Xylem 340700 Strainer Basket Assembly for 51S 53 851S

Product Description

The XYLEM 340700 is a replacement strainer basket assembly, complete with gasket, designed for use with McDonnell Miller strainer and valve assembly housings. Sold under the McDonnell Miller model designation SA37-38, this component provides the filtration element inside the strainer housing, capturing debris before it reaches downstream controls and valves. It is a direct OEM-style replacement part installed by licensed plumbers and HVAC technicians during routine maintenance or when servicing low-water cutoff and flow control assemblies on hydronic heating systems.

This assembly is used in residential and light commercial hydronic heating applications where McDonnell Miller flow control and low-water cutoff controls are installed. The strainer basket keeps system water clean and protects the internal components of the control from particulate fouling. Typical install scenarios include boiler system maintenance, control servicing, and strainer basket replacement intervals as part of a seasonal tune-up.

Key Features

• Replacement strainer basket assembly with included gasket for a complete service kit
• Designed to fit directly into McDonnell Miller strainer and valve assembly housings
• Compatible with model numbers 51S, 51S-2, 53, 53-2, and 851S controls
• OEM-style fitment eliminates the need to source the basket and gasket separately
• Maintains proper filtration function within hydronic heating control assemblies

Compatibility

Designed as a direct replacement strainer basket assembly for use with McDonnell Miller strainer and valve assembly housings on model numbers 51S, 51S-2, 53, 53-2, and 851S controls.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC technician. Shut off the boiler and allow the system to cool and depressurize before opening any strainer housing. Remove the housing cap, extract the old basket and gasket, inspect the housing for debris or corrosion, and seat the new assembly securely before reassembling. Follow applicable local plumbing codes and the control manufacturer guidelines when servicing hydronic system components.

Technical Specifications

• Model Designation: SA37-38
• Includes: Strainer basket and gasket

Standard Information

• Brand: XYLEM
• Manufacturer Part Number: 340700