Waterway Vacuum Break Inlet Spa Vent [3/4" SB] [Black] (640-3751V)

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Waterway Vacuum Break Inlet Spa Vent [3/4" SB] [Black] is a suction fitting replacement from Waterway Plastics for spa and pool suction plumbing. It is intended for repair, refurbi shment, or like-for-like replacement work where matching the original plumbing size, finish, body style, and equipment configuration matters. The listed part number is 640-3751V. This product is especially useful when an existing component has become worn, cracked, faded, restricted, loose, or difficult to service, and it helps keep the system easier to maintain without changing the overall equipment layout.Before ordering, compare the complete product title, part number, dimensions, finish, connection type, and installation style against the part being replaced. Key details from the product listing include 3/4" SB, Black. For drain, suction, heater, electrical, and control-system parts, installation should follow the equipment manufacturer’s instructions and all applicable safety requirements. Using the correct replacement helps reduce avoidable leaks, fit issues, electrical mismatches, water-flow problems, and unnecessary downtime during pool, spa, or bath equipment service. Replacement suction for compatible Waterway Plastics equipment Match by part number 640-3751V, size, color, and connection style before installation Helpful for restoring proper fit, flow, sealing, appearance, or equipment operation Suitable for service technicians, maintenance teams, and experienced DIY repair projects Designed for pool, spa, or bath applications where exact compatibility is required Show more