	460	410	375	30	12-Φ30	1620	500
	350	550	520	470	435	34	16-Φ34	1810	500
	400	600	580	525	485	36	16-Φ36	1970	550
2.5MPa	20	150	105	75	55	16	4-Φ16	320	140
Convex method RF DZ40Y-25LCB DZ40Y-25LC1 DZ40Y-25LC2 DZ40Y-25LC3 DZ40Y-25LC4 DZ40Y-25P DZ40Y-25R	25	160	115	85	65	16	4-Φ16	350	160
	32	180	135	100	78	18	4-Φ18	385	180
	40	200	145	110	85	18	4-Φ18	420	200
	50	250	160	125	100	20	4-Φ20	540	240
	65	265	180	145	125	22	8-Φ22	510	240
	80	280	195	160	135	22	8-Φ22	690	280
	100	300	230	190	160	24	8-Φ24	780	300
	125	325	270	220	188	28	8-Φ28	930	300
	150	350	300	250	218	30	8-Φ30	980	320
	200	400	360	310	278	34	12-Φ34	1180	360
	250	450	425	370	332	36	12-Φ36	1390	400
	300	500	485	430	390	40	16-Φ40	1620	450
	350	550	550	490	448	44	16-Φ44	1810	500
	400	600	610	550	505	48	16-Φ48	1990	560

Main dimensions of flange low-temperature gate valvePN4.0MPa-10.0MPa:

4.0 MPa	DN	L	D	D1	D2	D6	b	n-Φd	H	D0
Concave method MFM DZ40Y-40LCB DZ40Y-40LC1 DZ40Y-40LC2 DZ40Y-40LC3 DZ40Y-40LC4 DZ40Y-40P DZ40Y-40R	20	150	105	75	55	51	16	4-Φ14	330	140
	25	160	115	85	65	58	16	4-Φ14	360	160
	32	180	135	100	78	66	18	4-Φ18	440	180
	40	200	145	110	85	76	18	4-Φ18	455	200
	50	250	160	125	100	88	20	4-Φ18	575	240
	65	280	180	145	120	110	22	4-Φ20	635	240
	80	310	195	160	135	121	22	8-Φ22	715	280
	100	350	230	190	160	150	24	8-Φ22	815	300
	125	400	270	220	188	176	28	8-Φ24	965	360
	150	450	300	250	218	204	30	8-Φ28	1025	400
	200	550	375	320	282	160	38	8-Φ30	1225	450
	250	650	445	385	345	313	42	12-Φ34	1440	560
	300	750	510	450	408	364	46	16-Φ34	1665	5470
	350	850	570	510	465	422	52	16-Φ41	1880	720
	4, 00	950	655	585	535	474	58	16-Φ18	2050	800
6.4MPa	20	190	125	90	68	51	20	4-Φ18	330	180
Concave method MFM DZ40Y-64LCB DZ40Y-64LC1 DZ40Y-64LC2 DZ40Y-64LC3 DZ40Y-64LC4 DZ40Y-64P DZ40Y-64R	25	210	135	100	78	58	22	4-Φ23	360	180
	32	230	150	110	82	66	24	4-Φ23	410	180
	40	240	165	125	95	76	24	4-Φ23	480	220
	50	250	175	135	105	88	26	4-Φ23	585	240
	65	280	200	160	130	110	28	8-Φ23	690	240
	80	310	210	170	140	121	30	8-Φ23	745	280

Structural diagram of DZ41W flange low-temperature gate valve:

DZ41W法兰低温闸阀结构图

Ordering process:
1. Fax the customer's purchase list, call for consultation, or email shweierdun@163.com
2. Received the customer's purchase list and provided the customer with valve model selection and quotation (price list)
3. Specific agreement: delivery time, special requirements, and other matters

Ordering Notice:
1. If the customer has special requirements for the product, the following instructions must be provided in the order contract:
a. Structural length;
b. Connection form;
c. Nominal diameter;
d. Product usage medium, temperature, and pressure range;
e. Testing, inspection standards, and other requirements.
2. Our factory can configure various driving devices according to specific customer requirements.
3. When the customer provides the determined valve type and model, the customer should correctly explain the meaning and requirements of the model, and sign the contract under the condition of mutual understanding between the supply and demand parties.
4. Futures and ordering customers are requested to first call and provide detailed information on the required valve model, specifications, quantity, delivery time, and location. And 30% of the total contract amount shall be prepaid, and the supplier shall prepare materials for production.

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