Atmopheric Fire Retardant Pressure Vacuum Relief Valve

• Customization: Available
• Size: DN50 - DN300
• Class: 150lb to 2500lb
• Model NO.: QZF-89
• Certificates: API 6D, CE, ISO9001
• Application Fields: Metallurgy,Light Industrial,Electric Power,Petroch
• Delivery Detail: 20~45 Days According to The Specific Quantities
• Transport Package: Standard Export Wooden Case
• Specification: API6D, ISO9001, CE, SGS, etc
• Trademark: NIPO
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481804090
• Production Capacity: 2000PCS/Year

Product Description

Explosion-Proof Pressure Vacuum Vent  Breather Valve

Model QZF-89 is designed to vent to atmospheric to protect your tank from damage created by over-pressure or excessive vacuum.The flame arrestor performs as an extinguishing barrier,which absorbs and dispels heat,reduces fire temperature and the oxyen level to stop the fire through layers of metal ribbons shaped with crimped corrugations.

Operating pressure:
Type A: +355pa(+36mmH2O) -295pa(-30mmH2O)
Type B: +980pa(+100mmH2O) -295pa(-30mmH2O)
Type C: +1970pa(+200mmH2O) -295pa(-30mmH2O)
Type D:  according to user requirement (special pressure rating)
 

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: 
HT, AL, A3, 18-8, 304, 304L, 316, 316L.
 
Flange standards: 
HG20592-97 PN1.0 (also can be produced according to user specified criteria)


WORKSHOP


 

FAQ: 

1. What is your MOQ?
Our MOQ is usually 1 QTY.

2. What is your delievery time?
Our delievery is about 25-30days.

3. What is your payment terms?
We accept T/T, 100% L/C, or West Union and so on.

4. Could you provide free samples?
Usually, we offer free samples, customers bear freight cost. 

5. Why choose us?

Firstly, 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.