Product Overview
The Spirax Sarco MST21 is a high-performance thermostatic steam trap engineered for precision condensate discharge and steam containment in industrial process systems. Utilizing a balanced pressure thermostatic capsule, the MST21 responds to temperature differentials to discharge condensate, air, and non-condensable gases while preventing live steam loss. Its robust construction and compact design make it a direct-fit replacement for OEM installations, ensuring optimal thermal efficiency and energy conservation in demanding process environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Thermostatic Steam Trap (Process & Pneumatic Valve) |
| Model Designation | MST21 |
| Operating Pressure | Standard Industrial Grade (Up to 21 bar / 305 psi) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (Threaded BSP/NPT) |
| Body Material | Stainless Steel / Chrome Steel |
| Max. Operating Temperature | Up to 400°C (752°F) dependent on pressure |
Engineering Features & Advantages
- Precision Performance: Balanced pressure thermostatic capsule ensures tight shut-off and rapid response to temperature changes, minimizing steam loss and maximizing energy efficiency.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a hardened stainless steel valve head and seat for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing for quick and easy installation without system modification.
- Air Handling Capability: Automatically discharges air and non-condensable gases during start-up, preventing air locking and ensuring rapid system warm-up.
Typical Industrial Applications
Ideally suited for steam distribution mains, tracer lines, and process equipment such as heat exchangers, dryers, and jacketed vessels. Commonly deployed in plastic injection molding machines, metallurgical presses, construction & marine hydraulics, and CNC machine tools where precise temperature control and condensate management are critical.
PRODUCT IMAGES
SPIRAX SARCO MST21 Thermostatic Steam Trap
âš¡ 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 SPIRAX SARCO MST21 Stainless Steel Thermostatic Steam Trap. This UK-made high-pressure hydraulic component features a balanced pressure thermostatic capsule, delivering leak-free, reliable condensate discharge for heavy-duty industrial steam systems.