ITT Engineered Valves
Skotch Oil-Fired Burner Shut-Off Valve
The Skotch Trifecta is a compact, high-performance oil valve system that houses oil shutoff, purging, and atomizing functions within a single valve body, replacing at least three conventional valves and actuators. Designed to comply with NFPA and IRI guidelines, it prevents out-of-sequence operation, eliminates atomizing-media contamination, and provides positive proof of closure. It works with all types of oil-fired burners and igniters (steam, air, or mechanically atomized) and is compatible with #2, Bunker C, Crude, and waste oils.
Ratings
| Size Range | 3/4" or 1" (T1000/T2000 series); compact T500 series |
|---|---|
| Pressure Rating | Standard valve 300 PSIG @ 450°F; optional 600, 1100, and 1400 PSIG (fuel) @ 450°F |
| Air Supply | 70-120 PSIG clean, dry air |
| Ambient Temperature | Standard 140°F (FM approved); optional 180°F |
| Flow Coefficient (Cv) | T500: Atomizing 4.2 / Purge 1.8 / Fuel 4.0; T1000: Atomizing 10.2 / Purge 3.5 / Fuel 10.0 |
| Weight | Approximately 42 lbs (T500), approximately 85 lbs (T1000/T2000) |
Design & Construction
| Body | Single valve body housing all components (oil shutoff, purge, atomizing) |
|---|---|
| Seat | Oil side: Class VI soft seat with flow-to-close metal-to-metal back-up seat; atomizing and purge seats meet or exceed Class IV |
| End Connections | Sch. 40 or 80 Spigot, Butt Weld, Male NPT, Socketweld, ANSI CL. 300 Raised Face Flange |
| Actuation | Electropneumatic spring-return tandem cylinder (T505/T1005/T2005 series) or electrohydraulic (T1001/T1003/T1004, T2001/T2003/T2004) |
| Failure Mode | Fail closed or fail last upon electric or pneumatic failure |
Standards & Compliance
| Design Standard | Designed to comply with NFPA and IRI guidelines |
|---|---|
| Shutoff Classification | Per ANSI/FCI 70-2 |
| Compliance / Approvals | Meets or exceeds FM 7400 standard for safety shutoff valves (SSOV); models T506, T1006, T1003, and T1003 Factory Mutual approved with appropriate accessories |
| Electrical Ratings | Standard NEMA 1, 3, 4, 13; optional NEMA 7; ingress protection NEMA 4, 4X |
Applications
| Services | Firing and purging of oil-fired burners and igniters; steam, air, or mechanically atomized burners; combination oil safety shutoff, atomizing, and purge valve |
|---|---|
| Fuels | Compatible with any fuel oil, including #2, Bunker C, Crude, and waste oils |
