PU Foam Guns
JS8621-G All Black Metal Foam Gun with ON/OFF valve (plastic dipping trigger)
An all-black metal-bodied foam gun with an ON/OFF valve and a plastic-dipped trigger, at 290 g.
Product Overview
An all-black metal-bodied foam gun with an ON/OFF valve and a plastic-dipped trigger, at 290 g. The plastic dipping on the trigger is the specific difference from the other all-black models: a metal trigger on a metal gun is cold and slippery, and dipping it fixes both.
Key benefits
Why Buyers Choose This Model
All Black Metal Body
A metal body throughout, finished black, which puts metal at every point that contacts foam or carries pressure.
Plastic Dipped Trigger
The trigger is plastic dipped rather than bare metal, which improves grip and removes the cold-metal feel in winter work.
ON/OFF Valve
Flow can be shut off at the gun between beads, without removing the canister and losing the seal.
290 g, 40 Per Carton
Mid-weight in the metal group, packed two per inner box and 40 per carton at 38 x 34 x 52 cm.
Application scenarios
Where It Is Used
- Trade insulation and sealing in cold conditions
- Work needing frequent shut-off between beads
- Distributor ranges wanting an all-black metal option
- Crews who dislike bare metal triggers
Who it is for
The Buyers This Model Suits
Cold-Weather Crews
A bare metal trigger in winter is genuinely unpleasant, and plastic dipping is the cheap answer.
Trade Insulation Users
Wants a metal body and an ON/OFF valve at a trade rather than a premium price.
Distributors Needing Colour Variety
All-black reads as professional and sits alongside the yellow and red models in a range.
Problems it solves
What It Fixes
Cold Metal Triggers
Plastic dipping on the trigger addresses grip and temperature at once.
Removing Canisters To Stop Flow
The ON/OFF valve stops flow at the gun instead.
Plastic Where Pressure Is
An all-metal body keeps plastic away from the pressurised parts entirely.
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 | 290 /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-G are produced in our own workshops in Jinli Town, Zhaoqing. This model is predominantly a moulded product, made on our five horizontal and three vertical injection moulding machines, which run up to 10,000 mould open-and-close cycles per day. 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
Close the ON/OFF valve between beads rather than removing the canister.
Step 3
Fill to half depth and let the foam expand into the rest of the gap.
Step 4
Flush with cleaner before removing the canister, since this barrel is not coated.
Comparison
How It Compares In Our Range
Four ON/OFF valve models; the differences are handle and trigger treatment.
| JS8621-I | All-black metal at 350 g, the heaviest of the group. |
|---|---|
| JS8621-H | Black metal body with a yellow plastic handle at 340 g. |
| JS8621-F | Red plastic handle with a silver or Teflon coated tube option, 290 g. |
FAQ
JS8621-G Questions
What is the difference from the JS8621-I?
The plastic-dipped trigger, and weight: 290 g against 350 g. Both are all-black metal bodies with an ON/OFF valve.
Is the barrel coated?
No. For a coated barrel, the models are JS8621-D or the Teflon coated tube version of JS8621-F.
What are the specifications?
290 g net weight, all-black metal body, ON/OFF valve, plastic-dipped trigger. Packed two per inner box and 40 per carton at 38 x 34 x 52 cm.
Can the colour be changed?
Yes. Stock is black and other colours are available. Each colour counts toward the 2,000 piece minimum.
Does it fit standard canisters?
Yes, the standard threaded fitting. Send us your canister specification if it is non-standard.
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-G
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.