ALL CATEGORIES

SHOP BY INDUSTRY

DEALS

EXCLUSIVE BRANDS

NEW PRODUCTS

RESELLERS

KNOWLEDGE CENTER

For residential, commercial, and industrial applications. Heavy duty. Includes No. 2 switch. Optional manual reset available. Maximum boiler pressure 50 psi (3. 5 kg/cm2). Use with TC-4 on hot water systems. <b>Made in the USA</b>.<br><br>

McDonnell & Miller Series 63 Low Water Cut-off 63-M, Mechanical with Manual Reset

series-63-low-water-cut-off-63-m-mechanical-with-manual-reset

<li><p class='canada-shop'>You are shopping on <span>globalIndustrial.ca</span></p><p class='canada-prices'>All prices in $ CA.</p></li>

Clearance Items

Customer Also Viewed

<div class='exclusiveOffersContainer' style='text-align:center;line-height:1.2;font-size:14px;letter-spacing:0.5px;color:white;position:sticky;top:0;z-index:2;'><div class='marketingBannerRect' style='background-color: #d41e3d;'><span><span><div class='exclusiveOffersOn'><span id='exclOffrId' style='color:#fff;font-weight:500;'><p class='current-offer-anchor' style='color:#fff;font-weight:500;'>DUE TO HURRICANE IAN AND SEVERE WEATHER CONDITIONS, PICKUP AND DELIVERY OF ORDERS IN FLORIDA COULD BE DELAYED.</p></span></div></span></span></div></div>

<li class='language-change-site'><a href='https://www.globalindustrial.com'>Change</a>&nbsp;to globalindustrial.com</li>

with 5% off when you use your Global Industrial Credit Card.

 suggested payments with 6 month special financing OR 

<p><a href="/contactUs">Customer Support</a></p>

<p><a href="/account/browse-history">Browse History</a></p>