Product Overview
The Swagelok SS-43XS8MM-51D is a high-precision, two-way ball valve engineered for demanding industrial process and pneumatic applications. Manufactured by Swagelok, a globally recognized leader in fluid system components, this valve features a robust 316 stainless steel construction and an 8 mm Swagelok tube fitting connection. The SS-43XS8MM-51D operates on a quarter-turn manual actuation principle, utilizing a precision-machined ball and PTFE seat to provide reliable, leak-tight shutoff and flow control. Its compact, modular design makes it an ideal choice for integration into hydraulic, pneumatic, and general process systems where space is limited and reliability is paramount.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valves > Process & Pneumatic Valves > General Process & Pneumatic Valves |
| Model Designation | SS-43XS8MM-51D |
| Body Material | 316 Stainless Steel |
| Connection Type | Swagelok Tube Fitting, 8 mm |
| Operating Pressure | Up to 3000 psig (207 bar) at 100°F (38°C) |
| Temperature Rating | -20°F to 450°F (-29°C to 232°C) with PTFE seats |
| Flow Coefficient (Cv) | 0.9 (approximate) |
| Orifice Size | 0.187 in (4.8 mm) |
| Actuation | Manual, Quarter-Turn Handle |
| Mounting & Connection | Standard Swagelok Tube Fitting Interface |
Engineering Features & Advantages
- Precision Performance: The precision-machined ball and PTFE seat ensure bubble-tight shutoff and smooth quarter-turn operation, providing accurate flow control and minimal pressure drop.
- Industrial Reliability: Constructed from 316 stainless steel, the valve offers excellent corrosion resistance and durability, making it suitable for continuous operation in harsh industrial environments.
- Direct Fit Replacement: The SS-43XS8MM-51D is designed to exact Swagelok dimensional and functional standards, ensuring seamless compatibility with existing Swagelok tube fitting systems and original OEM components.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original SWAGELOK OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
Its compact, modular design makes it an ideal choice for integration into hydraulic, pneumatic, and general process systems where space is limited and reliability is paramount.
PRODUCT IMAGES




SWAGELOK SS-43XS8MM-51D Ball Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine SWAGELOK SS-43XS8MM-51D 3-Way Ball Valve. This USA-made hydraulic component features a compact design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.