- Model NO.: fire fighting
- Temperature: High Temperature
- Valve Seat: Double-Seat
- Material: Stainless Steel
- Color: Custom
- Specification: DN50~1000
- HS Code: 848180
- Certification: SGS, ISO
- Connection: Flange
- Structure: Bellows
- Logo: Custom
- Trademark: THT
- Origin: Tianjin, China
How modern Flame Arresters work
Flame arresters are passive devices with no moving parts. They prevent the propagation of flame from the exposed side of the unit to the protected side by the use of wound crimped metal ribbon type flame cell element.
This construction produces a matrix of uniform openings that are carefully constructed to quench the flame by absorbing the heat of the flame. This provides an extinguishing barrier to the ignited vapour mixture.
Under normal operating conditions the flame arrester permits a relatively free flow of gas or vapour through the piping system. If the mixture is ignited and the flame begins to travel back through the piping, the arrester will prohibit the flame from moving back to the gas source.
In-line Deflagration or Detonation Flame Arrester
The other major category consists of in-line flame arresters, also known as deflagration and detonation flame arresters. (Speaking non-technically, deflagration means rapid burning, and detonation means explosion.) These units are installed in pipes to prevent flames from passing.
Most in-line flame arrester applications are in systems which collect gases emitted by liquids and solids. These systems, commonly used in many industries, may be called vapor control systems. The gases which are vented to atmosphere or controlled via vapor control systems are typically flammable. If the conditions are such that ignition occurs, a flame inside or outside of the system could result, with the potential to do catastrophic damage.
One variety of vapor control systems is called vapor destruction systems. Included are elevated flare systems, enclosed flare systems, burner and catalytic incineration systems, and waste gas boilers.
Another type of vapor control system using in-line flame arresters is vapor recovery systems. Included here are vapor balancing, refrigeration, adsorption, absorption, and compression systems.
However, in-line flame arresters are sometimes used in end-of-line applications. For instance, an in-line unit may be mounted below a tank vent Valve on a liquid storage tank. The Valve reduces emissions and product loss, while the flame arrester protects the tank from flames in the atmosphere during venting of flammable gases.
- Variety of sizes and materials to suit a wide range of applications
- Suitable for hydrogen use with explosion groups IIB and IIC
- Replaceable elements
|Table 1. DFC Series Material Specifications|
|Ref||Description||Carbon Steel Models||Stainless Steel Models|
|1||Body||Carbon Steel||Stainless Steel|
|2||Gaskets||Klingersil C4400||Klingersil C4400|
|3||Fasteners||Carbon Steel||Stainless Steel|
|4||Element - Housing||Carbon Steel||Stainless Steel|
|4||Element - Core||Stainless Steel||Stainless Steel|
|4||Element - Capscrew||Stainless Steel||Stainless Steel|
THT Valve, one of the largest manufacturing factories in Tianjin, China, is committed and dedicated to provide quality, on-time products. For all your valves, valve parts and strainers, contact us at THT Valve. We pride ourselves on our knowledge, our service, our products, our industry certifications, and look forward to partnering with you to supply all your valve product requirements.