Weathermatic 30-11DSA Diaphragm Assembly 1.5 in 8200

Product Description

The WEATHERMATIC 30-11DSA is a replacement diaphragm assembly designed for 1.5-inch valve bodies in irrigation control systems. The diaphragm assembly is the core pressure-responsive component inside an automatic valve, flexing to open and close the water flow path in response to changes in pilot pressure. When a diaphragm fails, the valve loses the ability to shut off completely or open reliably. This assembly restores original valve function and is installed by irrigation technicians and licensed plumbers during routine valve rebuilds or field repairs.

This diaphragm assembly is sized for 1.5-inch valve configurations and is referenced for use with the 8200 series valve line. It is suited to commercial and residential landscape irrigation applications where automatic valve performance and reliable shutoff are required. A field rebuild using this assembly is a cost-effective alternative to full valve replacement in existing installations.

Key Features

• 1.5-inch size matches standard valve body port dimensions
• Designed for use with 8200 series valves
• Restores pressure-responsive open and close function
• Sold in single-unit increments for precise repair quantities

Compatibility

Designed as a replacement diaphragm assembly for WEATHERMATIC 8200 series 1.5-inch automatic irrigation valves.

Installation Notes

Installation is performed by irrigation technicians or licensed plumbers. Before disassembling the valve, shut off the upstream water supply and relieve any residual line pressure. Remove the valve bonnet carefully to avoid damaging seating surfaces, and inspect the seat ring and solenoid port for debris before installing the new diaphragm assembly. Follow all applicable local plumbing codes and manufacturer service documentation.

Technical Specifications

• Valve Size: 1.5 inches
• Series Compatibility: 8200
• UPC: 78053410918
• Order Increment: 1

Standard Information

• Brand: WEATHERMATIC
• Manufacturer Part Number: 30-11DSA