<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[MHR Inc]]></title><description><![CDATA[MHR is dedicated to the Polyurethane Industry, designing, building, and repairing Mixheads, Pumps, and full RIM Machines.]]></description><link>https://www.mhr-inc.com/case-studies</link><generator>RSS for Node</generator><lastBuildDate>Sun, 21 Jun 2026 14:31:42 GMT</lastBuildDate><atom:link href="https://rdeemter0.wixsite.com/mhr-inc/blog-feed.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[Case Study: Clamp-on Flowmeter]]></title><description><![CDATA[The Problem: MHR was recently involved in troubleshooting a RIM machine that was showing erratic flow rates on the ISO line. (It's always the ISO line, isn't it?). The machine is set up with a variable speed frequency drive that controls the motor speed, and hence the pump flowrate, based on the measured flowrate and the desired target flowrate. The actual flowrate was varying significantly due to the inaccurate readings from the flowmeter. The flowmeter in question was a gear style...]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/post/case-study-clamp-on-flowmeter</link><guid isPermaLink="false">69d7a23ffc7a52acb909eee2</guid><pubDate>Thu, 09 Apr 2026 14:07:26 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/95e564_4f731f4b947b404295663b1f26f463e2~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item><item><title><![CDATA[Calibration Procedures for a Two-Stream System: Methodology, Pros, and Cons]]></title><description><![CDATA[Calibrating two streams at a time offers major advantages, and many RIM manufacturers are not aware it is possible to calibrate with both streams running at the same time.]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/post/calibration-procedures-for-a-two-stream-system-methodology-pros-and-cons</link><guid isPermaLink="false">69aaf349191ecc36dbbd23a9</guid><pubDate>Wed, 11 Mar 2026 18:08:41 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/95e564_2cadbd47fe3145aa8566d3c492ad3340~mv2.png/v1/fit/w_1000,h_559,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item><item><title><![CDATA[Understanding Orifice Sizing for Polyurethane Processing Equipment]]></title><description><![CDATA[The Importance of Orifice Sizing Orifice sizing is vital for achieving the best mix quality of two-part polyurethane foam in a Reaction Injection Molding (RIM) operation. Several factors influence the overall injection pressure of your system, and the orifice is the final point before mixing takes place. Each polyurethane chemical supplier provides a datasheet detailing the ideal injection pressure for your specific chemistry. Other critical considerations include the chemical temperature and...]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/post/the-importance-of-proper-orifice-sizing</link><guid isPermaLink="false">69051530151dfd6849fbe287</guid><pubDate>Fri, 07 Nov 2025 20:29:23 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/95e564_a3128ccd29a8405490c14019d463c9ac~mv2.png/v1/fit/w_384,h_340,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item><item><title><![CDATA[Understanding Pump Rotation: A Comprehensive Guide]]></title><description><![CDATA[Determining Pump Rotation can be confusing. This post examines how to confidently determine pump rotation for proper operation.]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/post/understanding-pump-rotation</link><guid isPermaLink="false">689cd3cadf9fab6286ae7851</guid><pubDate>Thu, 14 Aug 2025 12:16:44 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/95e564_b637913d15304f068289a947315839e6~mv2.jpg/v1/fit/w_243,h_213,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item><item><title><![CDATA[Understanding the Basic Operation of a RIM Mix Head ]]></title><description><![CDATA[A Mix Head : The Heart of Polyurethane Processing Equipment A mix head  is essentially the business end of a reaction injection molding (RIM) or polyurethane foam system. It is where two or more liquid chemicals meet, blend, and immediately head into a mold or spray nozzle. This process is crucial as it initiates the reaction and curing of the materials. 1. Purpose of the Mix Head The mix head serves several important functions: Precise Metering:  It accurately measures the correct ratio of...]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/post/understanding-the-basic-operation-of-a-rim-mix-head</link><guid isPermaLink="false">689625c213401d67af2771b5</guid><pubDate>Fri, 08 Aug 2025 17:37:22 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/e53d16_e73e48ac97174ac5a68f4ac445420c8c~mv2.jpg/v1/fit/w_1000,h_1000,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item><item><title><![CDATA[RIM Mix Heads: Essential Best Practices]]></title><description><![CDATA[Mastering RIM (Reaction Injection Molding) mix heads is fundamental for getting the best results in your production processes. This guide...]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/post/rim-mix-heads-essential-best-practices</link><guid isPermaLink="false">68836cb3d452706b149a5e81</guid><pubDate>Fri, 25 Jul 2025 16:59:11 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/e53d16_d0e38db8c11b48d88e073768965a7245~mv2.jpg/v1/fit/w_918,h_918,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item><item><title><![CDATA[Diagnóstico de problemas comunes con bombas de pistón de desplazamiento variable]]></title><description><![CDATA[Las bombas de pistón de desplazamiento variable, en particular las de Rexroth (como las A2VK, A7VK y A2FK) y Rotary Power  (C01, C04,...]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/es/post/diagn%C3%B3stico-de-problemas-comunes-con-bombas-de-pist%C3%B3n-de-desplazamiento-variable</link><guid isPermaLink="false">681cc48c6d378b899ad691d3</guid><pubDate>Thu, 08 May 2025 14:50:02 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/95e564_d34f1749232645b3a386dc904a9e9d72~mv2.jpg/v1/fit/w_691,h_590,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item><item><title><![CDATA[Diagnosing Common Issues with Variable Displacement Piston Pumps]]></title><description><![CDATA[Variable displacement piston pumps, particularly those made by Rexroth (such as A2VK, A7VK, and A2FK) and Rotary Power  (C01, C04, C07,...]]></description><link>https://rdeemter0.wixsite.com/mhr-inc/post/diagnosing-common-issues-with-variable-displacement-piston-pumps</link><guid isPermaLink="false">67e585e789f652c76e8c7205</guid><category><![CDATA[Pump Troubleshooting]]></category><pubDate>Fri, 28 Mar 2025 12:09:38 GMT</pubDate><enclosure url="https://static.wixstatic.com/media/95e564_d34f1749232645b3a386dc904a9e9d72~mv2.jpg/v1/fit/w_691,h_590,al_c,q_80/file.png" length="0" type="image/png"/><dc:creator>rtexer</dc:creator></item></channel></rss>