LYNX Series Bottom-Loading Coupler

LYNX is optimized to bring your liquid terminals and tank trucks the very best in dry-break API technology. From its ultra-durable stainless-steel collar to its ability to protect your loading-arm connection even when facing surge pressures up to 500 psi, you can count on LYNX for years of service and to help minimize fluid loss.

Fast Disassembly, Less Downtime

If you have 30 seconds and a screwdriver, you can disassemble LYNX. Thanks to a U-pin design, loading-arm operators can perform coupler maintenance without special tools and do it quickly.


  • 5-Year Warranty
  • Fast in-field replacement of the main seals, on or off the arm
  • Quick and easy disassembly of entire coupler through U-pin design
  • Automatic latching
  • U-pin is secured when the TTMA flange is fastened to prevent the pin from coming out during service
  • A variety of seals available to suit a range of applications
  • Two operating handle sizes to suit customer preference
  • Four "true-interlocking" stainless-steel latches ensure secure coupling and maximum safety
  • High-quality components including a stainless-steel collar and hard anodized aluminum body for increased service durability and life
  • Nominal product leakage during disconnect increases site safety
  • Low risk of leakage because of a proven seal design
  • Ergonomic operating handle and carry loop results in less physical strain on users


Handle LengthShort 5.9" (150mm) or Long 7.8" (200mm)
SealsViton B, Viton GFLT, Nitrile/Buna, Fluorosilicone, FFKM
Max Working Pressure80 psi (5.5 bar) (550 kPa)
Product Test Pressure119 psi (8.2 bar) (820 kPa)
Design Pressure363 psi (25 bar) (2500 kPa)
Max Surge Pressure493 psi (34 bar) (3400 kPa)
Operating TemperatureViton B70: -4°F to 176°F (-20°C to 80°C); Viton GFLT: -20°F to 140°F (-29°C to 60°C); Nitrile/Buna: -40°F to 212°F (-40°C to 100°C); Fluorosilicone: -49°F to 350°F (-45°C to 177°C); FFKM: -40°F to 140°F (-40°C to 60°C)
Design StandardAPI RP 1004 8th EDITION 2003 - Bottom Loading and Vapour Recovery; AS5602-2009
DismantlingRemoval of one U-pin enables the shaft assembly and main poppet to be withdrawn
  • By industry standard 4" (100 mm) TTMA Flange
  • 8 holes Ø7/16" on 5.8" PCD, 6.6" outside diameter (Ø11 mm on 149 mm PCD, 168 mm OD)
  • Use spring washers when mounting coupler as per common industry practice
Adjustment or ServiceRefer to Maintenance Instructions document
Weight19 lbs. (8.6 kg.)


API700 Series Bottom Loading Coupler

The API700 Series of Bottom-Loading Couplers is the third generation of Liquip-manufactured API couplers. It provides an effortless automatic connection for the safe and environmentally friendly transfer of product from the loading rack to the tank truck.


  • Stainless-steel outer collar
  • New latching-mechanism greatly improves geometry
  • Automatic-latching mechanism and one-touch disconnect ensures effortless operation
  • Hard-anodized aluminum body for extended life
  • Precision-machined latch spindles ensure superior latch alignment, resulting in fewer drips at disconnection
  • Separate nose and inner-poppet seals prevent high pressure from extruding inner seal
  • Ergonomic loop-and-ball handle eases operation and improves comfort
  • Poppet nose seal is replaceable without removing coupler from service
  • Coupler can be disassembled in 2-3 minutes for maintenance
  • Viton® B70 seals standard with Viton® GFLT seals in stock
  • Additional seal materials available upon request

Liquip Maintenance Video