CMP 25802-210-000 2″ Socket × Socket Unionized Ball Valve

The CMP 25802-210-000 is a 2-inch ball valve with a union connection, built for pool and spa plumbing systems. It provides reliable manual shut-off of water flow, and the union fitting makes future maintenance, service, or equipment swaps easier without having to cut pipe.

Key Features

• 2″ socket × socket construction — fits standard 2″ PVC plumbing lines.
• Unionized design — allows easy disassembly and reconnection for maintenance or equipment changes.
• Manual ball-valve operation — simple on/off flow control for suction, return, or bypass lines.
• Pool-rated PVC construction — resistant to pool chemicals and suitable for long-term use.

Specifications

• Manufacturer: CMP (Custom Molded Products)
• Part Number: 25802-210-000
• Valve Type: 2-inch ball valve, socket ends, unionized
• Connection Style: Socket (slip-fit) × Socket with union nut for easy disassembly
• Material: PVC (pool-rated thermoplastic)
• Typical Application: Pool or spa suction/return plumbing for shut-off or flow diversion

Common Uses

• Isolating pump suction or return lines for service, winterizing, or repairs.
• Bypassing equipment such as heaters, chlorinators, or salt-systems for maintenance or seasonal shutdown.
• Controlling flow to separate circuit loops — e.g., pool vs spa, heater loop, solar loop, etc.

Installation & Maintenance Tips

• Solvent-weld the socket ends to PVC pipe using proper PVC primer and cement. Allow full cure before pressurizing.
• When tightening the union nut, hand-tighten firmly — avoid over-tightening to prevent stress on the valve body.
• Operate the valve at least once or twice per season to ensure smooth operation and prevent sticking.
• Inspect the union flange and O-ring periodically for leaks; replace the O-ring if chemical damage or wear is evident.