Coupling #4964583

Parker Stratoflexs ground service equipment (GSE) quick disconnect (QD) couplings provide a proven solution for making the connection from the hydraulic ground service cart to the aircraft hydraulic system supporting routine ground maintenance. These GSE QDs are specifically designed as the interface from ground cart to aircraft for 3, 000 psig hydraulic systems and are commonly used on both commercial and military programs. The flight side QD nipple half and cap are typically installed on the aircraft hydraulic system service panel or in other locations where appropriate to provide the access point for the hydraulic system servicing connection interface. The GSE QDs use established engineering and design experience to provide this thread-together style connection with a visual and touch confirmation of proper coupling to improve both time and safety. The design incorporates a ratchet-tooth style latching mechanism to ensure that once the two coupling halves are threaded together and fully connected, they are positively locked in place. The ratchet teeth engage to prevent unintentional disconnection of the coupling halves; they provide a secondary locking feature for added safety and security. To disconnect, the outer actuating collar on the coupler half (ground side) is pulled back, releasing the ratchet teeth engagement and while being pulled back, rotated in the counterclockwise direction until fully unthreaded. GSE couplings incorporate a self-sealing valve that permits fluid flow with minimum pressure loss and turbulence, plus a flush-faced design minimizes air inclusion or spillage during coupling or uncoupling. The design allows for simple one-handed operation to connect (thread-on) or disconnect (unthread) the coupling halves during ground service and maintenance of the hydraulic fluid system. As the coupling halves are threaded together, the fluid-flow path opens and when in the fully-open position (hand tight, ratchet teeth fully engaged), the GSE QD connection is complete. The GSE QD consists of two halves, the nipple (441xx series) which is mounted on the aircraft and provides access to the aircraft hydraulic system. The coupler (440xx series) is the interface on the hydraulic ground service cart. The nipple QD half has provision for a latching cap to be installed (C44000 series) to ensure protection of the sealing surfaces during normal aircraft operation. The ground coupler QD half can be protected from foreign object damage, dropping and dragging handling damage in the sometimes harsh ground cart environments using the latching plug (P44000 series). Parkers GSE QDs provide proven reliability for todays standard interface for aircraft utilizing 3, 000 psig hydraulic systems. See the Parker Stratoflex product brochure (Catalog 106-GSE) for size and dimensional information. Standard QD end fittings include:SAE MS33656, MS33657 male flared fittingSAE AS4395, AS4396 male flared fittingSAE AS33514, AS33515 male flareless fitting The GSE quick disconnect series has been proven over years of service and a history of reliability both in the air on the ground. The baseline qualification for this product is built on the applicable requirements of industry standard SAE AS1709 specification. For 4, 000 and 5, 000 psig hydraulic operating system pressures, Parker Stratoflex offers our robust Thread-Lok QD product adapted specifically for ground service applications. Thread-Lok applications are ideal for high vibration, shock, and impulse load environments. The mechanical advantage of connecting the coupling halves with a thread-together design, often provide the most robust performance in systems including engines, landing gear and brake systems.Contact the Stratoflex Products Division with interface and performance requirements to determine if this product is the best choice for your installation and application. APPLICATIONS: Parkers GSE QD provides positive latching with efficient size, light weight, and high reliability to support hydraulic systems in service on todays aircraft. Programs include A-10, C-130, CH-47, H-60, Embraer E170, E190, Bombardier CRJ series and a range of current and new aircraft platforms for both military and commercial jets. FEATURES AND ATTRIBUTES: Designed to protect system integrity without restricting fluid flow rate or operationEngineered, tested, and qualified to provide long-term reliable service for hydraulic service connections on 3, 000 psig operating systemsThread to connect with positive visual and touch indication of fully-connected and latched positionMeets performance requirements of SAE specification AS1709; see 44000 QD qualificationEfficient size and flow-rate combination for hydraulic system applicationsLight-weight designSimple, one hand connect and disconnect operation for ease of useRange of end-fitting styles and fluid-compatibility options availableAluminum alloy and stainless steel constructionApproved on U.S. Government selected NSNs Locking caps C44000 series for use on 441XX series QD nipples (aircraft side)Locking plugs P44000 series for use on 440XX series QD couplers (ground side) OPTIONAL FEATURES: Standard configuration is available in aluminum alloy body construction. Component materials include stainless steel and other materials compatible with specific fluid applications. Contact the Stratoflex Products Division for any other specific material, fluid, or pressure requirements and information.

Parker Stratoflexs single shut-off coupling (SSC) is designed with self-sealing valving to prevent fluid leakage when disconnected from the fluid system. The SSC provides one-side sealing of fluid when disconnected. Used in aircraft hydraulic systems and located at the interface of the engine-driven pump or similar equipment, the SSC is installed on the flexible hose assembly and threads on to an industry standard fitting at the pump, SAE AS4375, AS33514 or bulkhead fitting equivalents. Operation and use of the SSC is simple, positive and reliable. In the fully connected and torqued (installed) position, the SSC valving is open to flow and provides low pressure drop performance. To uncouple, the SSC outer collar is untorqued and unthreaded from the mating standard male fitting. As the SSC is unthreading, the internal valving seals and prevents excess loss of fluid from the SSC and flex hose side of the connection. The standard fitting side remains open, with no self-sealing valving on that side of the connection to retain fluid. Once fully disconnected, the pump or mating equipment and fitting are able to be removed and replaced as required. Parker Stratoflex SSCs use proven engineering and design experience to provide a small size and light weight design with performance requirements to meet industry Standard SAE AS1896. Standard SSC end fittings include:SSC male fitting (hose connection side): SAE AS4375, AS33514 SSC mates with equipment fitting (pump side): SAE AS4375, AS33514, AS4376, AS33515 APPLICATIONS: The single shut-off couplings are used on a variety of aerospace and related applications where proven performance and sealing on one-side only when disconnected is a key requirement along with small size, light weight, and high reliability are important for systems in service today. Programs using the Parker Aerospace SSC include military aircraft hydraulic systems for C-5, C-17, P-8, 767-2C tanker, A400M, and commercial hydraulic systems for 737NG, 747-400, 757, 767, 777, 787, A350 and the Dash-8-400. FEATURES AND ATTRIBUTES: Provides ease of system maintenance in removing engine-driven hydraulic pump or similar equipment while sealing fluid on the flex hose side and preventing excessive spillage or fluid contaminationEngineered, tested, and qualified to provide long-term reliable service in harsh engine environmentsThread to connect with standard fitting to open self-sealing valve and fluid flow Torque to finalize installation similar to standard hose B-nutMeets performance requirements of SAE specification AS1896Sizes range from -06 (38 inch) to -24 (l inch) line sizesEfficient size and light weight designLow pressure drop based on streamline valve designDesign configurations available to meet fire-resistant or fire-proof requirements per SAE AS1055Material options for performance and fluid compatibility options availableStainless steel construction meets typical electrical bonding requirements OPTIONAL FEATURES: Standard configuration is available in stainless steel body construction. Component materials include stainless steel and other materials compatible with specific fluid applications. Contact the Stratoflex Products Division for any other specific material information or requirements and to confirm part numbers. The single shut-off coupling series has been proven over years of service with a history of reliability for aircraft and engine applications. The baseline qualification for this product is based on the applicable requirements of industry standard SAE AS1896 specification. In some cases, qualification is based on or may be required for specific platform installation and performance requirements. Contact Stratoflex Products Division with interface and performance requirements to determine if this product is the best choice for your installation and application. Not all sizes, pressure ranges, or materials may be available.

Parker Stratoflex offers a range of non-locking coupling designs, materials, features, and sizes for fluid system applications. Non-locking couplings are commonly used in aerospace and military fluid cooling systems, providing modularity for key components such as electronics boxes and fast, reliable connection to open-fluid flow when the coupling halves are fully engaged. The 316 series non-locking couplings are equivalent to size -3 (316 inch) for fluid flow area. They are uniquely designed to connect with self-aligning valving for applications needing inlet and outlet fluid flow. Locking the coupling halves in place typically requires some form of external retention and latch. The 316 series couplings are often used in electronic boxes or cards that install into an overall rack or chassis that provides the cooling fluid. These couplings make the connection between the rack-coupling half and the module- (or box-) coupling half to allow fluid flow when fully engaged. Self-aligning valving allows for manufacturing tolerances to be accommodated and the coupling halves to align properly during connection. Self-sealing valving prevents fluid spillage and leakage when the coupling halves are disconnected. Parker uses our precision valving design, common in many of Stratoflex coupling products, to provide optimum fluid-flow characteristics. Stratoflex non-locking couplings have excellent aerospace service history, proven reliability, efficient small envelope size, light weight, and low pressure drop to offer the right solution in todays fluid system applications. The pressure-relief valve option provides reliable crack and resealing capability in the disconnected module-half of the coupling to prevent damage from over pressurization. Please consult Parker Stratoflex with specific requirements, to confirm part numbers, and for available product information that may meet your application needs. APPLICATIONS: Parker Stratoflex non-locking couplings are currently used on aerospace system applications for cooling fluids including polyalphaolefins (PAO), ethylene glycol-water, propylene glycol-water, and other system fluids. Applications include both military and commercial aircraft along with ground vehicles. FEATURES AND ATTRIBUTES: Precision sealing, no leakage or spillage during connect and disconnectSelf-aligning valving allows for installation and connection alignment within specified valuesEfficient size and flow rate combination for with low pressure drop valving designLight-weight design and material optionsProven service history and reliability Primary construction in corrosion-resistant stainless steel Designed for precision system applications including fluid compatibility, pressure, flow rate, pressure drop, crack, and reseat capabilities for aircraft system applications requiring high reliability and precision performance. OPTIONAL FEATURES: The relief valve feature can be incorporated in the Parker Stratoflex quick disconnect couplings (QDC) for applications that may require pressure and fluid relief for the certain system applications. This feature is typically incorporated in the module-half of the coupling to prevent damage due to over pressurization when disconnected and the internal fluid volume is exposed to elevated temperature.Print Product Overview