PU Foam Guns
JS8621-B alluminum alloy spray PU polyurethane foam gun
The all-aluminium handle version: a stainless steel barrel, a copper nozzle and an all-aluminium handle at 275 g, with an aluminium alloy locking mechanism and tail plug.
Product Overview
The all-aluminium handle version: a stainless steel barrel, a copper nozzle and an all-aluminium handle at 275 g, with an aluminium alloy locking mechanism and tail plug. Copper at the nozzle is the upgrade that matters, because it is the material that keeps flow smooth over the gun's life.
Key benefits
Why Buyers Choose This Model
Copper Nozzle
Copper promotes smooth, precise adhesive flow and prevents blockages. On a foam gun, nozzle material is a service-life decision rather than a performance one.
All-Aluminium Handle
Durability and a comfortable grip in one piece of metal, rather than a moulded handle that flexes as the canister pressure works against it.
Stainless Steel Barrel
Durability and corrosion resistance over extended usage, the same barrel material as the JS8621-C.
Aluminium Alloy Lock And Tail Plug
Secure canister attachment on a pressurised joint, and a tail plug that cuts airflow after use to slow the residue curing inside.
Application scenarios
Where It Is Used
- Daily trade insulation and sealing
- Professional window and door installation
- Crews that flush the gun properly and want it to last years
- Upper metal tier of a distributor range
Who it is for
The Buyers This Model Suits
Professional Installers
Foams daily, cleans the gun, and expects it to last several seasons rather than one.
Insulation Contractors
Needs the copper nozzle and metal handle on a tool that lives in a van and gets used hard.
Distributors With A Metal Tier
The all-metal option that sits below the chrome-plated JS8621-E.
Problems it solves
What It Fixes
Nozzle Wear And Blockage
Copper is specified for exactly this, keeping flow smooth and precise over repeated canisters.
Handles Flexing Under Pressure
An all-aluminium handle does not, which changes how precise the trigger feels.
Residue Curing Between Jobs
The tail plug cuts airflow, which is the practical defence on an uncoated barrel.
Technical features
How It Is Built
All-Aluminum Handle
The foam gun boasts an all-aluminum handle, offering durability and comfortable grip during operation.
Alloy Locking Mechanism
The aluminum alloy locking mechanism ensures secure attachment of foam canisters, enhancing safety and convenience.
Alloy Tail Plug
After application, tightening the aluminum alloy tail plug reduces air flow, facilitating easy cleaning for future use.
Ergonomic Wrench Design
The ergonomic wrench design provides excellent grip and comfort for prolonged tasks.
Specifications
Published Figures For This Model
Every value below comes from our own product specification. Where a figure is not published we leave it out rather than estimating it.
| Net Weight | 275g |
|---|---|
| Packing | 2PCS/inner box, 40pcs/ CTN |
| Color | Aluminum primary color, or customized |
| Carton Size | 38*34*52 |
| Barrel | The stainless steel barrel guarantees durability and corrosion resistance, ensuring optimal performance over extended usage |
| Nozzle | The copper nozzle promotes smooth and precise adhesive flow, preventing blockages and ensuring accurate application |
| Colour options | Aluminum primary color, or customized |
| Packing | 2PCS/inner box, 40pcs/ CTN |
| Minimum order | 2 000pcs for a customised version |
| Customisation | Colour, packing method, carton appearance and logo |
Materials and manufacturing
How This Model Is Made
Parts for the JS8621-B are produced in our own workshops in Jinli Town, Zhaoqing. This model uses both routes: its moulded components come off our five horizontal and three vertical injection moulding machines, and its metal parts come off our fifteen automatic punching machines, nine automatic lathes and three welding machines. Tooling is designed and cut in our own mould room, which is why a change to this model does not queue behind another factory's schedule.
Quality Control
- Every model is weighed against its declared net weight during production, so the carton weight on your packing list matches what arrives.
- Stamped parts are produced in house on 15 automatic punching machines and 9 automatic lathes, so dimensional consistency is controlled at source rather than inspected on arrival.
- Moulded parts come off 5 horizontal and 3 vertical injection moulding machines running up to 10,000 mould open-and-close cycles per day, with tooling maintained in our own mould room.
- The quality management system was certified to ISO 9001:2015 in August 2023, with a certificate valid to 31 July 2026.
- Cartons are counted against the packing list as they are loaded into the container at our own factory door.
Certifications
The quality management system was certified to ISO 9001:2015 in August 2023, under standard GB/T19001-2016, for the manufacture and sale of glass caulking guns and sealant guns. The certificate on file runs to 31 July 2026; ask us for the current renewal status before relying on it. A TUV Rheinland assessment was obtained in 2016.
Customisation Options
- Aluminium Tube Anodizing And Colouring: More than 10 colours available; the surface can be given a frosted texture.
- Aluminium Tube Painting: Up to 10 colours with customisable patterns.
- Aluminium Tube Laser Engraving: Engraved logos, text and patterns on stamped fittings and aluminium tubes.
- Self-Adhesive Logo Labels: Applied to the product in the position the buyer specifies.
- Multi-Colour Logo Printing: Paint screen printing in any colour, with several colours printed at once.
- Tag And Product Screen Printing: Screen printed tags and product markings, multi-colour capable.
Use guide
Getting The Best Out Of It
Step 1
Shake the canister and fit it with the aluminium alloy locking mechanism fully engaged.
Step 2
Keep the canister above the gun so the propellant reaches the valve.
Step 3
Fill to half depth and let the foam expand rather than overfilling the gap.
Step 4
Flush with cleaner and tighten the aluminium tail plug before storing.
Comparison
How It Compares In Our Range
The metal-body group, four models differentiated by coating and finish.
| JS8621-C | Same stainless barrel but a polypropylene handle and aluminium nozzle, 190 g and cheaper. |
|---|---|
| JS8621-D | PTFE coated barrel with a copper nozzle and nylon handle, 260 g, for crews that do not clean. |
| JS8621-E | Sandblasted and chrome-plated aluminium alloy body at 210 g, with adjustable output. |
FAQ
JS8621-B Questions
What materials are used where?
Stainless steel barrel, copper nozzle, all-aluminium handle, aluminium alloy locking mechanism and aluminium alloy tail plug. Net weight 275 g.
Why copper rather than aluminium at the nozzle?
Copper promotes smooth and precise flow and resists the blockage that ends a foam gun's life. It is the upgrade over the JS8621-C's aluminium nozzle.
Is the barrel coated?
No. For a coated barrel that foam will not adhere to, the model is JS8621-D, or JS8621-F with the Teflon coated tube option.
How is it packed?
Two pieces per inner box, 40 pieces per master carton at 38 x 34 x 52 cm. Stock finish is aluminium primary colour.
What is the minimum order quantity?
2,000 pieces for a customised version.
Related products
Other Models In PU Foam Guns
Industries
Trades That Use This Model
Insulation And PU Foam Application
Canister foam guns built around the one thing that kills them, cured foam in the barrel
Window And Door Manufacturing
Glazing, perimeter foaming and gap filling for window and door plants and installers
Construction Sealing And Waterproofing
Cartridge, sausage and powered guns for joint sealing and waterproofing trades
Further reading
Guides That Cover This Model
Why PU Foam Guns Fail And What To Specify Instead
Foam guns are almost never worn out. They are written off because foam cured inside the barrel. Two specification choices change that.
Quote The JS8621-B
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.