OPW/Civacon T400 lite covers
Features & Benefits
•
Complies with EN 13314 (fill-cover) and EN 13317 (base-cover)
•Pressure and vacuum vent fitted as standard for tank breathing. Various ratings available to suit operational requirements. Two vents may be fitted if required.
• Spring-loaded Pressure-activated fill cap provides emergency fire engulfment and venting
• Emergency venting capacity 7000m3/h air at 350mb.
• Automatic sealing of the P!V vent in a rollover situation
• 20" base-plate for access compliance with ADR.
• Two-stage opening allows safe release of residual compartment pressure before fully opening fill cap.
•Lockable - available with key lock
• Secure 24-bolt fixing as required by ADR.
• Lightweight pressed aluminium base-plate material complies with EN 13094.
• Security facility for padlock, wire or plastic seal.
Material |
Aluminum alloy 5764 |
Seals |
Acryl-nitril or Viton |
Temperature |
-20ºC to +70ºC |
Max air flow |
7000m3/h at 0.35bar |
Weight |
9.5 kg |
Standarts |
EN13314, EN13317, ADR 6.7 |
Size |
(CW) T400-249217GJ – 20”
(58D) T400-240017GJ – 20” |
10” PAF |
Aluminum manhole covers Alfons Haar DO 530/300/2A/DD

Manhole cover with emergency pressure relief valve. Part #1361011.
Nominal pressure : 0 bar
Design temperature : 50°C
Opening pressure of emergency pressure relief valve : 0,35 bar
Pressure loss at flow rate of 2400 l/min and lift-off 10 mm : 0,4 bar
Weight : approx. 10 kg
NBR seals