Vacuum check valve, also known as vacuum blocking valve, vacuum check valve, vacuum one-way valve, etc., is installed at the suction port of the vacuum pump to prevent the working fluid and air of the vacuum pump from flowing back to the vacuum system in case of pump shutdown or unexpected power outage, which may cause contamination of the working fluid and damage to the vacuum system.
Item NO.:
XUVAL33-364Lead Time:
45 DaysProduct Orgin:
CHINABrand:
XUVALShipping Port:
ShanghaiPayment:
100%TTColor:
silveryMOQ:
1The design of the vacuum flange insertion (VI) check valve is suitable for ISO/NW/KF/QF vacuum flanges according to DIN 28403, DIN 28404, ISO 1609, and ISO 2861. It is both a central ring and a check valve. Compact design does not require additional space. Compared to valves with valve bodies, it is more economical. VI valves can also be used as low-pressure safety valves under forward or vacuum conditions.
A valve that relies on the flow and force of the medium to open or close, in order to prevent the backflow of the medium, is called a vacuum check valve. Vacuum check valves belong to the automatic valve category and are mainly used in pipelines with unidirectional flow of media. They only allow media to flow in one direction to prevent accidents.
Vacuum check valves can be divided into two types based on their structure: vertical and horizontal.
Mainly used in the extraction system of liquid ring vacuum pumps such as water ring vacuum pumps and oil ring vacuum pumps, as well as on negative pressure pipelines, this valve is sealed with PTFE, which enhances the reliability of the seal and adds noise reduction function to the corrosion-resistant valve.
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