Sloan 3378020 Diaphragm Closet Flushometer Repair Kit

Product Description

The SLOAN 3378020 is a diaphragm assembly for closet flushometers, supplied with a molded disc and A-212 refill head. The diaphragm is the core internal component that regulates water flow and controls flush volume in commercial-grade flushometer valves. When a diaphragm fails, the valve may run continuously, fail to flush, or deliver inconsistent flush cycles. This assembly provides the components needed to return the valve to proper operation. At 0.053 pounds, it is a compact service part carried as a standard stock item on commercial plumbing service calls.

This diaphragm assembly is suited for commercial and institutional restroom applications where SLOAN closet flushometers are installed. Typical locations include office buildings, schools, healthcare facilities, and other high-traffic restrooms. The A-212 refill head is a key detail for matching the correct diaphragm assembly to the valve model in service. Installation is performed by a licensed plumber or qualified plumbing service technician during routine valve maintenance or repair.

Key Features

• Includes molded disc for consistent diaphragm seating and reliable flush cycle control
• Paired A-212 refill head ensures correct refill rate for closet flushometer applications
• Lightweight construction at 0.053 pounds for easy handling and transport
• Designed as a direct-replacement service part to restore flushometer valve performance
• Compact form factor suits standard commercial flushometer valve bodies

Compatibility

Designed as an OEM-style replacement diaphragm assembly for SLOAN closet flushometer valves requiring an A-212 refill head configuration. Verify the refill head designation on the existing valve diaphragm before ordering to confirm fitment.

Installation Notes

Installation is typically performed by a licensed plumber. Shut off the water supply to the flushometer valve and relieve line pressure before disassembling the valve body. Remove the cover from the flushometer, extract the worn diaphragm assembly, and install the replacement, ensuring the molded disc and refill head are properly seated before reassembling. Follow applicable local plumbing codes and the valve manufacturer service instructions for torque and reassembly sequence.

Technical Specifications

• Weight: 0.053 pounds
• UPC: 671254339149

Standard Information

• Brand: SLOAN
• Manufacturer Part Number: 3378020