Electric gate valve

[Use of the product]

The electric gate valves produced by the company are widely used in petrochemical industry, thermal power plants and other oil products and water vapor pipelines as opening and closing devices for connecting or cutting off the media in the pipeline.

[Product Features]

1. Compact structure, reasonable design, good valve rigidity, smooth channel, and small flow coefficient.

2. The sealing surface is made of stainless steel and cemented carbide, which has a long service life.

3. Flexible graphite filler is used, sealed and reliable, and the operation is light and flexible.

4. The driving modes are manual, pneumatic, electric and gear transmission.

5. The structural form is elastic wedge single gate plate and rigid wedge single gate plate double gate plate type.

Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Detail

Execution Standards

Design specification: GB/T 12234

Structural length: GB/T 12221

Connection flange: JB/T 79.1

Test and inspection: JB/T 9092

Pressure-temperature: GB/T 9131

Product identification: GB/T 12220

Performance Parameters

Nominal pressure PN（MPa)	Shell	Test pressure（MPa)		Upper seal
Nominal pressure PN（MPa)	Shell	Sealing (liquid	Sealed (air）	Upper seal
1.6	2.4	1.8	0.6	1.8
2.5	3.8	2.8	0.6	2.8
4.0	6.0	4.4	0.6	4.4
6.4	9.6	7.0	0.6	7.0
10.0	15.0	11.0	0.6	11.0
16.0	24.0	18.0	0.6	18.0

Applicable Medium and Applicable Temperature

Shell material	Applicable medium	Applicable temperature（℃）
Carbon steel (Type C	Water, steam, oil products	≤425
Chromium-nickel-titanium steel (Type P	Nitric acid	≤200
Chromium-nickel-molybdenum titanium steel (Type R	Acetic acid	≤200
Chrome-molybdenum steel (Type I	Water, steam, oil products	≤550

Main Component Materials

Valve body, valve cover	Valve plate, valve seat	Valve stem	Valve stem nut	Packing material	Handwheel
Carbon steel	High-quality carbon steel + hard alloy or stainless steel	Chromium stainless steel	Aluminum bronze	Graphite asbestos packing	Malleable cast iron
Chromium-nickel-titanium steel	Stainless steel, stainless steel + cemented carbide	Chromium-nickel-titanium stainless steel	Aluminum bronze	Polytetrafluoroethylene	Malleable cast iron
Chromium-nickel-molybdenum titanium steel	Stainless steel, stainless steel + cemented carbide	Chromium-nickel-titanium stainless steel	Aluminum bronze	Polytetrafluoroethylene	Malleable cast iron
Chromium-molybdenum steel	Alloy steel + cemented carbide	Chromium-molybdenum steel	Aluminum bronze	Flexible asbestos	Malleable cast iron

Main appearance and connection dimensions

Nominal diameter	Main external dimensions and connection dimensions
Nominal diameter	L	D	D1	D2	b	Z-d	H	D0
Z41H-16
15	130	95	65	45	14-2	4-Φ14	170	120
20	150	105	75	55	14-2	4-Φ14	190	140
25	160	115	85	65	14-2	4-Φ14	205	160
32	180	135	100	78	16-2	4-Φ18	270	180
40	200	145	110	85	16-3	4-Φ18	310	200
50	250	160	125	100	16-3	4-Φ18	358	240
65	265	180	145	120	18-3	4-Φ18	373	240
80	280	195	160	135	20-3	8-Φ18	435	280
100	300	215	180	155	20-3	8-Φ18	500	300
125	325	245	210	185	22-3	8-Φ18	614	320
150	350	280	240	210	24-3	8-Φ23	674	360
200	400	335	295	265	26-3	12-Φ23	811	400
250	450	405	355	320	30-3	12-Φ25	969	450
300	500	460	410	375	30-3	12-Φ25	1145	580
350	550	520	470	435	34-4	16-Φ25	1280	640
400	600	580	525	485	36-4	16-Φ30	1452	640
Z41H-25
15	130	95	65	45	16-2	4-Φ14	170	120
20	150	105	75	55	16-2	4-Φ14	190	140
25	160	115	85	65	16-2	4-Φ14	205	160
32	180	135	100	78	18-2	4-Φ18	270	180
40	200	145	110	85	18-3	4-Φ18	310	200
50	250	160	125	100	20-3	4-Φ18	358	240
65	265	180	145	120	22-3	8-Φ18	373	240
80	280	195	160	135	22-3	8-Φ18	435	280
100	300	230	190	160	24-3	8-Φ23	500	300
125	325	270	220	188	28-3	8-Φ25	614	320
150	350	300	250	218	30-3	8-Φ25	674	360
200	400	360	310	278	34-3	12-Φ25	811	400
250	450	425	370	332	36-3	12-Φ30	969	450
300	500	485	430	390	40-4	16-Φ30	1145	580
350	550	550	490	448	44-4	16-Φ34	1280	640
400	600	610	550	505	48-4	16-Φ34	1452	640