Operating pressure:
A,-295Pa (-30mmH2O) +355Pa (+36mmH2O)
B,-295Pa (-30mmH2O) +980Pa (+100mmH2O)
C,-295Pa (-30mmH2O) +1750Pa (+180mmH2O)
D,Customer specified
Working medium:
Gasoline ,kerosene,diesel oil,aromatic naphtha,air etc, or other petrochemical material.
Note:
under normal circumstances, (fire) breathing valve operating pressure to B shall prevail;
Applicable materials:
gasoline, kerosene, diesel, aromatics, sulfur, air and other petrochemical materials;
Environment temperature:
-40 ºC -+60 ºC;
Shell material:
AL, 304, 304L, 316, 316L.
Flange standards:
HG20592-2009 PN1.0 (also can be produced according to user specified criteria)
Installation :
1.Removing packaging and reading product instructions are critical.
2.When lifting the breathing valve, appropriate lifting tools should be selected to avoid damaging the protective cap of the valve disc.
3.Check the coaxiality and verticality of the pipe flange on the tank or water tank. The normal use of the Pressure Vacuum relief valve is very important.
4.Check the line surface of the pipe flange on the tank or water tank. It must be clean, free of scratches, corrosion, tool traces and flat.
5.Remove flange end cover and other packaging materials.
6. Check the gasket and make sure that the material is suitable for application.
7. Use bolt circles to center the washer.
Working principle:
1. When the pressure of the medium in the tank is within the control operating pressure range of the breathing valve, Pressure Vacuum relief Valve with Pipe / Breather valve with Pipe does not work and keeps the tank closed.
2. When the medium is added to the tank, the pressure of the upper gas space in the tank rises, reaching the positive pressure of the operation of the breathing valve, the pressure valve is opened, and the gas escapes from the exhaust outlet of Pressure Vacuum relief Valve with Pipe / Breather valve with Pipe, so that the pressure in the tank does not continue to increase.
3. The atmosphere outside the tank will open the negative pressure valve disc of Pressure Vacuum relief Valve with Pipe / Breather valve with Pipe.
PRODUCTION PROCESS
TESTING
Delivery conditions and packing
Delivery Time |
15-30days |
package |
Standard Exporting Plywood Case |
Shipping Port |
Shanghai/Ningbo China |
Shipping Terms |
EXW, FOB, CFR, CIF |
Payment Terms |
30% prepayment, 70% balance paid before shipping |
CERTIFICATES
FAQ:
1.Can I get samples from your factory?
Yes, Samples can be provided.
2. What is your MOQ?
Our MOQ is usually 5 CTNS.
3. What is your delievery time?
Our delievery is about 15-30days.
4. What is your payment terms?
We accept T/T, 100% L/C, or West Union and so on.
5. Can we print our logo on your products?
yes, we offer OEM/ODM service, we support the customized logo, size, package,etc.
5. Why choose us?
we are a manufacturer, we have manufactured valve for over 20 years .comparing with many factories, our prices are more competitive.
Secondly, We 100% test working pressure for ALL our products.
Finally, After- Services will be highly satisfied. Any problems and feedbacks will be responded efficiently.