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The JB INDUSTRIES mr-501r is a red hand wheel designed for use with JB Industries manifold gauges and service valves. Hand wheels provide manual control of valve operation, allowing technicians to open and close service ports during HVAC refrigerant system service. The red color designation follows standard industry color-coding conventions, typically indicating the high-side or a specific valve position on a manifold set. This component is a direct-fit replacement part for field repair and maintenance of manifold gauge assemblies.
The mr-501r is used in HVAC and refrigeration service applications where technicians work with manifold gauge sets during refrigerant recovery, evacuation, and charging procedures. It is suited for both residential and light commercial refrigeration service work. Licensed HVAC technicians and refrigeration mechanics are the primary installers of this component.
Designed as an OEM-style replacement hand wheel for JB Industries manifold gauge sets and compatible service valve assemblies.
Installation should be performed by a licensed HVAC or refrigeration technician. Before replacing the hand wheel, recover any refrigerant from the system per EPA Section 608 requirements and relieve pressure from the manifold gauge set. Ensure the replacement hand wheel is fully seated and secure before returning the manifold to service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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