Stainless Steel Breathing Manhole

• Customization: Available
• Use to: Chemical Tank and Oil Tank
• Connect: Flange End
• Model NO.: ZCHRK-II
• Warranty Period: 18 Month
• Pressure Rating: -40mmh2o~+200mmh2o
• Material Quality: Wcb 304 316L
• Medium Temperature: Normal Temperature, Medium Temperature, High Tempe
• Medium: Gas
• Transport Package: Wooden Cases
• Specification: 16"-24"
• Trademark: Zhenchao
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481804090
• Production Capacity: 5000PCS/Year

Product Description

company size 

Zhejiang Zhen chao Petrochemical Equipment Co Ltd.was founded in 2006, located in Oubei,Yongjia, Zhejiang Province.A company specializing in the production of storage tank protection equipment, at present the company mainly deals with:flamearresters, breathing valves, emergency pressure relief manholes, hydraulic safety valves, oil measuring holes and other storage tank accessories.


 

 

Product Description

 

Product model	ZCHRK-II
Pressure Rating	(-392pa~ +1961Pa)(-40mmH2O~+200mmH2O))
medium temperature	Normal temperature, medium temperature, high temperature
Use To	Chemical tank and oil tank
Connect	Flange end
country of origin	zhejiang china
Sale Type	Factory Direct Sale
Warranty Period	18 Month

 

Emergency Release Manhole
 

   Emergency relief manhole is a fast relief device, its technical performance, main parts and materials are the same as breathing manhole. Emergency relief manhole is a safe emergency ventilation device installed on petrochemical equipment and storage tanks. It is usually used in conjunction with the breathing valve installed on the top of the tank to maintain the normal pressure in the tank. It can avoid accidents caused by sudden overpressure or vacuum in the tank due to unexpected reasons and damage the tank; it has constant pressure discharge, constant pressure inhalation, flexible type closure, compact structure and sealing. It has the advantages of good performance, safety and reliability.

Product Feature:

 

   Under the normal working condition of fire-retardant breathing valve, the emergency Vent is basically sealed and the storage tank is under normal pressure. When the normal operation of the breathing valve can not meet the sudden overpressure of the storage tank caused by accident, the relief cover of the relief manhole automatically opens and carries out emergency relief to keep the pressure in the tank normal; when the pressure in the tank is sharply reduced or ultra-vacuum, the inhalation valve opens and inhales the atmosphere rapidly to maintain the normal pressure in the tank; when the atmosphere is inhaled with sparks and flames, the fire barrier acts as the wall of the tank. The function of "effect" is to prevent the flame from passing in order to protect the safety of storage tanks.

 

Operating pressure:
 

(-392pa~ +1961Pa)(-40mmH2O~+200mmH2O) Or customer-specified pressure

 

Parameter characteristics:

Body Material (WCB ,304,316)
Seal Material ( FEP/PTFE )
ambient temperature(-30C°~+60C°)

Maintenance:

Maintenance and maintenance of emergency release manhole once a month, twice a month in winter. Its method: first open the valve cover gently, check whetherthe pressure cover is stained or damaged, check whether there is oil and dirt in the sealing place between the valve disc and the valve disc, if there is oil and dirt, it shouldbe cleaned up, then put it back in place, pull it up and down several times to check whether the opening is flexible and reliable. If everything works, tighten the bonnet.In maintenance and maintenance, if abnormal phenomena such as scratches and abrasion are found on the pressure plate, it should be replaced immediately or contacted with the supplier company so as to be solved in time.


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.