Weathermatic 49-10DSA Diaphragm Assembly 1.5 in Plastic Valve

Product Description

The WEATHERMATIC 49-10DSA is a replacement diaphragm assembly designed for 1.5-inch plastic irrigation control valves. The diaphragm is the primary flow-control element inside a solenoid-operated valve, flexing in response to pressure differential to open and close the water path. When a diaphragm tears, stiffens, or loses its seal, the valve fails to shut off fully or refuses to open. Replacing the assembly restores proper valve operation without the cost of replacing the full valve body. This part is installed by irrigation technicians and landscape contractors during routine maintenance or in response to valve failure.

This diaphragm assembly is sized for 1.5-inch plastic valve bodies in residential and light commercial irrigation systems. It is suited for in-ground sprinkler systems using zone control valves, typically installed in valve boxes at the head of each irrigation zone. Technicians replace diaphragm assemblies as a standard repair procedure when valves exhibit continuous flow, failure to actuate, or visible internal wear during inspection.

Key Features

• Sized for 1.5-inch plastic irrigation valve bodies
• Drop-in replacement assembly restores full valve function
• Designed for solenoid-operated diaphragm-style control valves
• Supports cost-effective valve repair without full valve replacement
• Order increment of 1 for single-unit purchasing flexibility

Compatibility

Designed as an OEM-style replacement diaphragm assembly for 1.5-inch WEATHERMATIC plastic irrigation control valves.

Installation Notes

Shut off the irrigation system water supply and depressurize the affected zone before disassembly. A licensed irrigator or qualified technician should perform valve repairs in accordance with local plumbing and irrigation codes. Remove the valve bonnet carefully to avoid damaging the solenoid or bonnet threads, and inspect the valve seat for debris or scoring before installing the new diaphragm assembly. Do not overtighten the bonnet upon reassembly, as plastic valve bodies are susceptible to thread damage.

Technical Specifications

• Valve Connection Size: 1.5 inches
• Valve Body Material: Plastic
• UPC: 78053410948
• Order Increment: 1

Standard Information

• Brand: WEATHERMATIC
• Manufacturer Part Number: 49-10DSA