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Rola-Chem 521170 In-Line Check Valve – 1/4″ MNPT x 3/8″ Hose Barb
The Rola-Chem 521170 In-Line Check Valve is an OEM one-way valve designed to protect chemical feed systems by preventing reverse flow. It features a 1/4″ MNPT (Male National Pipe Thread) outlet and a 3/8″ hose barb inlet, offering a secure and chemically resistant connection between dosing lines and injection points.
Ideal for chlorine, acid, and other treatment chemicals, this valve is used in Rola-Chem peristaltic pump installations for pools, spas, and commercial water systems. Its compact and durable design ensures consistent operation and helps maintain the accuracy of chemical dosing systems.
Key Features
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One-way check valve prevents backflow
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1/4″ MNPT (male) x 3/8″ hose barb connection
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OEM part for Rola-Chem chemical feed systems
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Durable, chemical-resistant plastic body
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Compatible with acid, chlorine, and other pool chemicals
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Ensures proper chemical flow direction and system protection
