BULGIN High Flow Torch
End Flashback Arrestors
The Bulgin DG91UA-O
High Flow Flashback Arrestor is a German-engineered and manufactured safety
device designed to deliver the highest levels of safety, performance, and
reliability in oxy-fuel welding, cutting, and heating applications.
Every flashback arrestor is 100% function tested prior to leaving the factory. All assembled devices are tested with a flashback test, a leak test and a gas non-return valve test. This rigorous quality assurance process provides complete
confidence in product performance, safety, and compliance.
Flashback arrestors are one of the most critical safety devices in any
oxy-fuel system. The Bulgin Flashback Arrestor range combines proven German
engineering, precision manufacturing, and comprehensive testing to deliver
dependable protection in demanding industrial environments.
Key Benefits
- Prevents dangerous reverse gas flow
- Stops flashbacks before they can travel
upstream
- Provides automatic thermal shut-off
protection
- Protects internal safety components from
contamination
- 100% factory function tested and flame
tested
- Suitable for demanding industrial
environments
- Complies with EN ISO 5175-1 and AS 4603
Product Specifications
|
Parameter
|
Specification
|
|
Model
|
DG91UA-O
|
|
Gas Service
|
Oxygen
|
|
Installation Position
|
Torch End
|
|
Inlet Connection
|
5/8"-18
UNF RH Male
|
|
Outlet Connection
|
5/8"-18
UNF RH Female
|
|
Maximum Working Pressure
|
2.5 MPa
(25 bar)
|
|
Operating Temperature
|
-20°C to
+60°C
|
|
Cracking Pressure
|
50 mbar
|
|
Construction Material
|
Brass body with stainless steel spring
components
|
|
Standards
|
AS 4603, EN ISO 5175-1,
|
|
Testing
|
100% Function Tested & Flame Tested
|
|
Country of Manufacture
|
Germany
|
Integrated Safety Features
NV – Gas
Non-Return Valve
Prevents
reverse gas flow and the formation of dangerous mixed-gas conditions within the
system.
FA – Flame
Arrestor
Extinguishes
flashbacks before they can propagate upstream, protecting regulators, hoses,
and gas supply equipment.
DF – Dust
Filter
Protects
critical internal safety components from contamination, maintaining long-term
performance and reliability.
Application
The DG91UA-O High Flow Flashback Arrestor is designed for use in oxy-fuel operations
including:
Welding
Suitable
for material thicknesses up to 30 mm.
Cutting
Suitable
for cutting applications up to 700 mm.
Heating
Suitable
for heating applications >100
mm.
