PU Foam Guns
JS8621-I All black Foam Gun with ON/OFF Valve
The heaviest gun in the foam range at 350 g: an all-black metal body with an ON/OFF valve.
Product Overview
The heaviest gun in the foam range at 350 g: an all-black metal body with an ON/OFF valve. Where the other models trade weight for cost, this one keeps the metal and accepts the weight, which is what a buyer specifying on robustness rather than on grams is looking for.
Key benefits
Why Buyers Choose This Model
350 g Of Metal
The heaviest foam gun here, and deliberately so. Every gram is body and valve material rather than plastic, which is what a robustness specification actually means.
All Black Finish
A single finish across the whole gun, which reads as professional and hides the marks a foam gun inevitably picks up.
ON/OFF Valve
Flow shut off at the gun between beads, without breaking the canister seal.
40 Per Carton
Two per inner box and 40 per master carton at 38 x 34 x 52 cm, the same carton as the rest of the metal group.
Application scenarios
Where It Is Used
- Heavy daily insulation work
- Crews specifying on robustness rather than weight
- Sites where tools are shared and abused
- Distributor ranges needing an all-metal option
Who it is for
The Buyers This Model Suits
Heavy-Use Insulation Crews
Values body material over weight saved, because the gun is used on the ground more than overhead.
Fleet And Rental Buyers
Buys for tools that will be shared, and all-metal survives sharing better.
Distributors Covering The Metal Tier
The plain all-metal option in a group otherwise differentiated by handle colour and trigger treatment.
Problems it solves
What It Fixes
Plastic Parts Failing First
An all-metal body removes the plastic components that fail on lighter guns.
Finish Marking Up
All-black hides the marks a foam gun collects in normal use.
Breaking The Seal To Stop Flow
The ON/OFF valve stops flow at the gun.
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 | 350 /g |
|---|---|
| Packing | 2PC/ inner box, 40pcs/ CTN |
| Color | black, or customized |
| Carton Size | 38*34*52 |
| Colour options | black, or customized |
| Packing | 2PC/ inner box, 40pcs/ CTN |
| Minimum order | 2000pcs for a customised version |
| Customisation | Colour, packing method, carton appearance and logo |
Materials and manufacturing
How This Model Is Made
Parts for the JS8621-I are produced in our own workshops in Jinli Town, Zhaoqing. This model is predominantly a metal product, made on 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 thread it fully home before opening the valve.
Step 2
Use the ON/OFF valve between beads rather than removing the canister.
Step 3
Fill gaps to about half depth and let the foam expand into the rest.
Step 4
Flush with cleaner before removing the canister, as this barrel is not coated.
Comparison
How It Compares In Our Range
The ON/OFF valve group. This is the plain, heaviest member.
| JS8621-G | All-black metal at 290 g with a plastic-dipped trigger, lighter. |
|---|---|
| JS8621-H | Black metal with a yellow plastic handle at 340 g. |
| JS8621-E | Sandblasted chrome-plated aluminium alloy at 210 g with adjustable output. |
FAQ
JS8621-I Questions
Why is it heavier than the other all-black model?
350 g against the JS8621-G's 290 g. The difference is body and valve material rather than a feature; the JS8621-G also has a plastic-dipped trigger.
What are the specifications?
350 g net weight, all-black metal body, ON/OFF valve. Packed two per inner box and 40 per carton at 38 x 34 x 52 cm.
Is the barrel coated?
No. The coated barrel options are JS8621-D and the Teflon coated tube version of JS8621-F.
Is output adjustable?
The anti-slip threaded output adjuster is documented on the JS8621-E. On this model, flow is controlled at the ON/OFF valve and the trigger.
What is the minimum order quantity?
2,000 pieces for a customised version, per colour.
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-I
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.