Emergency Vent Cover (NK-EV31W)

DESIGN AND FUNCTION

Model NK-EV31 is designed to protect the tank against rupture or explosion that could result from excessive internal pressures caused by fire etc.

Model NK-EV31 is designed to provide emergency relief capacity beyond that furnished by the normal operating pressure relief valve on the storage tank.

The feature of Model NK-EV31 is that the pressure relief cover is designed to lift only far enough to flow its rated capacity should high tank pressure be encountered then reseal automatically when the tank pressure is reduced.

 

 

 

 

SPECIFICATIONS

Installation	Vertical,
Type	Weight loaded, conventional vent
Size	16",20",24"
Set Pressure / Vacuum	Maximum 700mmH²O

 

MATERIALS

PART NAME	MATERIALS STANDARD	MATERIALS OPTIONAL
Body	Carbon Steel, 304 S.S, 316 S.S,Aluminum	Hastelloy, Alloy 20, FRP, PTFE, ETFE LINEDl
Pallet	304 S.S,316 S.S,316L S.S	Hastelloy, Alloy 20, FRP, PTFE, ETFE LINED
Weight	A283-C	304 S.S,316 S.S,316L S.S
Diaphragm/O-ring	Teflon(Diaphragm seal)	NBR, Viton(O-ring seal)

 

 

Model No	Type	Setting Pressure Range
NK-EV31W	Weight Loaded release to ATM	22 ~ 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.

 

 

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.

 

DRAWING AND DIMENSION (NK-EV31W)  Unit : (mm)

 

 

SIZE	I.D	T	H
16"	400	20	300
20"	500	20	350
24"	600	20	380

 

• 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