PRESSURE EQUALISATION VALVES

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Pressure equalisation valves adjust for any pressure difference and prevent damage to stored or transported products due to internal or external overpressures.

Description of pressure equalisation valves

Atmospheric pressure differences between the containers and the external atmosphere are brought about by air transports and temperature fluctuations on the ground. Pressure equalisation valves are used to prevent damage to the transported goods or storage containers due to internal or external overpressure. Pressure equalisation valves are set to any desired pressure differences and are available in a variety of designs. They are offered as 1- and 2-way valves, as well as with or without manual discharge. The pressure equalisation valves comply with the requirements of the International Air Transport Association (IATA) and the Society of Automotive Engineers (SAE).

Applications of equalisation valves

The main applications of pressure compensating valves are:

Export of products
Protection of goods
Military applications
Aviation industry

Specifications of equalisation valves

Below is a table specifying the different types of pressure compensation valves based on their flow rates, that is, the amount of steam or gas they let through.

Pressure equalisation valves. Drying agent

Figure number	Type	Throughflow Rate	Maximum container volume	Comments
1	TA 292-R	14 l /min	100 l	–
2	TA 294-R	28 l /min	200 l	–
3	TA 238-R	100 l /min	1000 l	–
4	TA 240-R	100 l /min	1000 l	–
5	TA 340-R	85 l /min	700 l	With humidity indicators for 20, 40 and 60% RH
6	TA 440-R	100 l /min	1000 l	With humidity indicators for 20, 40 and 50% RH
7	TA 330	100 l /min	1000 l	–
8	TA 333-R	100 l /min	1000 l	Screened
9	TA 770-R	700 l /min	6000 l	Screened
10	BLD 6637	100 l /min	1000 l	–
11	BLD 7047	100 l /min	1000 l	FDA
12	BLD 9314	14 l /min	100 l	–
13	BLD 9629	14 l /min	100 l	–
14	BLD 8555	7 l /min	50 l	With humidity indicator
15	BLD 9156	4200 l /min	30000 l	–
16	BLD 10705	54000 l /min	350000 l	Suitable for rapid decompression

Further pressure equalisation elements specifications

Below we show you the specifications of the open pressure compensation elements for protection against dust and splashes which, however, unlike valves, allow the passage of water vapor.

Figure number	Type	Throughflow Rate	Comments
1	BLD 9975	0.03 l /min	Spray-protected
2	BLD 6343	0.15 l /min	Spray-protected
3	BLD 9290	0.6 l /min	Spray-protected
4	BLD 10518	0.6 l /min	Spray-protected
5	BLD 6693	0.1 l /min	Spray-protected
6	BLD 9036	0.6 l /min	Spray-protected

To purchase pressure compensating valves or request more specifications, please contact us.

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