Scald Protection Valves
Automatically releases shower water overheated by sun or steam tracing at safety and eye shower stations, with a secondary fuse plug for double protection of plant personnel.
- Opens fully
- 105 °F (40 °C)
- Closes
- 95 °F (35 °C)
- Max pressure
- 200 psi (14 bar)
- Size
- 1⁄2" NPT
Applications
Automatic release of shower water overheated by sun or steam tracing in safety and eye shower stations, providing scald protection for operating personnel.
Operating principle
A wax thermostat-actuated valve opens when the water inside heats up to between 98 °F and 100 °F, and opens fully at 105 °F. When the water inside cools to 95 °F, the valve closes automatically.
Double protection. In case of valve failure or dirt clogging, a secondary fuse plug melts at around 120 °F to provide double protection and absolute safety to plant personnel. It also serves as an easily visible failure indicator.
Design features
- Double protection, absolute safety
- Modulating discharge saves water
- All stainless steel valve
- Compact and light weight; easy installation
Capacities and seat orifices
Parts and materials
| Item | Part | Material |
|---|---|---|
| 1 | Inlet fitting | Stainless steel |
| 2 | Body housing | Stainless steel |
| 3 | Name plate | Aluminum |
| 4 | Spring | Stainless steel |
| 5 | Nut | Stainless steel |
| 6 | Guide ring | Stainless steel |
| 7 | Body plate | Stainless steel |
| 8 | Outlet fitting | Stainless steel |
| 9 | Fuse plug | Stainless steel |
| 10 | Fuse alloy | Misc. alloy |
| 11 | Mounting plate | Stainless steel |
| 12 | Nut | Stainless steel |
| 13 | Adjustment screw | Stainless steel |
| 14 | Thermostat | Brass/SS |
| 15 | Valve guide | Stainless steel |
| 16 | Spring | Stainless steel |
| 17 | Gasket | EPDM/SS |
| 18 | Screw | Stainless steel |
Dimensions and weight
| End connectionin (DN) | “W” Øin (mm) | “L”in (mm) | Weightlb (kg) |
|---|---|---|---|
| 1⁄2 (15) | 1 13⁄16 (46) | 4 25⁄32 (121) | 0.80 (0.36) |
Installation
See the full installation and inspection recommendations, including the pre-summer inspection procedure.