OPW Engineered Systems
Loading Arm Bottom Loading Coupler

Order Guide

The latest in API Bottom Loading Couplers, a proven performer at major oil terminals around the world.

• 5-Cam Design: Easy alignment, tight adaptor connections and side-force resistance during loading
• Dual Interlocks: Ensure that opening cannot occur unless properly connected to an API Adaptor
• Superior Sealing: Simple, reliable smart-seal design with dual high-performance O-rings
• High-Performance Seals: Special Fluorocarbon Seal Compound for compatibility across most products, including gasoline, diesel, biodiesel and ethanol (Other seals available upon request.)
• Maintenance: Pins and small threads eliminated to provide quick, easy access to critical components; nose seal replaced without requiring removal of coupler from rack; no special tools required; complete rebuild in minutes
• Operation: Stainless-steel “ergo” handle design for easy, smooth operation

Design Parameters & Materials

Design Parameters	Materials
Max Design Pressure:	125 PSI (g), 8.6 bar (g)	Body, Sleeve, Poppet	ASTM B26 Anodized (Aluminum A356-T6)
Max Allowable Working Pressure:	75 PSI (g), 5 bar (g)	Cam	ASTM A351 CF8M (316 SST)
Max Flow Rate:	600 GPM, 135 M3/H	Cylinder	ASTM SB241 (Aluminum 6061-T6)
Max Temperature:	See Seal Options	Shaft	ASTM A564 (13-8 Condition RH 950 SST)
Weight:	18.5 lbs (8.39 kg)	Seals	See Seal Options
Pressure Drop (At Max Flow Rate)	2-5 PSI (g), .24 bar (g)	Clevis Pin	ASTM SA 564 (17-4 PH SST, H900 Hardened)

Seal Options

Seal Material	Coupler Model #	Nose Seal (10)	Stuff Box Seal (22)	Stuff Box Seal (23)	Cylinder Seal (9)	Temp. Rating
Buna	1004D3-0401/1005E3-0401	H30482M	H20129M	H31705M	H30258M	-20°F–250°F (-29°C–121°C)
Fluorocarbon	1004D3-0402/1005E3-0402	H30483M	H20175M	H31706M	H30217M	-20°F–400°F (-29°C–204°C)
EPT	1004D4-0404/1005E3-0404	H31957M	H20176M	H31707M	H31956M	-50°F–225°F (-46°C–107°C)