Description
The Xylem-McDonnell & Miller 310800 is a genuine replacement valve body gasket engineered specifically for the McDonnell & Miller 21 Series low-water cutoff and pump controller (Model Number 21-12). Designed to restore a secure, leak-free seal at the valve body, this gasket is an essential maintenance component for keeping hydronic boiler systems operating safely and efficiently.
Product Overview
McDonnell & Miller, a trusted Xylem brand, has been a cornerstone of boiler safety and control for decades. The 310800 gasket is manufactured to precise OEM specifications, ensuring a proper fit and dependable performance when servicing or rebuilding your 21 Series low-water cutoff valve.
Key Features
- Genuine Xylem-McDonnell & Miller OEM replacement part
- Designed specifically for the 21 Series low-water cutoff (Model 21-12)
- Provides a reliable, leak-free seal at the valve body
- Precision-cut to OEM dimensions for a drop-in fit
- Supports safe boiler operation by maintaining valve integrity
- Ideal for routine maintenance, service, and valve rebuilds
Compatibility
- McDonnell & Miller 21 Series Low-Water Cutoff / Pump Controller
- Model Number: 21-12
Why Choose OEM Replacement Parts?
Using genuine OEM gaskets like the 310800 ensures your McDonnell & Miller low-water cutoff performs as originally designed. Aftermarket substitutes may not meet the dimensional tolerances or material standards required for safe, long-term boiler operation. Trust Xylem-McDonnell & Miller parts to maintain the safety and reliability your system demands.
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