Pressure Vacuum Relief Valve(NK-BV12 Series)

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Place of Origin
Laos,South Korea
Brand name
Payment Terms
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Negotiable / Negotiable
pressure, breather valve, pressure relief valve, vacuum relief valve
Other Security & Protection Products
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NeoTech Korea

Country / Year Established
South Korea South Korea / 2013
Business type
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Product name Pressure Vacuum Relief Valve(NK-BV12 Series) Certification -
Category Other Security & Protection Products Ingredients -
Keyword pressure , breather valve , pressure relief valve , vacuum relief valve Unit Size -
Brand name NeoTechKorea Unit Weigh -
origin Laos,South Korea Stock -
Supply type - HS code 8481

Product Information

Prssure / Vacuum Relief Valve(MODEL:NK-BV12 Series)


Pressure / Vacuum relief valves are used on liquid storage tanks and other process vessels or systems to prevent structural damage due to excess internal vacuum.

Storage tanks are pressurized when liquid is pumped in, compressing the existing vapor or when rising temperatures cause increased evaporation or expansion of existing vapor.

Conversely, a vacuum condition may be created when pumping out or due to falling temperature. To prevent tank damage, vapor must be allowed into or out of the tank at specified vacuum condition. The volume rate of venting depends upon the tank size, volatility of the tank contents, the pumping rates and the temperature.


Tank protection equipment typically includes an operating valve, which is designed to provide pressure/vacuum relief under normal pump in/out and thermal breathing conditions.




Pressure Relief 

:  As the pressure in the storage tank increases, the vacuum pallet is held shut.

When the set pressure is reached, the pressure pallet lifts and relieves to atmosphere (or to a header if it a pipe away valve).



Vacuum Relief
: As a vacuum is drawn in the storage tank (for example, when fluid is being pumped out),
the pressure pallet is held shut by atmospheric pressure. When the vacuum setting is
reached, the pallet lifts and air is drawn in the storage tank from the atmosphere.



Model NK-BV12 is designed to protect the low-pressure tank from damage created by overpressure or excessive vacuum.
Model NK-BV12, has a self draining house and drip ring to protect the seating
surfaces from condensation and freezing. The pressure and vacuum relief valve is
installed on the storage tank roof. Also can this valve be mounted in conjunction with a
NK-FA21T flame arrester to protect against ignition of flammable vapors from external

sources as well as to provide pressure vacuum relief.
Model NK-BV15 is used for pressure and vacuum relief where vapors must be piped away.







B2B Trade

Price (FOB) Negotiable transportation -
MOQ Negotiable Leadtime Negotiable
Payment Options T/T Shipping time Negotiable

NeoTech Korea

Country / Year Established
South Korea South Korea / 2013
Business type



KyeongRo Lee
112-701, 10Ho 348, Byeon-Gil, Nedong-Ro,Jinju-City, Kyungnam, Korea
Product Category
Other Machinery & Industry Equipment,Other Security & Protection Products
Year Established
No. of Total Employees
Company introduction
We are specialized in the manufacture of pressure and vacuum relief valves and flame arresters, as well as safety protection devices for liquid petroleum and petroleum products storage tanks, treatment, nitrogen blanketing systems for automatic nitrogen sealing devices, explosive venting systems, and other related products. All NEOTECHKOREA products are designed, manufactured and tested in accordance with API 2000, API 650, API 2521, API RP 520, EN12874, BS 7244 and other relate recognition code or purchase order specification. For the customer’'s safety, convenience and prosperity, we have been studying every aspect of storage tank & protection equipment and developing several methods ranging from field application to new products for higher safety standard since our foundation in 1999. All the staffs of our company are making every effort to make quality products to meet the needs of customers, through continuous technical development. Corporation NEOTECHKOREA’s quality management systems have been assessed and certified by ABS Quality Evaluation Inc. of Houston of USA and our products are manufactured in accordance with the requirement of ISO 9001 quality assurance procedures and assessed under strict quality standards before delivery to our customers. We promise to do our best to give our customers satisfaction, from the engineering of the high world standard to perfect after-sales service. As you are well aware, we are in a good position to export our quality products to global markets at reasonable prices with attractive delivery terms. In this regard, we would like to invite you to visit our homepage at <a href=""> for reviewing our company’s profile and activities in advance. If you like to know more about our company, please do not hesitate to contact us at your earliest conveniece
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