Vac-AlertTM Model VA-2000 SVRS  Unit Reacts
In Less Than A  Second To  Quickly Release  
Dangerous Pump  Suction Vacuum.
A Totally Mechanical, Non-Electric Safety
System, The VA-2000 SVRS Is  Easy To
Install, Adjust And Test.
Vac-Alert's Fail Safe Design Is
Manufactured With Only Engineered
Plastics And Type 316 Stainless Steel For
Long-Life And Reliable Service.
The VA-2000 SVRS Provides A Critical
Layer Of Protection Against Body Or Limb
Drain Suction Entrapment.
Tests Conducted By Independent, Third
Party Laboratory Demonstrate That
Vac-Alert's Model VA-2000 Meets Or
Exceeds The Performance Requirements
Of ASME/ANSI A112.19.17 – Manufactured
Safety Vacuum Release Systems.
The VA-2000 SVRS Is Backed By A 3-Year
Limited Manufacturer's Warranty.

The Vac-alertTM Model VA-2000S is a Safety Vacuum Release System (SVRS) designed for submerged suction applications. Submerged suction in this case applies to all applications where the circulating pump suction is below the level of the pool water surface. This unit incorporates a 0.375” diameter orifice opening installed below the surge tube section. This orifice opening is sized to provide a limited amount of pump start-up surge protection, while at the same time allowing enough air into the piping system to insure dissipation of the dynamic suction force caused by the circulating pump.

The Model VA-2000S SVRS unit also utilizes a check valve assembly equipped with a 0.25 pound spring and a non-vented poppet (no poppet disc or hole through the poppet). This check valve assembly utilizes a light duty spring to minimize the sealing force of the check valve. The non-vented poppet insures that water from the circulating system, under a positive hydrostatic head condition, does not migrate up into the SVRS

The Vac-alertTM Model VA-2000L is a Safety Vacuum Release System (SVRS) designed for suction lift applications. Suction lift in this case applies to all applications where the circulating pump suction is either at or above the level of the pool water surface. This unit incorporates a 0.170” diameter orifice opening installed below the surge tube section. This orifice opening is sized to prevent nuisance tripping of the SVRS unit caused by high vacuum surges typical of many pump start-up conditions.

The Model VA-2000L SVRS unit also utilizes a check valve assembly equipped with a 3.5 pound spring, a poppet disc and a one-way (up only) vented poppet This check valve assembly permits continued water flow to the circulating pump while the SVRS unit is in the open or vented position. The 3.5 pound spring further compressed by the poppet disc, creates enough sealing force within the check valve to allow partial water flow to the circulating pump for suction lifts up to 3.5 feet. This is critical to the elimination of circulating pump damage that can be caused by a sustained dry-running condition. The one-way vented poppet allows the surge chamber to be internally recharged when the circulating pump is turned off.