Injection Hose Packer

Product Description

The Injection Hose Packer (HO-END 6) is a specialised plastic connector that terminates an embedded injection hose at the surface of a construction joint, providing the access point through which the joint can be later injected — or re-injected — with sealing resin or grout.

This is not a crack-injection packer. It is a component of a re-injectable waterstop system, where a porous or perforated injection hose is cast into the concrete at every construction joint during pour. The hose runs the full length of the joint inside the concrete, and the two ends of each hose loop terminate at the surface via injection-hose packers — usually housed in small surface-mounted junction boxes. When a joint is found to leak (during commissioning or at any point during the structure’s service life), the injection gun is connected to the surface packer and resin or acrylic gel is pushed through the embedded hose, sealing the joint from the inside.

Because the same hose can be flushed and re-injected multiple times, the system provides a permanent waterproofing repair option without ever having to excavate or break out the structure.

Characteristics and Advantages

• Designed for injection-hose terminations, not crack injection — this is the right component to use at the exit point of an embedded waterstop hose, where standard crack-injection packers would not seal correctly
• 5–8 mm hose inner-diameter compatibility — covers the full range of injection-hose products on the European market in a single SKU
• M6 × 1 or 1/4 thread — standard European injection-gun connection; works with every brand of injection equipment in that thread family
• Generous 2.5 mm flow passage — low resistance to resin flow, important because the embedded hose itself is long (often 20+ metres around a tank or basement perimeter) and adds significant flow resistance
• Plastic construction — corrosion-free, immune to attack from acrylic gels, polyurethane resins, and the cementitious environment of fresh concrete
• Right-hand thread — standard direction, no special tooling required to fit or remove

How a Re-Injectable Waterstop System Works

A re-injectable injection-hose waterstop turns every construction joint in a structure into a future repair access point:

1. During concrete pour — an injection hose is laid along the centreline of every construction joint, immediately before the next concrete lift is poured. The two ends of the hose loop are brought out to the surface and terminated with Injection Hose Packers (this product), typically housed in surface-mounted junction boxes for protection during the rest of the build.

2. During commissioning or in service — if a leak develops at any construction joint, the maintenance team locates the nearest hose termination box, opens it, and connects the injection gun to the Injection Hose Packer. Acrylic gel or polyurethane resin is then pushed through the embedded hose under controlled pressure.

3. The hose seals the joint — the resin or gel exits through the perforations along the embedded hose, flooding the construction joint along its full length and sealing the leak from inside the concrete.

4. The hose can be flushed and re-injected — for acrylic gel systems, the hose is flushed with water after curing, leaving it available for future re-injection if another leak develops at the same joint years later.

Application Instructions

The Injection Hose Packer is installed once during concrete pour, and used during any later injection operation. The instructions below cover the in-service injection workflow:

1. Locate the hose termination box containing the Injection Hose Packer at the nearest end of the affected construction joint.

2. Open the termination box and inspect the packer. Clean any dust or cement laitance from the gun-side thread.

3. Connect the injection gun to the M6 × 1 or 1/4 thread on the packer head.

4. Pre-flush the embedded hose with water (for acrylic gel systems) to clear any old gel residue and to confirm the hose is still flowing — water should return at the opposite end of the same hose loop.

5. Inject the resin or gel at the manufacturer-specified pressure. Resin should be observed exiting at the opposite end of the hose loop as confirmation that the full joint length has been treated.

6. Close the opposite end of the hose loop (also a Hose Packer) when return resin appears, then continue injecting under pressure until the joint stops accepting resin — this confirms the joint cavity is full.

7. Disconnect the gun and allow the resin or gel to cure.

8. (Optional, for acrylic gel) Flush the hose with water immediately after curing to leave it available for future re-injection.

9. Close the termination box for the next service interval.

Applications

• Construction-joint waterproofing in basements, tanks, sumps, and underground structures
• Tunnel-segment joints — Each ring-to-ring construction joint is fitted with an injection hose terminated by these packers
• Reservoir and water-treatment tanks — Where future re-injection access is a design requirement
• Foundation slab/wall joints — The horizontal joint between foundation slab and rising wall is the highest-risk joint in any basement, and an embedded re-injectable hose with surface terminations is the standard waterproofing solution
• Bridge decks and culverts — Construction joints in cast-in-place concrete infrastructure
• Repair of pre-existing injection-hose systems — Replacing damaged or seized hose terminations on legacy waterstop installations