Where critical connections become a reliable solution
The key lies in three design features that make HP2 more than an insulating flange.
01 Maximum tightness and durability thanks to a special, heavy-duty block flange connection
02 Maximum safety thanks to full-surface contact area between the screw and the bolt
03 Deposit-free thanks to conical reduction
Acceptance testing
Safety you can verify
HP2 insulating flange connections are safety-critical components, which is why every insulating flange connection that leaves our factory has undergone a final acceptance test of the prefabricated components in accordance with regulatory requirements and is accompanied by complete project documentation. This turns HP2 insulating flange connections into transparent, fully traceable safety components within your plant.
FINAL ASSEMBLY ACCEPTANCE
The HP2 insulating flange connection is tested as a complete construction unit and accepted in accordance with DIN EN 12007-3, DVGW G462, DIN EN 1594, DVGW G 463, DVGW GW 24 and TRFL § 9(5) Part 2.
HIGH-VOLTAGE TEST
A high-voltage test at 5,000 V, with a limit value of 10 mA, ensures the electrical isolation strength of the connection.
LEAKAGE TEST
The leak test is performed using test gas at a test pressure of 1.1 x DP and a holding time of 10 minutes. The pressure is then reduced first to 5 bar and then to 2 bar, and leak tightness is verified at these pressure levels as well.
STRENGTH TEST
A triple pressure ramp test between 10 bar and 85% standard temperature and pressure (STP), followed by a strength test at 1.5 x DP using deaerated water, confirms the connection’s mechanical safety margins (holding time 30 minutes).
DC VOLTAGE TEST
An insulation resistance test using 500 V DC and a minimum threshold of 0.1 MΩ verifies that electrical isolation is secure.
Documentation
Each HP2 insulated flange connection comes with complete documentation:
- Acceptance test certificate APZ 3.1 in accordance with DIN EN 10204,
- Declaration of Conformity and CE marking in accordance with the Pressure Equipment Directive PED 2014/68/EU (certified under Module H), and
- Documentation drawing, including torque specifications
Acceptance test certificate APZ 3.1 in accordance with DIN EN 10204, Declaration of Conformity and CE marking in accordance with the Pressure Equipment Directive PED 2014/68/EU (certified under Module H), and Documentation drawing, including torque specifications