PVC Double Union Diaphragm Valve – Threaded Socket Ends, ½" to 2"

The PVC Double Union Diaphragm Valve (Threaded Socket) is a PVC flow-control valve with double-union end connections and BSP female-threaded socket ends. The diaphragm design allows both full shut-off and flow regulation. The double-union connections allow the valve to be disconnected from threaded pipe fittings without disturbing the rest of the installation. Available in ½" to 2" BSP sizes. Suitable for irrigation systems, water reticulation, and chemical applications using threaded PVC fittings.

• Connection type: BSP female-threaded socket ends
• End connections: Double union
• Valve type: Diaphragm (shut-off and flow regulation)
• Sizes: ½", ¾", 1", 1¼", 1½" and more (see variants)
• Material: PVC body with EPDM diaphragm seal

Key Features

• Double union connections – valve can be removed from threaded fittings without cutting pipe
• Diaphragm design – allows flow regulation as well as full shut-off
• BSP female-threaded socket ends – screws onto standard male BSP fittings or nipples
• PVC body with EPDM diaphragm – corrosion-resistant for water and irrigation use

Typical Applications

• Flow control and isolation in threaded PVC irrigation systems
• Pump installations and chemical dosing systems
• Commercial and agricultural water distribution where flow regulation is required

Technical Specifications

What's Included

• 1 x PVC Double Union Diaphragm Valve – Threaded Socket (selected size)

Installation & Compatibility Notes

Select the valve size to match the BSP thread size of your fittings. Confirm system operating pressure is within the valve's rated range. The double union connections allow the valve body to be removed for servicing without disturbing the surrounding pipework.

Warranty & Support

This product is supplied with the applicable manufacturer or supplier warranty. Contact Zisabo if you need assistance selecting the correct valve for your system.