The HAT/SP is a self-operating scald protection valve designed to prevent over-temperature water discharge in safety showers and eyewash stations by initiating flow when the thermostatic actuator senses 98°F (36.7°C) and closing when water drops below 95°F (35°C). It features a stainless steel body, fittings, spring, and plug with EPDM and FEP-encapsulated Viton seals for corrosion resistance and long service life. The valve operates without external power, installs in any orientation, and has two wrench flats for easy mounting. Available in 1/2" and 3/4" NPT sizes, it has a maximum operating pressure of 200 PSIG (13.8 BAR) for the C-port and 150 PSIG (10.33 BAR) for reverse flow C-port configurations, with a maximum temperature rating of 300°F (149°C). The thermosensitive actuator responds to ambient or fluid temperature depending on flow orientation. It meets ANSI Z358.1 standards for thermal protection up to 105°F.
A safety hazard for plant personnel can occur when utilizing safety showers or eyewash stations if overheating of the pipes caused by solar radiation or steam/electric tracing results in extremely high temperatures at the point of use.
The HAT/SP valve can be installed at the highest point of the system to prevent an individual from being scalded when they activate the safety shower or eyewash unit. The valve will open to establish flow until the over-temperature water is eliminated and then it will then modulate closed.
The HAT/SP valve continually senses and automatically bleeds excessively hot water from safety shower and eyewash systems. Scald protection is provided with minimal water consumption. The unique plug and seat design offers the most reliable, tight shutoff available.
The HAT/SP-105 will initiate flow when the thermostatic actuator senses 98°F (36.7°C) and will remain open as long as the discharge water temperature is above 95°F (35°C).
In standard flow, the actuator will sense ambient temperature to initiate flow and then respond to water temperature; in reverse flow, the actuator will sense water temperature.
| ThermOmegaTech® | |
|---|---|
| Product Category | Industrial Valves |
| Product Number | HAT/SP |
| Product Name | Scald Protection Valve |
| Valve Type | Control Valve; Drain; Safety |
| Primary Material | Brass / Bronze (optional feature); Stainless Steel |
| Media | Water; Hot Water; Cold Water |
| Valve Size | 0.50 to 0.75 inch (12.70 to 19.05 mm) |
| Maximum Pressure | 200.00 psi (141 m H2O) |
