½-Inch Scald Protection Valve

Product Description

½-Inch Scald Protection Valve – 00011081

The Encon 00011081 is a self-actuating ½-inch NPT scald protection valve for compatible Encon emergency shower and eyewash installations. It is the valve component used in the Encon 03900003 Scald Protection Valve Assembly with Strainer Tee.

The valve begins modulating open at approximately 98°F (36.7°C) and reaches its full-open setpoint at 105°F (40.6°C), allowing overheated water to discharge from exposed emergency-equipment piping. As cooler supply water reaches the thermal actuator, the valve typically closes at approximately 95°F (35°C).

Operation is entirely mechanical and requires no electrical power, wiring, external sensor, or control signal.

Highlights

• Valve-only replacement component for compatible Encon scald protection installations
• Used in Encon assembly 03900003
• Designed for compatible emergency shower, eyewash, and eye/facewash equipment
• Helps discharge overheated water caused by solar exposure, heat tracing, process heat, or other uncontrolled heat sources
• ½-inch NPT connections
• Begins modulating open at approximately 98°F (36.7°C)
• Full-open setpoint of 105°F (40.6°C)
• Typically closes at approximately 95°F (35°C)
• Ambient-sensing, standard-flow operation
• Self-actuating design requires no electrical power or control signal
• Corrosion-resistant 300-series stainless steel body
• Internal ram-type plug supports reliable shutoff
• Integral wrench flats support proper installation
• Maximum operating pressure of 200 psig (13.8 bar)
• Strainer tee not included

Replacement valve for compatible Encon systems

Use the 00011081 when the scald protection valve in a compatible Encon installation requires replacement and the existing strainer tee and associated fittings remain suitable for continued service.

This product includes the scald protection valve only. It does not include the Encon strainer tee, removable strainer cap, screen, strainer O-ring, close nipple, accessory tee, cross fitting, or other installation fittings.

For a complete Encon retrofit and replacement assembly that includes a serviceable 16-mesh strainer tee, specify product 03900003.

How the temperature-controlled valve operates

Emergency shower and eyewash piping exposed to direct sunlight, steam tracing, electric heat tracing, nearby process equipment, or other uncontrolled heat sources can retain water at elevated temperatures.

In the standard-flow configuration, the valve’s internal thermal actuator initially responds to the ambient temperature surrounding the valve. The valve begins modulating open at approximately 98°F (36.7°C) and reaches its full-open setpoint at 105°F (40.6°C), establishing discharge flow.

After flow begins, the actuator responds to the temperature of the water passing through the valve. Cooler supply water backfills the piping, and the valve typically modulates closed at approximately 95°F (35°C).

This automatic cycle helps remove overheated water from exposed piping without relying on personnel to operate a manual drain valve.

Corrosion-resistant valve construction

The valve incorporates a two-piece 300-series stainless steel body with stainless steel operating components. Internal construction includes a stainless steel operating spring, ram-type plug, seat insert, EPDM seals, and an FEP-encapsulated Viton® seat seal.

The accompanying technical drawing and parts-and-materials chart identify the internal valve components and material categories. The chart describes the thermal actuator and actuator carrier as brass or 300-series stainless steel and should not be interpreted as specifying one exclusive material for every individual valve.

Construction and performance details

• SKU: 00011081
• Product type: Self-actuating scald protection valve
• Intended use: Replacement component for compatible Encon scald protection installations
• Related complete assembly: 03900003
• Connection size: ½-inch NPT
• Sensing configuration: Ambient sensing
• Flow configuration: Standard flow
• Begins modulating open: Approximately 98°F (36.7°C)
• Full-open setpoint: 105°F (40.6°C)
• Typical closing temperature: Approximately 95°F (35°C)
• Maximum operating pressure: 200 psig (13.8 bar)
• Maximum operating temperature: A range of 150°F (83.3°C) above the setpoint, not to exceed 300°F (149°C)
• Body material: 300-series stainless steel
• Internal seal materials: EPDM and FEP-encapsulated Viton®
• Diameter: 1.3 inches (33 mm)
• Length: 4.5 inches (114 mm)
• Weight: 0.9 lb (0.4 kg)
• External power required: None
• Strainer included: No

Installation and maintenance considerations

Confirm that the 00011081 is compatible with the installed Encon equipment before replacement. When the valve is installed within assembly 03900003, follow Encon IOM 01999964, Revision B for assembly orientation, station compatibility, accessory fitting requirements, installation, and station testing.

• Shut off the station water supply and relieve pressure before removing the existing valve.
• Flush the piping before installing the replacement valve.
• Observe the flow-direction arrow marked on the valve.
• When installed within the Encon 03900003 exterior-drain assembly, ensure the completed assembly’s flow arrow points downward toward the discharge location.
• Use the valve’s wrench flats and an appropriate pipe wrench during installation.
• Use an appropriate pipe-thread sealant while preventing excess sealant from entering the flow path.
• Install the valve where it is exposed to the same source of overheating as the piping requiring protection.
• Route discharge to an appropriate drain or disposal location.
• After installation, inspect all threaded connections for leakage.
• Activate the complete emergency station and verify its proper flow pattern and water volume.

Encon instructs facilities to activate plumbed emergency units weekly to flush the lines and verify proper flow pattern and volume. Maintain test records according to the facility’s inspection and compliance procedures. This weekly activation requirement applies to the complete emergency station, not to disassembly of the scald protection valve.

FAQs

Is the 00011081 a complete scald protection assembly?

No. The 00011081 is the scald protection valve only. It does not include the Encon strainer tee, screen, removable cap, O-ring, close nipple, or accessory installation fittings.

Which Encon assembly uses this valve?

The 00011081 is the valve component used in the Encon 03900003 ½-Inch Scald Protection Valve Assembly with Strainer Tee.

At what temperature does the valve begin opening?

The valve begins modulating open at approximately 98°F (36.7°C).

What is the valve’s full-open temperature?

The standard full-open setpoint is 105°F (40.6°C).

At what temperature does the valve close?

The valve typically closes at approximately 95°F (35°C) as cooler supply water reaches the thermal actuator.

What can cause water in emergency-equipment piping to overheat?

Potential heat sources include direct solar exposure, steam tracing, electric heat tracing, nearby process equipment, and other uncontrolled environmental or process heat sources.

Does the valve require electricity?

No. The valve is self-actuating and requires no electrical power, wiring, external sensor, or control signal.

Does the valve sense air temperature or water temperature?

In its standard-flow configuration, the actuator initially responds to ambient temperature. Once discharge flow begins, it responds to the temperature of the water passing through the valve.

Is a strainer included?

No. The 00011081 is supplied as the valve-only replacement component. For an Encon assembly incorporating a serviceable 16-mesh strainer tee, specify product 03900003.

What is the correct installation direction?

Follow the flow-direction arrow marked on the valve. When the valve is installed within the Encon 03900003 exterior-drain assembly, the completed assembly must be oriented with the arrow pointing downward toward the discharge location.

Is 200 psig the recommended emergency-station supply pressure?

No. The 200 psig value is the maximum operating-pressure rating of the valve component. For installations covered by Encon IOM 01999964, the recommended dynamic, or flowing, station pressure is 30–80 psi.

Does this valve replace a tempered water system?

No. The valve is intended to discharge overheated water retained in compatible emergency-equipment piping. It does not heat, cool, blend, store, or continuously provide tempered water.

Can this valve be used in any general-purpose piping system?

This product is positioned as a replacement component for compatible Encon emergency shower and eyewash scald protection installations. Confirm compatibility with Encon before using it in another configuration.

Specifications

Resources