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All Categories > Hose, Couplings, Accessories and Skirtboard Products > Cam and Groove Couplings > Item # DD4040ATC  
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Item # DD4040ATC, 4" x 4"
Coupler x Coupler
Tank Truck API Adapter and Coupler

List Price QUOTE

For offloading through the API adapter and coupler.

This gravity drop coupler is designed to use gravity for quick and complete off-loading. Mates with all API RP-1004 bottom loading adapters. This coupler has an aluminum body and nitrile gaskets. Angled down for better drainage.

Unit of Measure: Imperial Metric Both

Specifications  · Material Specifications  · Note


API Coupler Size

4 in

Coupler Size

4 in



Maximum Working Pressure1

100 psi

Gasket Material

Nitrile Butadiene Rubber (NBR)

Mates with

All API RP-1004 bottom loading adapters

Markets Served

Petroleum (Including Fracking)

Industry Standards

ASTM B85 Grade 383
1 Metal coupling pressures are based on ambient temperature (+70 ºF or +21 ºC) with standard NBR gasket.

Material Specifications
  • Aluminum alloy spec ASTM B85 Grade 383.
  • Brass handles.
  • Steel handle pins, pull rings and safety clips are all zinc-plated.
  • Gaskets are nitrile.

All sizes may not be stocked in all locations.
We disclaim any liability for use of our products in applications other than which they are designed.


Couplings and Accessories
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