Top release positive and negative pressure appeal for positive and negative pressure 508 breathing valve

Product Introduction

It is considered as a must-have facility for the ash silo.
The pressure may change when the air stream inflows the ash silo or outflows, or the temperature rises or reduces. 
 Positive and negative pressure 508 breathing valve  (So-called Ash Silo Relief Valve or Ash Silo Vacuum Relief Valve): is mainly used on the top of the Steel Silo or Ash Silo to release the extra pressure so that it will stay at a safe range all the time. 
 Vacuum Relief Valve is made up of lid, spring ring, movable ring, film, spring of the retainer ring, retainer  ring, valve lid, Valve base. 
It is a type of valve used to control or limit thepressure in a system or ash silo which can build up by a process upset, instrument or equipment failure, or fire.

Working Principle 

1.Static status: Once you set up a pressure range. Normally,  pressuer could be maintained at a stable level in the ash silo.The valve lid keeps static, and the whole valve is completely sealed.

2.Pressure-Release Status: when the pressure rises upon the setted range, the valve lid would be opened automatically to release the extra airstream.As the pressure goes down to the standard level, the valve lid would be closed automatically.

3.Vacuum-Released Status: when the pressure is lower than the Standard Atmospheric Pressure in the ash silo, it generates vacuum in the silo.Then the film works and adjusts the air pressure back into the safety range.So that, Relief Valve protects the silo from safety hazard. 

Product Exhibition

Features

1. Customized is allowed.
2. Installing in welding or bolts.
3. Factory price.
4. Stock any time.
5. Positive rating:100%.
6. Neccessary device in storage silo.

 Technical Parameters 

Private Customized:

We design  different positive and negative pressure 508 breathing valve according to

specific requirement.

Customers’ Guidance:

Please leave the following info in inquiry

1.  What’s the raw material  ( carbon steel or stainless steel  )

 2. What’s the entrance diameter( 508 mm /273 mm  or customized)

Because with these factors, we are able to give you a fast answer.

Certification:

Q1: Are you a direct  manufacturer of the positive and negative pressure 508 breathing valve ?

A1: See the picture.

Warm Taps:The prices in the web only to be reference, according to raw material’s price fluctuations, Specific price is subject to the call.

Q2: How long we will get the reply ?

A2: Immediately reply on Skype: Shanghai Manda ,

    24 hours on email :manda1188 at hotmail dot com.

Q3: The faster way to contact ?

 A3: Call +86-185 1622 1729 talk with Mr.Dong Rain right now!