Technical Products 13BT Winter Plug Blow-through Valve

Product Description

The TECHNICAL PRODUCTS 13BT is a winter plug with an integrated blow-through valve designed for 2.5-inch pipe applications. Winter plugs of this type are used to seal pool and spa plumbing lines during cold-weather shutdown, preventing water from sitting in exposed pipes where it can freeze and cause damage. The blow-through valve allows compressed air to pass through the plug during winterization, clearing water from the line before the plug seats fully. Pool service technicians install this fitting as part of a standard seasonal closing procedure.

This plug is intended for residential and light commercial pool and spa plumbing winterization. It fits 2.5-inch pipe openings commonly found on return lines, suction ports, and skimmer connections. Pool service professionals use it during fall closing when water must be blown out of lines and fittings sealed against freezing temperatures.

Key Features

• Integrated blow-through valve allows air purging of the line before final plug seating
• Designed for 2.5-inch pipe diameter openings
• Intended for seasonal winterization of pool and spa plumbing systems
• Single-unit package for individual line sealing

Compatibility

Designed as an OEM-style winterization fitting for 2.5-inch pool and spa plumbing return lines and suction ports.

Installation Notes

Installation is performed by a qualified pool service technician as part of a seasonal winterization procedure. Before installing any winter plug, shut off all pool equipment including pumps and heaters, and depressurize the plumbing system completely. Use an air compressor rated for pool blowout procedures to clear water from the line through the blow-through valve before seating the plug. Follow local codes and equipment manufacturer guidelines for winterization procedures.