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Ships within 48 hours · Estimated delivery Nov 8 - Nov 13
Specifications: Check Valve Type: Swing/Spring
Waterway 3721621-13 Pump 4HP 230V 2-Speed 2
5/8" Threaded Shaft
SP4025X30(NS) and also compatible with Hayward EcoStar pump models SP3400VSPVR
Features: Pipe Size: 1 1/2" FIP
Taylor 6028 Watergram Water Balance Calculator Specifications: Check Valve Type: Swing/SpringThe electronic version of the Taylor Watergram Water Balance Calculator is a water resistant, solar powered device that calculates the Saturation Index (SI) of pool and spa water and performs basic mathematical operations. Calculator is the size of a credit card. Features: Fits in a pocket or wallet. Solar powered no battery needed. Water resistant. Automatic shutoff. Automatic adjustment for cyanurate alkalinity. Fahrenheit and Celsius options. See