Water Temperature Control—Emergency Fixtures—Thermostatic

Rada Z358-20

Rada Z358-20 has been designed specifically to provide tepid water to emergency fixtures as detailed in ANSI Z358.1-1998 specifications.

Z358-20 is a Thermostatic Mixing Valve of “sealed for life” disposable cartridge construction. Compact design and top or bottom blended water outlet make Z358-20 ideal for OEM, new construction and upgrade/retrofit installations.

For Emergency Drench Showers. Rada Z358-20 will pass ANSI specified minimum of 20 gpm/76 lpm (actual 23 gpm/87 lpm) and will flow a minimum of 10 gpm (38 lpm) from direct cold water supply in hot failure mode at 40 psi (2.7 bar) maintained equal inlet supply pressure.

For Emergency Eye Wash Stations. For single or multiple fixture installation, Rada Z358-20 will control accurately at flow rates from 20 gpm (76 lpm) to below 1 gpm (3.8 lpm).

In flow applications between 20 gpm (76 lpm) and 10 gpm (38 lpm), Z358-20 will pass approximately 50% of original flow setting in hot failure mode.

In flow applications between 10 gpm (38 lpm) and 5 gpm (19 lpm), Z358-20 will pass approximately 80% of original flow setting in hot failure mode.

In flow applications below 5 gpm (19 lpm), Z358-20 will pass approximately 95% 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 Z358-20 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.

Rada Z358-20-FMC

Rada Z358-20-FMC is a Thermostatic Mixing Valve for remote/secure cabinet mount. This product has been designed specifically to provide tepid water to emergency fixtures as detailed in ANSI Z358.1-1998 specifications.

Rada Z358-20-FMC is supplied as standard* fully assembled and pressure- tested, in an 26" x 30" x 10" stainless steel recessed cabinet with a 2" flange. Cabinet has a polished
stainless steel piano-hinged door with a keyed cylinder lock.

Rada Z358-20-FMC is supplied as standard under this model number for top inlet hot and cold water supplies and a top outlet with a left-hand hinged door as indicated in the picture and drawing.

Rada Z358-20-FMC can be specified/ordered with the following piping configurations under the following model numbers.

Top inlets/bottom outlet Z358-20-FMC-TB
Bottom inlets/bottom outlet Z358-20-FMC-BB
Bottom inlets/top outlet Z358-20-FMC-BT

*Note cabinet options under technical specifications.