
John Guest PI131216S Stem Enlarger - 3/8 OD Stem x 1/2
Part number: PI131216S
John Guest PI131216S Stem Enlarger - 3/8 OD Stem x 1/2
John Guest Enlarger Stem – Key Features & Benefits
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Designed to easily increase tubing size in existing John Guest push-fit fittings
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Made from durable gray acetal with a food-grade nitrile O-ring
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Suitable for potable water, food-grade liquids, and pure water systems
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Also compatible with air, inert gases, CO₂, nitrogen, pneumatics, and vacuum applications
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Utilizes push-fit technology for quick, secure, and leak-free connections
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Stem insert design allows for seamless integration into existing fittings
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Works with both plastic and copper tubing (OD-sized)
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Enables easy connection and disconnection in seconds—no tools required
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Lead-free construction ensures safety in food and beverage environments
Materials & Specifications
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Body Material: Gray Acetal
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Seal/O-ring: Food-grade Nitrile
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Pressure & Temperature Ratings:
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Up to 150 psi at 68°F (20°C)
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Up to 100 psi at 150°F (65°C)
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Shipping & Returns
SHIPPING
US Shipping is 3-7 business days. Orders ship within 24 hours via USPS, Fedex, and UPS. You have the option to choose your courier. Shipping cost is calculated at checkout.
RETURNS
Our return policy is 30 days from the time of purchase. Orders $500 or more have a 15-day return policy. Items must be returned in the condition you received them, and contain original packaging and serial numbers. Return shipping labels are provided for free. To get started on a return, contact us.
Questions about this product?
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