![]() ![]() ![]() At this point you have two single vents installed. If the ball-check fails open, the dual vent will no longer function as designed and will no longer provide any level of redundancy. With the large amounts of deposits typically found in fire sprinkler systems, a ball-check installed in the horizontal position will likely become fouled and cease to function correctly. This orientation would also help in preventing any solid deposits in the system water from fouling the rubber seat and compromising achieving a proper seal. Ball-checks are typically recommended to be installed in the vertical position to allow gravity to assist in unseating the ball when the system is depressurized. The idea is that if the primary vent was to fail and allow water to pass onto the secondary vent, the ball-check would allow this water to drain back to the system piping when it was drained. ![]() A ball-check uses a plastic ball and a rubber seat to stop flow in one direction while allowing flow in the other. The system connection to the secondary vent of the South-Tek Dual Vent O 2-Release System™ uses a ball-check in the horizontal position to prevent system air/water from directly reaching the secondary vent. The device ships as one pre-assembled and manufacturer tested assembly, ensuring proper operation and eliminating the need for any additional onsite assembly.Ģ. The ECS Automatic Air Vent requires only a single connection to the fire sprinkler system, reducing material and labor cost associated with the installation. The requirement to install the connection between the two vents on-site eliminates the possibility of testing the full unit prior to shipping and increases the potential for improper installation. This design requires both additional components and labor for proper install, increasing the turn-key price to the end user. The South-Tek Dual Vent O 2-Release System™ device ships as two (2) distinct components and requires two connections to the fire sprinkler system. 7.1.5 Air Venting – A single air vent with a connection conforming to 8.16.6 shall be provided on each wet pipe system utilizing metallic pipe.Ĩ.16.6 Air Venting – The vent required by 7.1.5 shall be located near a high point in the system to allow air to be removed from that portion of the system by one of the following methods: Manual valve, minimum 1/2" size, Automatic air vent, Other approved means.Ī Closer Look at the ECS Automatic Air Vent (PAV-W) versus the South-Tek Systems Dual Vent O 2-Release System™*ġ. ![]()
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