Water Temperature Control—Emergency Fixtures—Thermostatic (Rada Z358-40)

Rada Z358-40

Rada Z358-40 has been designed specifically to provide temperature
controlled water to emergency fixtures as detailed in ANSI Z358.1-2009.

Z358-40 is a Thermostatic Mixing Valve designed specifically to
deliver tepid water to emergency fixtures. Compact design and top or
bottom blended water outlet makes Z358-40 ideal for OEM, new
construction and upgrade/retrofit installations.

For Emergency Drench Showers. Rada Z358-40 will pass ANSI specified
minimum of 20 gpm (75.7 lpm)—actual 46 gpm (147 lpm)—and will flow a
minimum of 15 gpm (57 lpm) from direct cold water supply in hot failure
mode at 45 psi (3 bar) pressure drop.

For Emergency Eye Wash Stations. For single or multiple fixture
installation, Rada Z358-40 will control accurately at flow rates from 40
gpm (151 lpm) to below 2 gpm (7 lpm)—actual 46 gpm @ 45 psi pressure
drop.

In 40 gpm (151 lpm) flow applications, Z358-40 will pass approximately 40% of original flow setting in hot failure mode.

In 30 gpm (114 lpm) flow applications, Z358-40 will pass approximately 50% of original flow setting in hot failure mode.

In 15 gpm (57 lpm) flow applications, Z358-40 will pass approximately 75% of original flow setting in hot failure mode.

Operational Specifications

• Site Adjustable—Mechanical maximum-temperature limit stop and
  single-temperature locking features as a function of the temperature
  control handle design.
• Thermal shutdown feature is designed to protect user from unsafe
  water temperatures or hot water/chemical reaction should cold supply be
  interrupted during use.
• Unique constant cold water flow design ensures that in the event of a
  hot supply failure the Rada Z358-40 will allow cold water to flow to
  fixture.
• Unique constant cold water flow feature allows the inlet hot water
  supply to be set within a prescribed range, thus limiting the potential
  outlet temperature to a safe maximum in the event of misadjustment,
  unauthorized tampering or thermostat failure. This feature presumes that
  the correct initial commissioning was performed and that the cold water
  supply has not been interrupted.

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