Noise in some safety and control valves generates levels above 150 dBA / dBC, a situation that is a concern for the technical operations and maintenance of plant. Our silencers reduce the noise generated during atmospheric expansions of steam or gas (vents) during the activation of valves, blow downs and ejectors. Noise exposure increasingly limits system and profitability productivity. Silencers are used to reduce noise in safety valves (PSV), Relief Valves (PRV), starter valves, blow valves, blow downs, ejectors, and discharge tanks.
To understand the noise limits or target in sound pressure level.
- The Flow conditions
- The Pressure conditions
- Silencer Connection
ANPAM ENGINEERING represents leading companies in the industry to complete our product line, offering complete solutions for high demanding security industrial installations.
Rarely is a more complex fabrication designed that also requires an outstanding corrosion resistant coating both internally and externally. The owners felt this complex fabrication had to have an extremely corrosion resistant coating due to its location in a coastal chemical plant. Multiple corrosive atmospheres could attack nearly every coating considered. These large Discharge silencers also had to have a corrosion resistant system that would provide a long corrosion free life. Hot-dip galvanizing was chosen as the best system. Internal baffles made coating with any other corrosion protection system nearly impossible. A full immersion dip in the galvanizing bath provided complete coverage at the most competitive price.
Every industry makes use of Safety Valves to protect systems against over pressure when these safety valves are opened to vent steam, gas or vapour it is often accompanied by excessive noise levels. Noise level as high as 150 to 160 dB (A) are not audible / unacceptable. It will affect the hearing level of employees and complaints may also be received from surrounding residential areas or factories. ANPAM ENGINEERING’s Acoustics Safety Valve Silencer will reduce such noise to environmentally acceptable levels. [Such as 85 dB (A) ] as specified by Indian pollution control boards.
The following process values are required to make the appropriate selection.
- Medium temperature
- Pressure before the valve and after the valve
- Sound level required
- Connection size