John Guest Drinks Grey Acetal Stem x Hose Tail
Technical Specification
- Material: Acetal Copolymer (Unfilled)
- Working Pressure: 16 bar (7 bar at 65°C)
- Working Temperature: 1°C to 65°C
- Push Fit: Stem adaptor fits directly into other JG Pushfit Fittings
- Food-grade Material: Suitable for use with foodstuffs and potable liquids.
- Features: Instant leak-tight connection that is fully demountable.
- Manufacturing: Manufactured and assembled in the UK by John Guest.
- Approvals: WRAS approved and BSI Kitemark certified


Description
Designed to convert a John Guest push-fit connection into a secure barbed hose connection, this fitting is commonly used in pub cellar and bar installations where tubing needs to transition into flexible hose assemblies. Unlike standard push-fit fittings with an integrated collet, this adaptor features an imperial stem. The stem inserts directly into a compatible John Guest push-fit fitting, effectively acting as a short section of tube. Once inserted, the push-fit fitting provides the sealing mechanism, creating a reliable, leak-tight joint.
The opposite end incorporates a barbed hose tail designed to grip flexible hose securely when used with an appropriate hose clip. This makes it ideal for connecting beer lines, gas feeds or beverage tubing to hose assemblies, pumps, or specialist dispense equipment.
Manufactured from rigid grey acetal copolymer, the adaptor provides strong mechanical performance and excellent flow characteristics without internal bore restriction. It is suitable for potable liquids, food grade liquids and inert gases. In accordance with the British Beer and 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 when used with a compatible push-fit fitting, the adaptor supports fast installation, system modification and reduced downtime in busy commercial environments. All John Guest fittings are manufactured and assembled in the UK.
Key Features & Benefits
- Imperial OD stem: Inserts directly into John Guest push-fit fittings.
- Barbed hose tail: Provides a secure connection to flexible hose assemblies.
- Rigid acetal construction: Delivers strength and long service life.
- Tool-free integration: Push-fit stem side requires no sealing agents.
- Superior flow characteristics: Maintains full bore without restriction.
- Drinks dispense ready: Suitable for beer, beverage and gas systems.
- UK manufactured: Produced and assembled to consistent quality standards.
Dimensions


| Product Code | Manufacturer Code | Size | A (Stem O/D) |
B | C | D | E | F | G |
| 382040 | PI250806S | 1/4" x 3/16" | 1/4" (6.3mm) | 0.207" (5.3mm) | 0.51" (13.0mm) | 1.65" (41.8mm) | 0.71" (18.0mm) | 0.82" (20.8mm) | 0.08" (2.0mm) |
| 382041 | PI250808S | 1/4" x 1/4" | 1/4" (6.3mm) | 0.270" (6.9mm) | 0.51" (13.0mm) | 1.65" (41.8mm) | 0.71" (18.0mm) | 0.82" (20.8mm) | 0.14" (3.5mm) |
| 382042 | PI250810S | 1/4" x 5/16" | 1/4" (6.3mm) | 0.346" (8.8mm) | 0.59" (15.0mm) | 1.65" (41.8mm) | 0.71" (18.0mm) | 0.82" (20.8mm) | 0.18" (4.5mm) |
| 382043 | PI251006S | 5/16" x 3/16" | 5/16" (8.0mm) | 0.207" (5.3mm) | 0.51" (13.0mm) | 1.69" (42.9mm) | 0.75" (19.1mm) | 0.82" (20.8mm) | 0.08" (2.0mm) |
| 382044 | PI251008S | 5/16" x 1/4" | 5/16" (8.0mm) | 0.270" (6.9mm) | 0.51" (13.0mm) | 1.69" (42.9mm) | 0.75" (19.1mm) | 0.82" (20.8mm) | 0.14" (3.5mm) |
| 382045 | PM250808S | 5/16" x 5/16" | 5/16" (8.0mm) | 0.346" (8.8mm) | 0.59" (15.0mm) | 1.69" (42.9mm) | 0.75" (19.1mm) | 0.82" (20.8mm) | 0.22" (5.5mm) |
| 382046 | PI251012S | 5/16" x 3/8" | 5/16" (8.0mm) | 0.393" (10.0mm) | 0.71" (18.0mm) | 1.85" (46.9mm) | 0.75" (19.1mm) | 0.98" (24.8mm) | 0.22" (5.6mm) |
| 382047 | PI251208S | 3/8" x 1/4" | 3/8" (9.5mm) | 0.270" (6.9mm) | 0.51" (13.0mm) | 1.81" (46.0mm) | 0.87" (22.2mm) | 0.82" (20.8mm) | 0.14" (3.5mm) |
| 382048 | PI251210S | 3/8" x 5/16" | 3/8" (9.5mm) | 0.346" (8.8mm) | 0.59" (15.0mm) | 1.81" (46.0mm) | 0.87" (22.2mm) | 0.82" (20.8mm) | 0.22" (5.5mm) |
| 382049 | PI251212S | 3/8" x 3/8" | 3/8" (9.5mm) | 0.394" (10.0mm) | 0.71" (18.0mm) | 1.96" (49.7mm) | 0.87" (22.2mm) | 0.96" (24.5mm) | 0.26" (6.5mm) |
| 382050 | PI251216S | 3/8" x 1/2" | 3/8" (9.5mm) | 0.522" (13.3mm) | 0.71" (18.0mm) | 1.97" (50.0mm) | 0.87" (22.2mm) | 0.98" (24.8mm) | 0.26" (6.5mm) |
| 382051 | PI251612S | 1/2" x 3/8" | 1/2" (12.7mm) | 0.393" (10.0mm) | 0.71" (18.0mm) | 2.10" (53.4mm) | 1.01" (25.6mm) | 0.98" (24.8mm) | 0.26" (6.5mm) |
| 382052 | PI251616S | 1/2" x 1/2" | 1/2" (12.7mm) | 0.522" (13.3mm) | 0.71" (18.0mm) | 2.10" (53.4mm) | 1.01" (25.6mm) | 0.98" (24.8mm) | 0.39" (9.9mm) |

