Manufacturers

McDonnell Miller Relief Valve 181220

(image for) McDonnell Miller Relief Valve 181220

McDonnell Miller Series 250 relief valve P/N 181220

3/4" NPT 15 PSI 515,000 BTUH 250 F

Used to protect pressure vessels such as boiler and tank aoolications

Meets ASME Pressure Vessel and Boiler Code section IV

Bronze body and seat

Genuine McDonnell Miller part

Shipping rate for continental United States

$75.00

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Model: 181220
Manufactured by: McDonnell Miller

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Verified Buyer

August 9, 2025 by Arthur E. (United States)

“Been buying filters here for years. Price went up a little and when I checked around I found Shortys was still reasonable and we have had great service from them.”

Verified Buyer

August 9, 2025 by Ed C. (FL, United States)

“Nice and easy, but the cost for this item keeps rising - a lot!”

Verified Buyer

August 7, 2025 by RB (IN, United States)

“EZ and quick!”

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Refunds & Returns

Items that are returned must be in original package and in new condition. We are not responsible for return shipping. They must be returned within 30 days of the purchase date. Any returns after 30 days will not be accepted. Refunds takes 4-7 days to be processed and appear back on the card used. A 25% restocking charge will be deducted from the original purchase price. If an item has been installed or altered in any way no refund will be processed. If you receive an item that is damaged please let us know ASAP so we can assist you.

Shipping Rate For Continental US Only. Please contact us for rates to Canada before ordering.

About Us

Welcome to Shortys HVAC Supplies. We are located on the South West side of Indianapolis, IN. Our purpose is to provide Original Equipment Manufacturer parts for the repair and maintenance upkeep of furnaces, air conditioners, ventilation systems and pumps to the general public as well as contractors and commercial building maintenance staff.

We sell brand new OEM parts for most manufacturers such as Carrier, Bryant, Payne, Lennox, Armstrong Aire, Ducane, Trane, American Standard, Heil, Tempstar, Nordyne, Goodman, Rheem, Ruud, York, Coleman, Modine, Reznor, Armstrong Pumps, Bell and Gossett pumps, Weil McLain, Lochinvar, McDonnell Miller, Hoffman Specialties, Manitowoc, Scottsman and we strive to make sure you get the correct part for your application.

Give us a call with the information from your equipment nameplate and we will do our best to help. We can be reached at our local phone number 317-821-8770, Toll Free 877-821-8770 or by fax at 317-821-8772. Our physical address is 7720 S Mooresville Rd in West Newton , IN 46183. Business hours are 8-5 EST M-F. Prior to making repairs please consult your manufacturers instructions and follow all safety precautions. Improper repairs can lead to equipment damage or personal injury or death. If you are unsure of your ability please call a professional company.

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Company Information

Shortys HVAC Supplies LLC
877-821-8770
7720 S Mooresville RD
PO Box 146
West Newton, IN 46183
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Trusted

Arthur E.

08/09/2025

Been buying filters here for years. Price went up a little and when I checked around I found Shortys was still reasonable and we have had great service from them.

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