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16" & 20" Manholes

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.

Request More Information Petroleum Manhole Cover

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 and Drawings

16" ManholesDescription 
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" Centerd 10" PAF Manhole, Buna-N Gasket, w/o Weld Ring 
SSTN11110016" Centerd 10" PAF Manhole, Buna-N Gasket, w/ Aluminum Weld Ring 
20" ManholesDescription
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" Centerd 10" PAF Manhole, Buna-N Gasket, w/o Weld Ring
SSUN11110020" Centerd 10" PAF Manhole, Buna-N Gasket, w/ Aluminum Weld Ring
Test FixtureDescription
580010" PAF Test Fixture

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Customer Support

Reach Out to Our Customer Support Team for Prompt Assistance and Answers to Any Questions or Concerns You May Have

GET SUPPORT

Technical Support

Contact Us for Technical Support on Your Projects and Resolving Any Technical Issues You Encounter

GET SUPPORT

Contact a Distributor

Locate a Nearby Distributor for Replacement Parts

CONTACT A DISTRIBUTOR

Product Enquiry

Product Information request form to find the right solution

PRODUCT ENQUIRY