Forgot Your Password?

Enter your e-mail address below to have your password reset. You will receive an e-mail with a new temporary password in it.

Your new password is on its way. If you have problems accessing your account, please contact us at 1-888-757-4774 and we'll help you out.

I'm sorry, your e-mail was not found in our system.

If you think this is a mistake, please contact customer service at 1-888-757-4774 or via e-mail here.

Returning Customers – Sign In

Checkout as a Guest

You will have the option to create an account on the order confirmation page.

Home
Radiant Heat & Heating Supplies
Heating Supplies
Low Water Cutoffs
Mcdonnell & Miller Low …

Zoom

159S-HD, Head Assembly for Combination Low Water Cutoff & Pump Controller w/ 2 SPST switches

SKU:178902

Brand: Mcdonnell & Miller

159S-HD, Head Assembly for Combination Low Water Cutoff & Pump Controller w/ 2 SPST switches
Qty	Price
	$440.95 / each

In Stock! Ships in 24-48 Hours

Order Today, Receive Mon. May 27 Order Today, Receive Tue. May 28 Order Today, Receive Tue. May 28

2 Available

Returns & Exchanges

We accept returns of any unused and unopened merchandise within 5 days of receipt and accept returns of defective merchandise within 14 days of receipt. All returns must be accompanied by a Return Goods Authorization, which may be obtained by contacting a customer service representative either by phone or by e-mail. All manufacturer warranties are honored and claims should be made through PexSupply.com.

See full Return Policy.

Shipping Information

Add this item to your cart to calculate shipping cost.

The entire staff at PexSupply is committed to doing everything we can to ship your order out accurately and as quickly as possible. Most orders ship within 1-3 business days and expedited orders go out the same day when placed before 1:00pm EST. If an item is back ordered for any reason, you will be notified via e-mail. Please note in the special instructions at checkout if you need receive your order by a specific date.

See full Shipping Policy.

Lowest Price Guarantee

PexSupply.com is committed to providing you with the highest quality products at the lowest prices available. We are committed to competitive prices and will honor our Low Price Guarantee if you find an identical item at a lower price.

For complete information on our low price guarantee, go here.

MAP Price

There is a Minimum Advertised Price (MAP) allowed by the manufacturer on this product. Add item to cart for lowest price.

Security 100% Guaranteed

We are dedicated to protecting your order information. Because of this, all personal data that is transmitted through our site is encrypted using SSL or "Secure Socket Layer" technology which encrypts your order information to avoid the decoding of your information by anyone other than PexSupply.

At PexSupply.com, we are committed to protecting your privacy. This means that we will not distribute, sell or rent your name or personal information about you to any third party without your permission.

For complete safe shopping information, go here.

Privacy

Your privacy is of great concern to PexSupply. We use the information you provide to process your order and to ensure that your experience on our site is as enjoyable and efficient as possible. Our primary focus and greatest concern is you, our customer. We respect your privacy and therefore do not sell, rent or loan any of your personal information to any third party.

We are committed to protecting your privacy. We use the information that we collect about you to process your orders and to provide a personalized shopping environment. When you purchase products from PexSupply.com or register for any PexSupply.com services, we automatically place you on our list to receive e-mail updates about special offers, new products, and new services.

For our complete privacy policy information, go here.

CVV Code

A credit card Identification Number is an added safeguard for your credit card purchases. Depending on the type of credit card you use, it is the 3- or 4-digit number printed on the back or front of your credit card. For most online credit card purchases from us, the Identification Number is required information.

MasterCard: Your identification number is the 3-digit number found on the back of your credit card near the signature panel.

Visa: Your identification number is the 3-digit number found on the back of your credit card near the signature panel.

American Express: Your identification number is the 4-digit number found on the far right on the front of your credit card.

Location of CVV code on various credit cards

Overview
Product Reviews
Q & A
Manuals
Videos

Specs

Product Specs
Application:	Replacement Part
Switch:	2 SPST
Accessory For:	159 Series
Features:	Snap Switch

Description for Mcdonnell & Miller 178902

For commercial and industrial low or high pressure boiler applications

For boilers of any steaming capacity

Monel bellows provides corrosion resistance

Snap action switches for high temperature service

- 1 Single pole, single throw switch for pump control
- 1 Single pole, double throw switch for low water cut-off and alarm actuation

Optional features

- Manual reset
- 2 Single pole, single throw switches
- 2 Single pole, double throw switches
- Float block
- BSPT threads

Maximum pressure 150 psi (10.5 kg/cm2)

McDonnell & Miller Low Water Cutoffs/Pump Controllers Series 150S