Gas Bypass System
The standpipe and hose-over. Plus the tools to install them.
Parts, specifications, test status and installation for the Proflow Gas Bypass System.
What's in the system
Parts and part numbers.
The system is the standpipe unit and the hose-over. The standpipe comes with the airbag fitted. The tools make the install quicker and more consistent. Each site picks the ones that suit how it installs and treats holes.
| Item | Part number | Used for |
|---|---|---|
| System | ||
| Standpipe unit 96 mm | PF-GBS-SP-96-1000 | 50 mm standpipe with the airbag fitted. Seals the hole. |
| Hose-over 50 mm × 15 m | PF-GBS-HO-50-15000 | Joins the two standpipes across the intersection. |
| Installation tools | ||
| Grout tamp | PF-ACC-GT-1500 | Scraping out the hole and hand grouting. |
| Grout lance (reusable) | PF-ACC-GL-1000 | Pumped grout. |
| Foam lance (single use) | PF-ACC-FL-1000 | Silent Seal. |
| Hole plug (wedge) 96 mm | PF-ACC-HP-96-64 | Fits over the standpipe hose to close off the hole. Used with the grout and foam lances. |
| Regulated inflator with 7 m hose | PF-ACC-INF-7000 | Inflating the airbag. |
Specifications
PF-GBS-SP-96-1000- Hole
- 96 mm
- Drilled diameter
- Standpipe
- 50 mm
- Earth lead to a rib bolt or nominated earth point
- Airbag
- 60 psi
- Regulated inflator PF-ACC-INF-7000
Common sealants
- Hand grout
- Cougar Mine Grout Fast Set or High Yield
- Pumped grout
- Minova FB400 or Cougar Mine Grout High Yield
- Borehole sealant
- Minova Silent Seal
Commonly approved on mine sites for gas drainage holes. Or use any product your site has approved.
LimitNot for holes over 110 mm in diameter.
Test status
| Component | Standard | Report | Result |
|---|---|---|---|
| Hose 51 mm (standpipe and hose-over) | AS 2660-1991 fire resistance and antistatic | BPI-24-0192 | PASS |
| Air line 1/4 in (standpipe and inflator) | AS 2660-1991 fire resistance and antistatic | BPI-24-0178 | PASS |
| Air regulator body (inflator) | Aluminium LM24. Mg + Ti 0.23% | Material data | DATA |
| Airbag | Testing in progress | Pending | PENDING |
Hoses tested by BPI Technologies in NSW.
Installation
Installing it
The full procedure will be available once it's issued.
- 01Scrape the hole out with the grout tamp once it's under supported ground.
- 02Push the standpipe into the rib.
- 03Inflate the airbag to 60 psi with the regulated inflator.
- 04Do the same on the other side. Then join the two standpipes with the hose-over.
- 05Treat the hole as your site's borehole intersection process calls for. Hand grout with the tamp or pump grout through the grout lance. For Silent Seal use the foam lance.
Talk to us about your site.
Get in touch to talk about how we can help your site control gas and keep mining. We'll keep you posted as testing comes through.