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The VSR-SFT is designed for wet sprinkler systems that use pipe sizes of 1", 1-1/4", 1-1/2", or 2" and is equipped with a union to allow for installation in confined spaces. It features two single-pole, double-throw snap action switches and an adjustable, instantly recycling pneumatic retard . This ensures that the switches are activated only when a flow of 8-10 gallons per minute (30-38 liters per minute) or more occurs downstream of the device, and the flow must be sustained for a period long enough to activate the alarm. As the authorized distributor for Potter products in Saudi Arabia , El
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