16" & 20" Manhole CoversDOT 406

Product Datasheet

Technical specifications, dimensions, and installation notes for the OPW Civacon SS Series.

Download Petroleum Manhole Cover Brochure

OPW-Dover Full Catalogue

Complete product catalogue covering the full OPW-Dover range available through Voltika.

Request Full Catalogue

OPW Civacon SS Series

16" & 20" Manhole Covers

Petroleum manhole assemblies for virtually any tank truck specification — specified by oil companies and transport fleets worldwide.

Civacon offers Petroleum Manhole Assemblies for virtually any petroleum tank truck specification and application; specified by oil companies and transport fleets around the world. Civacon petroleum manhole assemblies are available in plated steel and come in standard sizes of 16" and 20". These manholes offer unparalleled operational benefits and safety features meeting DOT 406 requirements. International assemblies also available.

Technical Specifications

Standard Sizes16" and 20"
ConstructionPlated steel
ComplianceDOT 406 and MC306 Cargo Tank requirements
VentingMeets HM183 replacement & 178.345-10 venting requirements
Vent Size10" (260mm) aluminum vent
Vent Opening PressureNot less than 3.63 PSI
GasketReversible PAF Buna-N (standard); optional materials available
Venting TypePressure/Vacuum venting

Typical Applications

  • Petroleum tank truck compartment access — 16" and 20" manholes
  • DOT 406 and MC306 cargo tank new installations and replacements
  • Retrofit to existing weld rings on petroleum tankers
  • Pressure and vacuum venting service during transport
  • International petroleum transport fleet applications

Features & Benefits

  • New and replacement covers for DOT 406 and MC306 Cargo Tanks; meets HM183 replacement requirements and 178.345-10 venting requirements
  • Designed for Pressure/Vacuum Venting
  • Retrofits to existing weld rings
  • Reversible PAF Buna N Gaskets Standard — optional materials available
  • 10" (260mm) aluminum vent set to open at not less than 3.63 PSI
  • Security Locking feature
  • Lightweight
  • Low profile design

Part Numbers

SSVN10111016" Offset 10" PAF Manhole, Buna-N Gasket, w/o Weld Ring
SSVN11111016" Offset 10" PAF Manhole, Buna-N Gasket, w/ Aluminum Weld Ring
SSTN10110016" Centered 10" PAF Manhole, Buna-N Gasket, w/o Weld Ring
SSTN11110016" Centered 10" PAF Manhole, Buna-N Gasket, w/ Aluminum Weld Ring
SSWN10111020" Offset 10" PAF Manhole, Buna-N Gasket, w/o Weld Ring
SSWN11112020" Offset 10" PAF Manhole, Buna-N Gasket, w/ Aluminum Weld Ring
SSUN10110020" Centered 10" PAF Manhole, Buna-N Gasket, w/o Weld Ring
SSUN11110020" Centered 10" PAF Manhole, Buna-N Gasket, w/ Aluminum Weld Ring
580010" PAF Test Fixture

Authorized Distributor

Voltika is the authorized distributor of OPW-Dover India Private Limited. All products are genuine OPW-Dover, supplied with full manufacturer warranty and after-sales support.

Enquire about this product

Get pricing, availability, and technical support from our specialists.

More in Retail Fuelling Products