Vacuum Isolation Shut Off Valve High Vacuum UHV for Semiconductor PVD CVD Stainless Steel CF Flange China Manufacturers Bulk Price

Vacuum Isolation Shut-Off Valve

Vacuum isolation globe valve is a special valve designed for vacuum systems, which achieves precise control of gas flow and system sealing through a dual sealing structure and vacuum isolation design. It adopts parallel double sealing pairs and wedge block clamping technology to achieve zero leakage. The valve cover packing chamber is equipped with high-strength expansion material to form a self expanding compression seal, ensuring complete isolation of the system from the atmosphere. Suitable for high temperature and negative pressure environments up to 550 ℃, commonly used in condensation systems of thermal power plants, chemical equipment, and other scenarios, supporting manual or electric operation.

Get a quote

Standardization and universality
Environmental Protection and Safety
Easy operation and maintenance
Optimization of fluid resistance
Resistant to extreme working conditions
Compact structure and lightweight design
Corrosion resistance and long lifespan
Double sealed zero leakage design

Standardization and universality

Standardization and universality
01
Manufactured in accordance with national standards such as JB/T3595, with a diameter range covering millimeters to meters, suitable for high vacuum to high pressure systems, and strong versatility.

Environmental Protection and Safety

Environmental Protection and Safety
01
High sealing performance to prevent medium leakage, especially suitable for toxic and flammable medium scenarios; The vacuum isolation design reduces the risk of environmental pollution and complies with industrial safety standards.

Easy operation and maintenance

Easy operation and maintenance
01
Support manual or electric drive, quick opening and closing (only 90 ° rotation is required for fully open/fully close); Filling replacement and valve seat cleaning do not require downtime, significantly reducing maintenance costs.

Optimization of fluid resistance

Optimization of fluid resistance
01
The internal flow channel of the valve is designed to be smooth, and the fluid resistance coefficient is equivalent to that of the same length of pipe section, reducing the energy loss of medium flow.

Resistant to extreme working conditions

Resistant to extreme working conditions
01
Tolerate high temperatures of ≤ 425 ℃ and ≤ 550 ℃, suitable for harsh scenarios such as steam turbine condensation systems and vacuum negative pressure environments in thermal power plants, and maintain stable sealing under high pressure and high vacuum conditions.

Compact structure and lightweight design

Compact structure and lightweight design
01
Simple and compact structure, lightweight, supports flange or welding connections, suitable for complex pipeline layouts; Convenient maintenance, automatic compensation for worn sealing surfaces, reducing maintenance frequency.

Corrosion resistance and long lifespan

Corrosion resistance and long lifespan
01
The valve stem has undergone quenching and surface nitriding treatment, making it corrosion-resistant and scratch resistant; The valve body is made of cast and forged structure and stainless steel material, suitable for media such as water, steam, and air, with significantly extended service life.

Double sealed zero leakage design

Double sealed zero leakage design
01
Adopting parallel double sealing pairs for semi forced bidirectional sealing, zero leakage is achieved through the in place movement of the sealing surface and the step-by-step action of wedge-shaped block clamping; The valve cover packing chamber is equipped with a high-strength expansion material vacuum sealing structure, effectively isolating the system from the atmosphere and ensuring airtightness.

Main Component Materials

Part Name	Valve body、valve cover	valve stem	valve disc	sealing surface	stem nut	filler	fastener
DKJ61H-C type	25 or WCB	2Cr13	25	H: Cr13 stainless steel	aluminum bronze	Expansion conforms to graphite	high-quality carbon steel
DKJ61Y-I type	chromium-molybdenum steel	25Cr2Mo1VA	12Cr1Mo1VA	Y: Hard alloy	aluminum bronze	Expansion conforms to graphite	Chromium aluminum steel

Performance Specifications & Dimensions

Nominal Pressure PN

1.0/1.6/2.5/4.0/6.4/10.0/16.0
Shell F

Px1.5
Sealing Pressure

Px1.1
Medium

Water, steam, oil
Temperature (℃)

≤425℃、≤550℃

Nominal Diameter DN(mm)	PN1.0MPa									Electric H
Nominal Diameter DN(mm)	L	D	D1	D2	d	Z-φd	Dn	H	Do	Electric H
15	130	95	65	45	14	4-14	12	245	120	552
20	150	105	75	55	14	4-14	18	265	140	557
25	160	115	85	65	14	4-14	25	270	160	562
32	180	135	100	78	16	4-18	31	285	180	572
40	200	145	110	85	16	4-18	38	300	200	625
50	230	160	125	100	16	4-18	49	355	240	660
65	290	180	145	120	18	4-18	66	415	280	690
80	310	195	160	135	20	8-18	78	425	280	715
100	350	215	180	155	20	8-18	96	470	320	770
125	400	245	210	185	22	8-18	121	500	360	810
150	480	280	240	210	24	8-23	146	570	400	1060

Note: The above data is for reference only. For details, please consult the company's sales department

Valve Application

Oil & Gas Transportation

Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.
Chemical Raw Material Control

The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.
High Temperature SteamPipeline in Power System

High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.
Other Industries

Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.