BULGIN Standard Flow Reg End
Flashback Arrestors
The Bulgin DGNDK-D4-O Standard 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
|
DGNDK-D4-O
|
|
Gas Service
|
Oxygen
|
|
Installation Position
|
Reg End
|
|
Inlet Connection
|
5/8"-18 UNF RH Female
|
|
Outlet Connection
|
Quick Action Coupler and D4 Pin
|
|
Maximum Working Pressure
|
2.0 MPa (20 bar)
|
|
Operating Temperature
|
-20°C to +60°C
|
|
Cracking Pressure
|
50–70 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.
TV – Temperature Sensitive Shut-Off Valve
Automatically interrupts gas flow if excessive temperatures occur,
providing additional protection during flashback incidents.
SV –
Shut-off valve
Provides safe
interruption of gas flow by automatic gas cut-off when disconnecting.
DF – Dust Filter
Protects critical internal
safety components from contamination, maintaining long-term performance and
reliability.
Application
The DGNDK-D4-O Standard 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 200 mm.
Heating
Suitable for heating
applications up to 100 mm.
