Separator Silencers Separator Silencers UIVSA GY VIMTA
Vacuum ump Systems Separator-silencers are used to remove liquid from gas vacuum systems using either liquid-sealed rotary positive blowers or liquid ring vacuum pumps (ig. ). Separator-silencers may be required for both the (vacuum) and the discharge (atmospheric) of a vacuum system. nly the most stringent acoustical environments require significant silencing. An separator provides corrosion protection for the vacuum pump by removing most, if not all, of the process liquid before it enters the vacuum pump. The vacuum pump or blower discharge is normally extremely noisy and requires a high-performance separator-silencer. General Information Vacuum ump iquid Separator-Silencers.. Vacuum ump iquid otary Separator-Silencers ositive Blower Silencers peration and Capacity When a vacuum pump starts operating at normal atmospheric pressure, system pressure drop and power requirements are at their maximum. As the vacuum pump continues to evacuate the system, the pressure decreases so the system pressure losses and power requirements decrease. The volume in actual cubic feet per minute (ACM) stays essentially constant throughout system operation, but because of decreasing pressure, the discharge volume decreases until normal operating conditions are reached. Vacuum pump capacities at operating conditions are expressed by the volume of air and the amount that the pressure has been reduced below atmospheric pressure. Thus, vacuum pump capacities are stated in ACM at a relative vacuum, usually measured in inches of mercury (Hg). iquid Separation erformance Separator-silencers meet their rated liquid separation efficiency at a nozzle velocity of,00 ft/min. At lower velocities their performance improves. At higher velocities their efficiency decreases. The nozzle velocity is the air velocity in the or discharge nozzle and is equal to the actual volume rate (ACM) divided by the nozzle area. Since the volume rate is nearly constant during normal vacuum pump operation, the separator-silencer should be sized so the velocity does not exceed,00 ft/min during all phases of operation (Table, page.). The discharge rate decreases from startup to normal operation, and in some applications it may be acceptable to exceed a velocity of,00 ft/min during startup. If it is not acceptable to discharge liquid during startup, the velocity must be reduced. If some liquid bypass is allowed during startup, the selection of the discharge separator-silencer should be based on pressure drop. Inlet and discharge separator-silencers require drain systems to remove the liquid. These systems (both and discharge) must provide an adequate drain sealing system or liquid level to offset the vacuum on the side and prevent blowout on the discharge side. See Tables and on the following page for liquid removal data. separator-silencer vacuum pump liquid air discharge separatorsilencer igure This is an example of a vacuum pump and liquid removal system. Air and liquid enter the separator-silencer during processing (). rocess liquid is removed (), and air enters the vacuum pump (). The pump takes in seal liquid (). Air and seal liquid are pumped into the discharge separator-silencer (), which removes the liquid () and sends the air into the atmosphere ().
. otary Vacuum ositive ump iquid Blower Separator-Silencers Silencers Application Guide Vacuum ump iquid Separator-Silencers Technical etails Separator-silencer pressure drop depends on velocity and pressure. In a vacuum system, pressure drop is at a maximum during startup. Under normal atmospheric conditions, the pressure drop at startup, for either an or discharge separator-silencer, is calculated from the following equation: c ACM p V 00 c ACM = volume rate c = separator-silencer coefficient (see Table ) = pressure drop in inches of water p =separator-silencer size (nozzle diameter) in inches V =velocity in ft/min If the startup pressure drop is too great, use the given for a lower relative vacuum, or calculate a separator-silencer size from this equation: c p 0. ACM c =separator-silencer coefficient = desired pressure drop in inches of water p =separator-silencer size (nozzle diameter) in inches Maximum Capacity (Inlet ACM) for ull iquid Separation fficiency at perating Vacuum ominal perating Vacuum, Inches of Hg Size 0* 0 ** ¹ ₂ ¹ ₂ ¹ ₂ 0 0 0 0 0 0 0 0 0 0,00,0,000,00,00,00,00,000,00,00 0,00,00,000 00,00,,00,0,00,0,0,,0 0,0,0,0,0 0 0,,0,0,,0,0,00,00,000,00,000 0,00,00 0,00 0,00,0,0,00,0,00,00,00,0,0,00 0,00,00,0 0,00,0,,0,0,00,00,00,00 0,0,00,00 0,00,000,00 0 0,,0,0,0,0,00,000,00,00,00,00,00,0,00 0,00,00,00,0,0,0,0,00,0,00,0,00,00,00,00,00,000,00 * This column is used for separator-silencers and discharge separator-silencers with no liquid bypass during startup. ** Capacity at operating vacuum greater than 0" Hg is limited by startup conditions. Maximum iquid low in GM for Various rain Sizes* rain Size () ¹ ₂ ¹ ₂ ¹ ₂ s UWVS, UWSI, WVS, WSI 0 0 0 0 00 00 0 00,00 s UVCS, UVS VCS, VS 0 0 0 0 0 00 0,000 * Values are based on gravity drain and may be larger with a positive drainage system. ressure rop Coefficients and Separation fficiency ressure rop Coefficient (C) Separation fficiency WVS/UWVS.0 % WSI/UWSI.0 0% VCS/UVCS.0 % VS/UVS. >%
. otary Vacuum ositive ump iquid Blower Separator-Silencers Silencers The WVS and low profile UWVS liquid separator-silencers provide corrosion protection for vacuum pumps by removing most of the process liquid before it enters the vacuum pump. These separators are best suited for full vacuum conditions under critical applications which require silencing. xterior surfaces receive a shop coat of rust inhibitive primer. Insertion oss, db Typical Insertion oss 0 0 0 0. 0 00 ctave Band Center requency, Hz WVS/UWVS Series Inlet iquid Separator-Silencers.. Vacuum ump iquid otary Separator-Silencers ositive Blower Silencers WVS Series UWVS Series Top View Side View WVS- 0 WVS art umber -#-AA 0 UWVS- 0 UWVS art umber U-#-AA (nom.) (nom.) 0 0 ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ UWVS * Capacities for larger sizes available on request. ** If maximum gas is not exceeded for a given separator size, liquid GM may exceed nominal capacity shown, up to the capacity of the next larger separator. ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ 0 Weight ¹ ₂ ⁵ ₈ ³ ₄ ¹ ₂ ¹ ₈ 0 ³ ₄ ¹ ₂ ¹ ₄ 0 0,0 0 ⁹ ₁₆,0 ⁷ ₁₆, ¹ ₈, 0 ⁷ ₈, ⁵ ₈ 0,0 ated Capacity* Max. ACM at Vacuum (Blower Inlet) 0 0,00,0,00,00,000,00,000,000,000,000 iquid GM** 0 0 00 00 00 00 00 00,000,00
. Typical Insertion oss The WSI and low profile UWSI liquid separator-silencers provide corrosion protection. 0 for vacuum pumps by removing most of the process liquid before it enters the vacuum 0 pump. These separators are best suited for full 0 vacuum conditions under critical applications, which require silencing. The WSI models have a unique profile and larger pipe sizes than 0. 0 00 the WVS series. xterior surfaces receive a ctave Band Center requency, Hz shop coat of rust inhibitive primer. otary Vacuum ositive ump iquid Blower Separator-Silencers Silencers WSI/UWSI Series Inlet iquid Separator-Silencers Insertion oss, db Top View WSI Series UWSI Series Side View WSI- 0 0 WSI art umber -#-AA 0 0 0 0 0 0 UWSI- 0 0 UWSI art umber U-#-AA (nom.) 0 0 0 0 0 0 0 0 0 0 ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ 0 0 0 0 ¹ ₄ ¹ ₂ ¹ ₂ 0¹ ₂ 0¹ ₂ ¹ ₂ * Capacities for larger sizes available on request. ** If maximum gas is not exceeded for a given separator size, liquid GM may exceed nominal capacity shown, up to the capacity of the next larger separator. UWSI 0 (nom.) Weight 0 ³ ₄ ³ ₁₆ ¹¹ ₁₆ ¹¹ ₁₆ ⁵ ₈ ⁵ ₈ 0 ¹ ₂ ¹ ₂ 0 0 0 0 0,00,0,,,,, ated Capacity* Max. ACM at Vacuum (Blower Inlet) 0 0,00,0,00,00,000,00,000,000,000,000,000,000,000 iquid GM** 0 0 00 00 00 00 00 00,000,00,00,00,00
. Typical Insertion oss.. otary ositive Blower Silencers The VCS and low profile UVCS models provide high performance liquid separation and noise attenuation. When an separator is not installed, the discharge separator may need to be oversized. xterior surfaces receive a shop coat of rust inhibitive primer. Insertion oss, db 0 0 0 0. 0 00 ctave Band Center requency, Hz VCS/UVCS Series ischarge iquid Separator-Silencers Vacuum ump iquid otary Separator-Silencers ositive Blower Silencers Side View Top View VCS Series UVCS Series ipe sizes " ¹ ₂" ipe sizes " " ipe sizes " ¹ ₂" ipe sizes " " VCS- ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ art umber -#-AA 0 0 0 0 0 0 0 UVCS- ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ art umber U-#-AA 0 0 0 0 0 0 0 All models use a pipe thread connection (MT) for the liquid outlet (). Sizes " ¹ ₂" are standard with male pipe thread connection (MT). Sizes " " are standard with 0# ASI drilled plate flanges. ow rofile (nom.) ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ 0 ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ 0 ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ (nom.) Weight ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ¹ ₂ ¹ ₂ 0¹ ₂ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ³ ₄ ³ ₄ ³ ₄ ³ ₃₂ ¹ ₁₆ ³ ₄ ¹¹ ₁₆ ⁵ ₈ ⁹ ₁₆ ¹ ₂ ⁷ ₁₆ ⁵ ₁₆ ³ ₁₆ ¹⁵ ₁₆ ¹¹ ₁₆ ⁷ ₁₆ ¹ ₄ ⁷ ₈ ¹ ₂ ¹ ₂ ¹ ₂ 0 0 0 00 0,0
. Typical Insertion oss otary Vacuum ositive ump iquid Blower Separator-Silencers Silencers VS/UVS Series ischarge iquid Separator-Silencers Insertion oss, db 0 0 0 0. 0 00 ctave Band Center requency, Hz The VS and low profile UVS models offer better attenuation than the VCS and UVCS models. or pipe sizes " ", the VS has a side liquid outlet, while the VCS has a vertical liquid outlet. xterior surfaces receive a shop coat of rust inhibitive primer. VS Series UVS Series Side View Top View ipe sizes " " ipe sizes ¹ ₂" " ipe sizes " " ipe sizes ¹ ₂" " VS- ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ art umber -#-AA 0 0 0 0 0 0 0 UVS- ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ art umber U-#-AA 0 0 0 0 0 0 0 All models use a pipe thread connection (MT) for the liquid outlet (). Sizes " ¹ ₂" are standard with male pipe thread connection (MT). Sizes " " are standard with 0# ASI drilled plate flanges. ow rofile (nom.) ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ 0 ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ 0³ ₄ 0³ ₄ ⁷ ₈ ¹ ₂ ³ ₈ ¹ ₂ ³ ₄ 0¹ ₄ ¹ ₄ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ (nom.) Weight ¹ ₄ ¹ ₄ ³ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ¹ ₂ 0 ¹ ₄ ¹ ₄ ¹⁹ ₃₂ ¹⁹ ₃₂ ³ ₆₄ ¹³ ₁₆ ¹³ ₁₆ ⁹ ₁₆ ⁹ ₁₆ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ³ ₄ ³ ₄ ³ ₄ ¹ ₁₆ ¹ ₁₆ ³ ₄ ¹¹ ₁₆ ⁵ ₈ ⁹ ₁₆ ¹ ₂ ⁷ ₁₆ ⁵ ₁₆ ³ ₁₆ ¹⁵ ₁₆ ¹¹ ₁₆ ⁷ ₁₆ ¹ ₄ ⁷ ₈ ¹ ₂ ¹ ₂ ¹ ₂ 0 0 0 0 0,0,,
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