Pressure relief valves are used on liquid storage tanks and other process vessels or systems to prevent structural damage due to excess internal pressure.
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.
To prevent tank damaged, vapor must be allowed to vent into of the tank at specified pressure condition. The volume rate of venting depends upon the tank size, volatility of the tank contents, the pumping rates and the temperature. Refer to API Standard 2000 for the procedures to determine venting requirements.
A relief valve must be carefully maintained by a qualified valve technician. It should only be assembled under clean conditions, preferably in a service shop. Carefully read and understand this manual before installing or attempting to repair a valve. NEOTECHKOREA offers repair services for all products manufactured by us.
Model No |
Type |
Setting Pressure Range |
NK-BV13W |
Weight Loaded release to ATM |
22 ~ 700 mmH2O |
NK-BV13S |
Spring Loaded to ATM |
Above 700 mmH2O |
PRESSURE RELIEF
As the pressure in the storage tank increases. When the set pressure is reached, the pressure pallet lifts and relieves to atmosphere (or to a header if it a pipe away valve).Model NK-BV10, NK-BV13 of quick-opening type is designed for emergency relief of pressure above capacity that supplied by a standard operating valve used on tanks, piping and low pressure vessels. It provides relief from excessive internal pressure that may cause tank damage. Model NK-BV10, NK-BV13 has self-draining housing body and drip rings to protect seating surfaces from condensation and freezing. Model NK-BV13 is for use where pressure relief is required and all relieving vapors must be piped away.
DRAWING AND DIMENSION (NK-BV13W) Unit : (mm)
SIZE |
I.D1 |
I.D2 |
H1 |
H2 |
L1 |
L2 |
2"X3" |
80 |
80 |
251 |
100 |
248 |
150 |
3"X4" |
80 |
100 |
309 |
120 |
258 |
160 |
4"X6" |
100 |
150 |
379 |
145 |
360 |
220 |
6"X8" |
150 |
200 |
489 |
180 |
380 |
240 |
8"X10" |
200 |
250 |
532 |
215 |
420 |
253 |
10"X12" |
250 |
300 |
623 |
265 |
491 |
298 |
12"X14" |
300 |
350 |
686 |
285 |
548 |
330 |
DRAWING AND DIMENSION (NK-BV13S) Unit : (mm)
SIZE |
I.D1 |
I.D2 |
H1 |
H2 |
L1 |
L2 |
2"X3" |
50 |
80 |
280 |
100 |
248 |
150 |
3"X4" |
80 |
100 |
340 |
120 |
258 |
160 |
4"X6" |
100 |
150 |
400 |
145 |
360 |
220 |
6"X8" |
150 |
200 |
489 |
180 |
380 |
240 |
8"X10" |
200 |
250 |
550 |
215 |
420 |
253 |
10"X12" |
250 |
300 |
623 |
265 |
491 |
298 |
12"X14" |
300 |
350 |
700 |
285 |
548 |
330 |
• Storage Tank Accessory
• Tel : 82 55 762 0019 Fax : 82 55 762-2251
• Email:neotech@neotechkorea.com
• Name : KyungRo Lee
• Homepage : http://www.corpwin.com
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