John Guest Drinks Grey Acetal Stem Reducer
Technical Specification
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Materials:
- Body: Acetal Copolymer (Unfilled)
- O-Ring: Nitrile Rubber (Black)
- Collet: Acetal Copolymer (Unfilled)
- Collet Teeth: 301 Stainless Steel
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Working Pressure: 16 bar (7 bar at 65°C)
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Working Temperature: 1°C to 65°C
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Tube Compatibility: LLDPE, polyethylene, nylon, polyurethane and soft metal tubes.
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Food-grade Material: Suitable for use with foodstuffs and potable liquids.
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Features: Instant push-fit leak-tight connection that is fully demountable.
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Manufacturing: Manufactured and assembled in the UK by John Guest.
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Approvals: WRAS approved and BSI Kitemark certified
Description
Reduces the diameter of an imperial push-fit connection within drinks dispense and water treatment systems. It allows a larger push-fit fitting or assembly to transition down to a smaller tube size without replacing the entire fitting. One side of the reducer features a precision-moulded imperial stem. This stem inserts directly into a compatible John Guest push-fit fitting, acting as a short section of tube and allowing the host fitting to create the seal. The opposite side incorporates a standard push-fit coupling port, complete with collet, stainless steel teeth and nitrile O-ring, which accepts the smaller diameter tubing.
This configuration provides a compact and efficient way to step down line sizes when modifying beer lines, gas feeds or beverage dispense layouts in pub and bar cellar environments. It is particularly useful where equipment changes require a reduction in tubing diameter without reconfiguring upstream fittings.
Manufactured from rigid grey acetal copolymer, the reducer delivers strong mechanical performance and superior flow characteristics. It is suitable for potable liquids, food grade liquids and inert gases. In accordance with the British Beer & Pub Association Code of Practice, it can be used on N2, CO2 and mixed gas dispense lines, as well as air, pneumatic and vacuum applications.
Fully demountable on the push-fit side, the fitting supports quick installation, system alterations and efficient maintenance in commercial environments.
Key Features & Benefits
- Stem connection: Inserts directly into an existing John Guest push-fit fitting.
- Push-fit outlet: Accepts smaller imperial OD tubing with secure collet retention.
- Line size reduction: Enables controlled step-down in beer and gas line diameter.
- Secure collet mechanism: Stainless steel teeth grip tube without distortion.
- Superior flow characteristics: Maintains consistent internal bore performance.
- Food grade suitability: Suitable for potable liquids and beverage systems.
- Gas compatible: Appropriate for CO₂, nitrogen and mixed gas dispense lines.
- UK manufactured: Produced and assembled to consistent quality standards.
Dimensions
| Product Code | Manufacturer Code | Size | A (Tube O/D) |
B | C | D | E | F | G | H |
| 492274 | PI060605S | 3/16" x 5/32" | 0.156" (3.97mm) | 1.36" (34.6mm) | 0.56" (14.3mm) | 0.51" (13.0mm) | 0.10" (2.5mm) | 3/16" (4.76mm) | 0.58" (14.8mm) | 0.65" (16.5mm) |
| 382023 | PI061006S | 5/16" x 3/16" | 0.188" (4.76mm) | 1.22" (31.1mm) | 0.56" (14.3mm) | 0.51" (13.0mm) | 0.12" (3.0mm) | 5/16" (7.94mm) | 0.46" (11.6mm) | 0.77" (19.5mm) |
| 382024 | PI061008S | 5/16" x 1/4" | 0.250" (6.35mm) | 1.47" (37.4mm) | 0.72" (15.7mm) | 0.59" (15.0mm) | 0.21" (5.3mm) | 5/16" (7.94mm) | 0.72" (18.3mm) | 0.75" (19.1mm) |
| 492275 | PI061206S | 3/8" x 3/16" | 0.188" (4.76mm) | 1.43" (36.4mm) | 0.56" (14.3mm) | 0.51" (13.0mm) | 0.12" (3.0mm) | 3/8" (9.53mm) | 0.58" (14.8mm) | 0.85" (21.6mm) |
| 382025 | PI061208S | 3/8" x 1/4" | 0.250" (6.35mm) | 1.59" (40.5mm) | 0.62" (15.7mm) | 0.59" (15.0mm) | 0.21" (5.3mm) | 3/8" (9.53mm) | 0.74" (18.9mm) | 0.85" (21.6mm) |
| 382026 | PI061210S | 3/8" x 5/16" | 0.313" (7.94mm) | 1.57" (39.9mm) | 0.66" (16.7mm) | 0.70" (17.8mm) | 0.23" (5.8mm) | 3/8" (9.53mm) | 0.72" (18.3mm) | 0.85" (21.6mm) |
| 382027 | PI061610S | 1/2" x 5/16" | 1.73" (43.8mm) | 0.66" (16.7mm) | 0.70" (17.8mm) | 0.25" (6.3mm) | 1/2" (12.7mm) | 0.72" (18.2mm) | 1.01" (25.6mm) | |
| 382028 | PI061612S | 1/2" x 3/8" | 0.375" (9.53mm) | 1.89" (48.1mm) | 0.78" (19.7mm) | 0.78" (19.8mm) | 0.30" (7.6mm) | 1/2" (12.7mm) | 0.88" (22.5mm) | 1.01" (25.6mm) |
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