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Leader in Silencing for Industry
Pressure Service
VANEC Silencers are designed for pressure systems up to but not including 15 PSIG at temperatures to 250° F*. For operating pressures of 15 PSIG or more, we recommend ASME Code construction as discussed below.
The temperature limit for standard carbon steel with polyester packing is 250° F. For carbon steel with fiberglass packing the typical limit is 650° F*. Please consult factory for over 650° F.*
VANEC standard vacuum pump inlet silencers may be used on vacuum service of up to 20” Hg, at temperatures not to exceed 250° F.* For higher vacuum conditions, we recommend ASME Code construction.
Standard industrial silencers are generally not individually leak tested and are not guaranteed leak tight without factory tests (available on request). If 100 percent leak-tight construction is essential, a 7 PSIG leak test is recommended.
Unless stated otherwise for a specific application and silencer design, we generally recommend ASME Code construction (Section VIII, Div. 1) for silencers for conditions of 15 PSIG pressure or more pressure and 20” Hg vacuum or deeper vacuum. We also recommend this construction for applications in which flammable or otherwise hazardous gas is involved. Acoustical absorption materials in standard ASME blower silencers are rated for temperatures not exceeding 325° F, while the vessels are rated for temperatures up to 650° F.
VANEC can provide silencers in carbon steel, stainless steels, aluminum, non-ferrous alloys, titanium, Hastelloy and fiberglass re-inforced plastics. Selection of materials of construction is the exclusive responsibility of the buyer.
Unless otherwise noted units are coated with a shop primer paint*. Special high temperature paints are available on request. No internal protection is provided unless specified by the buyer.
* Our standard shop primer paint may discolor at temperatures above 250° F if not top-coated.
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