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Beijing Valve General Factory Co., Ltd., formerly known as Beijing Valve General Factory, was established in 1952. It is a key backbone enterprise of the former Ministry of Machinery Industry manufacturing high and medium pressure valves and steam traps.
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News

Beijing Valve General Factory Co., Ltd. is a member of the material supply network of large enterprises such as China National Petroleum Corporation, China Petrochemical Corporation, and State Electric Power Corporation.
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It has been rated as a famous trademark of Beijing since 2009, and has won the “National High-tech Enterprise Certificate” for seven consecutive years.
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Technical 
Technical

The vice chairman unit of the National Valve Industry Association and a member unit of the National Quality Inspection Association.Obtained a municipal valve R&D center institution.
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Application 
Application

The product varieties of Beijing Valve Factory include various types of steam trap valves, liquefied petroleum gas gate valves, globe valves, ball valves, check valves, butterfly valves, high temperature...
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- Domestic performance
- Foreign performance
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Careers

There is currently 1 pressure pipeline expert committee member of the State Administration of Market Supervision and Administration.One member of the National Valve Standardization Technical Committee is responsible for the review of valve standards.
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Products

Regulating valve

ZMAP/ZMAN type single-seat/double-seat pneumatic membrane regulating valve

Number of views:

1000

ZMAP/ZMAN type single-seat/double-seat pneumatic membrane regulating valve

Retail price

0.0

元

Market price

0.0

元

Number of views:

1000

Product serial number

Quantity

Stock:

服务热线010-8928 3399

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企业荣誉企业风采

Product introduction

Parameters

Product description

ZMAP type single-seat pneumatic membrane regulating valve, ZMAN type two-seat pneumatic membrane regulating valve: it consists of two parts: pneumatic membrane actuator and regulating valve. It is used in conjunction with pneumatic regulators, pressure reducing valves and other instruments to control the temperature, pressure, liquid level, flow and other process parameters in the pipeline.The single-seat regulating valve has the advantages of easy sealing and small leakage, but the equilibrium force is large, so the working pressure difference should not be too high.The two-seat regulating valve has the characteristics of large flow coefficient and small unbalanced force, so it is widely used.

Product features: ①The single-seat pneumatic membrane regulating valve has the characteristics of easy sealing and low leakage, but the unbalanced force is large, so the working pressure difference should not be too high.②The two-seat pneumatic membrane regulating valve has the advantages of large rated flow coefficient and small unbalanced force, so it is widely used.

Product performance parameters


DN/mm	PN	Ambient temperature/℃	Inherent flow characteristics	Maximum air source pressure/MPa
25~300	16, 40, 63	-30~60	Straight line, equal percentage	0.25

DN/mm	Circulation capacity C		Itinerary/mm	Equipped with execution Device model	Gray cast iron valve			Cast steel and cast stainless steel valves
	Single seat	Two-seater			PN	Working pressure /MPa	Medium temperature /℃	PN	Working pressure /MPa	Medium temperature /℃
25	8	10	16	ZMA-2	16	16	≤200	40 63	40 63	≤250 （Ordinary upper valve cover） ≤450 （Upper valve cover with heat sink）
32	12	16
40	20	25	25	ZMA-3
50	32	40
65	50	63	40	ZMA-4
80	80	100
100	120	160
125	200	250	60	ZMA-5
150	280	400
200	450	630
250		1000	100	ZMA-6
300		1600

Product parts and materials

PN	Valve body, upper valve cover, lower valve cover	Valve core, valve stem, valve seat	Gasket	Packing
16	HT200	1Cr18Ni9	Asbestos rubber sheet	PTFE
40	ZG25	1Cr18Ni9	Asbestos rubber sheet	PTFE
63	1Cr18Ni9	1Cr18Ni9	石Asbestos rubber sheet	PTFE

Product shape and structure size（mm）

DN	D	D₁	D₂	f	b	z×Φd	t	L
25	115	85	65	2	16	4×Φ14	4	185
32	135	100	78	2	18	4×Φ18	5	200
40	145	110	85	3	18	4×Φ18	5	220
50	160	125	100	3	20	4×Φ18	5	250
65	180	145	120	3	20	4×Φ18	5	275
80	195	160	135	3	22	8×Φ18	5	305
100	215	180	155	3	24	8×Φ18	5	350
125	245	210	185	3	26	8×Φ18	5	410
150	280	240	210	3	28	8×Φ23	5	450
200	335	295	265	3	30	12×Φ23	5	550
250	405	355	320	3	32	12×Φ25	5	640
300	460	410	375	4	34	12×Φ25	5	720

DN	L	D	D₁	D₂	f	D₃	f₁	b	z×Φd	H₂	H₁	H₁ˊ
25	190	115	85	65	2	58	4	16	4×Φ14	117	570	676
32	210	135	100	78	2	66	4	18	4×Φ18	120	573	679
40	230	145	110	85	3	76	4	18	4×Φ18	139	645	751
50	255	160	125	100	3	88	4	20	4×Φ18	144	650	756
65	285	180	145	120	3	110	4	22	8×Φ18	188	821	976
80	310	195	160	135	3	121	4	22	8×Φ18	208	831	986
100	355	230	190	160	3	150	4.5	24	8×Φ23	220	843	998
125	425	270	220	188	3	176	4.5	28	8×Φ25	268	1045	1228
150	460	300	250	218	3	204	4.5	30	8×Φ25	278	1055	1238
200	560	375	320	282	3	260	4.5	38	12×Φ30	320	1097	1280
250	655	445	385	345	3	313	4.5	42	12×Φ34	435	1526	1703
300	735	510	450	408	4	364	4.5	46	16×Φ34	465	1544	1721