Eaton STC® Connectors Catalog F^T*N Powering Business Worldwide

Markets, Applications, and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 How STC Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Understanding STC Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 How to Order STC Connectors . . . . . . . . . . . . . . . . . . . . ....

Applications • Hydraulic - Power Steering - Auxiliary Hydraulics - Power Brakes - Turbochargers - Fuel Injection Systems - Hydraulic Work Circuits • Air Conditioning, Refrigeration and Truck and Bus - Refrigerant Supply Lines - Compressor Discharge - Power Steering - Oil Cooler • Pneumatic - Brakes - Air Supply Lines • Cooling - Transmission Oil Coolers - Heat Exchangers Equipment • Tractors - Ag and Utility • Loaders - Backhoe and Skid-Steer • Engines - Truck, Marine, Construction • Snow plows • Trucks - Lift, Utility Bucket • Crawlers • Compressors • Trailers • Reel and Deck Mowers • Asphalt...

The male connector is inserted into the female connector. The male shoulder spreads the latch ring open. When the latch ring is in its open position, the male shoulder can slide past the latch ring. The male and female are locked into place. As fluid pressure is applied, the latch ring is wedged between the male shoulder and the female angle. Note: Always remember to verify that your STC connection has been made successfully by pulling on the connection. As the STC tool is inserted behind the release sleeve, the steel insert pushes the latching ring forward into a groove in the female half I.D.,...

1. Disconnecting Tool Used for disconnecting the two halves of an STC connection 2. O-Ring* Buna-N (standard), fluorocarbon, EPR, or HNBR materials provide leakproof sealing for hydraulic, air, and refrigeration applications 3. Back-Up Ring** PTFE back-up ring provides resistance to high pressure o-ring extrusion under critical impulsing applications 4. Latch Ring Stainless steel latch ring connects the two halves while under full pressure, impulsing applications . 5. Latch Ring A steel insert molded to an elastomeric dustboot provides both the mechanism for disconnecting the mating STC halves...

STC Adapters: First, state the base part number, thread size, then the nominal STC interface size . (For adapters add a "0” prefix to interface and port thread sizes 6 and 8 . ) FF3042-06 06 S Base Part # Port Thread Size Nominal STC Interface Size* Material Designation Suffix (S=Carbon Steel, the only approved material) List o-ring material designation suffix; omit the "S” suffix if ordering alternate o-ring materials Buna-N (nitrile) is the STC standard; no suffix is needed for standard Buna-N . EPR (Ethylene Propylene Rubber) = -212 Fluoroelastomer = -213 Neoprene = -352 HNBR = -461 Polyurethane...

Design Features • Positive round-wire style latching mechanism • Swivels for installation (in absence of pressure) • Low profile; compact design • Elastomeric o-ring seal -available in many materials • Capable of direct porting into valve blocks or manifolds • Dual purpose dust seal/release sleeve • Simple stamped release tool for disconnecting Benefits • Fast reliable one-hand connections requiring no assembly tools • Eliminates cross-threading, over or undertorquing, and hose twisting • Installs easily in confined areas • Virtually zero leak performance per SAE J1176 • Direct porting eliminates...

Product Qualification Testing • One million cycle impulse test in excess of 133% of DIN2ST operating pressures with side load - Testing for fatigue of connection - Square wave fluid impulse with side load - Virtually zero leakage performance criteria per SAE J1176 • Burst pressures exceed 4 times DIN2ST operating pressures - Proves connection reliability at high pressures • 28 Inches Hg Vacuum - Product tested at seal max . & min temperatures - Same product is then tested to twice the maximum operating pressure - Virtually zero leakage performance criteria per SAE J1176 • Exceeds 96 hour salt...

1 . The STC connection is not recommended for use in swivel applications . Rotation should be limited to assembly and disassembly when zero pressure is present 2 . The o-ring seal determines the temperature range and fluid compatibility of the STC connection except when exceeding the release sleeve operating temperature of 300°F. 3 . Disconnection of the STC connection should be limited to situations where there is no pressure present 4 . Installation of the male STC connector must be made straight into the adapter and not at an angle . Misalignment during the connection results in a higher connect...

Installation and Disconnection of STC Connection Installation/Connection • Install the STC port con- nector into the mating port carefully. Follow recommended installation procedures for the appli- cable port fittings. • Align the STC fitting on the hose assembly with the STC connector, and push the hose fitting into the mating STC connector until you feel a solid stop. • Verify that the STC con- nection has been made successfully by pulling on the connection to make sure that the male connector has been properly inserted into the female connector. Be sure that the direction of pull is parallel...

Service Instructions for STC Connectors Seal Replacement Instructions Inspection • STC fittings are designed to be connected and dis- connected repeatedly without replacing the O-Ring and Back-Up Ring, unless leakage or damage is observed. • Check the O-Ring (A) to ensure it is not cut or otherwise damaged prior to installation or reconnection. out damaging the interior surfaces of the fitting. compatible with the system fluid. • Inspect the interior sur- faces and grooves of the fitting and ensure they are free of foreign material or nicks, scratches, dents, etc. • If the Wire Latch Ring (C)...