Swagelok QC Series Quick-Connect
Overview
Swagelok QC Series Quick-Connect is an instrumentation quick-connect coupling engineered to make and break fluid or gas connections in seconds, without twisting, turning, or wrenching. Designed for applications that require frequent connection and disconnection, the Swagelok QC Series Quick-Connect minimizes air inclusion and spillage on every coupling and uncoupling cycle, making it the standard choice wherever instrumentation lines, sample points, or portable equipment must be connected and reconnected repeatedly and reliably.
Working closely with plant engineers in the region, Seven Star LLC proudly supplies the Swagelok QC Series Quick-Connect to industrial, oil and gas, and instrumentation customers across Oman and the wider GCC. Seven Star LLC supplies Swagelok QC Series Quick-Connects on request with manufacturer documentation and local technical support – serving facility engineers and procurement teams in Muscat, Sohar, and Salalah.
Working Principle
The Swagelok QC Series Quick-Connect couples a stem and a body through a simple push-to-connect action: aligning the stem with the body and pushing engages a locking dog mechanism with a large contact area that retains the stem securely under system pressure. To uncouple, the operator simply pulls the body sleeve toward the stem, releasing the lock and separating the connection without tools. Depending on the model selected, the stem can incorporate an internal valve that automatically shuts off flow the instant the coupling is disconnected, virtually eliminating spillage and air inclusion during disconnection.
This design gives the Swagelok QC Series Quick-Connect its defining operational advantage: connections that would otherwise require wrenching threaded fittings together can be made and broken in a single, tool-free motion. A redesigned stem insert uses just one O-ring seal while improving O-ring containment compared with earlier designs, and new-design stems and bodies remain interchangeable with older-design Swagelok quick-connect components, protecting existing installed hardware investments.
Engineering Design of the Swagelok QC Series Quick-Connect
The Swagelok QC Series Quick-Connect is available in 316 stainless steel and brass body materials, in end connection sizes from 1/8 to 1/2 in. (6 to 12 mm), and supports working pressures from 150 psig (10.3 bar) up to 3000 psig (206 bar) depending on the specific series and configuration. The product line spans single-end shutoff (SESO), double-end shutoff (DESO), and full-flow models, giving system designers the flexibility to choose the spillage and flow characteristics appropriate to the application.
Any QC4 stem fits any QC4 body, and any QC8 stem fits any QC8 body, simplifying spare parts management and field interchangeability across an installed base. A heavy-duty sleeve shields the open end of the body against contamination and impact damage, and keyed quick-connect options are available to prevent accidental cross-connection between different fluid systems, an important safeguard in multi-service instrumentation panels and sample stations.
Key Features
The Swagelok QC Series Quick-Connect combines rapid, tool-free operation with a level of interchangeability and contamination control that makes it a standard choice for instrumentation connection points.
- Push-to-connect coupling with a pull-to-disconnect sleeve enables quick, easy operation with no twisting, turning, or wrenching.
- Single-end shutoff, double-end shutoff, and full-flow models are available to match spillage and flow requirements.
- A locking dog mechanism with a large contact area provides secure stem retention under system pressure.
- Any QC4 stem interchanges with any QC4 body, and any QC8 stem interchanges with any QC8 body, simplifying spares.
- Working pressures from 150 psig (10.3 bar) up to 3000 psig (206 bar) cover a wide range of instrumentation duties.
- Available in 316 stainless steel and brass body materials across end connections from 1/8 to 1/2 in.
- A heavy-duty sleeve shields the open end of the body from contamination and impact damage.
- Keyed quick-connect options prevent accidental cross-connection in multi-service instrumentation systems.
Industrial Applications
The Swagelok QC Series Quick-Connect is deployed across instrumentation and control systems, sample stations, calibration and test equipment, and portable process connections wherever frequent, reliable connect and disconnect cycles are required. Typical duties include gas cylinder connections, calibration gas delivery, purge and vent connections, and portable instrument hookups across oil and gas, chemical, and general industrial facilities.
With fast quotation turnaround and technical support, Seven Star LLC distributes the Swagelok QC Series Quick-Connect to refineries, petrochemical complexes, and instrumentation panel builders throughout Oman and the GCC. The quick-connect is a strong fit for sample systems and calibration stations across the Sohar and Salalah economic zones, as well as for oil and gas, process, and laboratory facilities across Muscat that require dependable, tool-free connection points.
Technical Specifications
The table below summarizes the core specifications of the Swagelok QC Series Quick-Connect as supplied by Seven Star LLC.
| Parameter | Specification |
|---|---|
| Model | Swagelok QC Series (Instrumentation Quick-Connect) |
| Coupling Type | Push-to-connect, pull-to-disconnect |
| Body Materials | 316 Stainless Steel, Brass |
| End Connection Sizes | 1/8 to 1/2 in. (6 to 12 mm) |
| Working Pressure | 150 psig (10.3 bar) to 3000 psig (206 bar) |
| Temperature Range | -50°F to 500°F (-45°C to 260°C) |
| Shutoff Configurations | Single-end shutoff (SESO), double-end shutoff (DESO), full-flow |
| Coupling/Uncoupling Pressure Limit | Not to exceed 250 psig (17.2 bar) at 70°F (20°C) |
| Interchangeability | Any QC4 stem fits any QC4 body; any QC8 stem fits any QC8 body |
| Options | Keyed quick-connects, body/stem protectors |
| Typical Applications | Instrumentation, sample systems, calibration, portable connections |
Request a Quote for Swagelok QC Series Quick-Connect
Seven Star LLC supports the full procurement cycle for the Swagelok QC Series Quick-Connect, from formal RFQ submission to availability and lead time confirmation, technical datasheet delivery, and direct consultation with our instrumentation division on stem, body, and shutoff configuration selection for your application. With engineering support in Muscat, we supply every Swagelok QC Series Quick-Connect on request with manufacturer documentation and dependable local technical support. Contact Seven Star LLC today to request a quotation or discuss your quick-connect requirements.
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- Brochure Swagelok QC Series Quick-Connect Catalog Download
Swagelok product families listed here
The items on this page cover the small-bore components an instrument technician handles most often. Swagelok tube fittings join metric and fractional tubing without threading or welding. Swagelok ball valves are represented by the 40 series, the 40G series one-piece instrumentation ball valve (for example SS-43GS4) and the three-way pattern listed as 40GX. The SS-1RS4 is an integral bonnet needle valve from the 1 series. VCR metal gasket face seal fittings serve high-purity and vacuum lines, QC series quick-connects are used where lines are coupled and uncoupled often, and the KPR series is a pressure-reducing regulator.Where Swagelok components are used
Typical duties are transmitter hook-ups, manifolds and impulse tubing, analyzer shelters and sample conditioning panels, chemical injection skids, gas cylinder panels in laboratories, and test benches. In oil and gas service across the GCC, the usual questions are material grade, pressure rating at temperature and, for sour service, whether the manufacturer offers the item to NACE MR0175 requirements.Ordering Swagelok fittings and valves: what we need
A Swagelok ordering number carries most of the specification. In SS-43GS4, SS is 316 stainless steel, 43G identifies the valve series and size, and S4 is a 1/4 in. Swagelok tube fitting end connection. Send the complete ordering number including any suffix for handle, seat or cleaning option. If you do not have it, give us the tube outside diameter and wall thickness, body material, end connections on each port, working pressure and temperature, and the fluid. For a KPR regulator we also need inlet pressure, the outlet control range and the port configuration.Browse Swagelok products by category: Pipes & Fittings, Regulators, Fittings & Valves.
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