Model E25W – Actuated – Hot/Cold Water Mixers – Emech™ Digital Control Valves

The 3-port
mixing valve utilizes ceramic shear action disc technology to provide
tight shut-off, high pressure differential capability, and long life
integrity. Fitted with the electronic actuator and integrated
temperature sensor, the system delivers high performance stand-alone
closed-loop temperature control.

With the temperature feedback signal, the actuator provides
temperature control accuracy to ± 1°F (± 0.5°C) over a 32°F – 212°F (0°C
– 100°C) control range, capable of blending from 0% to 100% of either
inlet temperature. Even with sudden changes of inlet pressure and
temperature to the valve, the actuator controller aggressively minimizes
outlet temperature variations, making the system ideal for use in
industrial applications as a simple stand-alone or integrated mixing
solution.

Valve Features

• ISO 5211, 5210 actuator flange mounting
• Ceramic discs: durable, corrosion resistant
• 1” valve flow coefficient (Cv): 12.6 mixing; 10.0 single port
• Valve constructed of C8FM (316) stainless steel
• End connection: 1” NPT inlets and 1-1/4” NPT outlet
• Elastomer seal material options are available to support NON water
  temperature control applications, e.g., glycol, hydraulic fluid
• Top entry allows inline access to internal valve parts
• Operating temperature range: -13°F to 257°F (-25°C to 125°C)
• Rated pressure: 145 psi (10 bar)
• BUBBLE TIGHT zero seat leakage shut-off (exceeds ASME B16.104 and FCI 70.2, Classes V and VI standards)
• Design verification to ASME B16.34
• U.S. patent approved

Electronic Actuator Features

• Analog (4-20mA) input and output control signals for interfacing with SCADA control
• Software configurable control settings
• Very high resolution capability (0.03° rotational)
• External RS232 connection (cable supplied)
• Stand-alone closed loop temperature control, or remote analog (4-20mA) control options
• Power: regulated 24Vdc 3.5Amp supply required
• Failsafe position feedback (non-contact absolute encoder)
• Keypad: 4 membrane switches with “dual touch” safety features
• Display: 3.5 digit LCD display with back light
• Push-button power switch
• Extra analog input for interfacing ancillary devices (e.g., flow switch, level switch)
• 90° stroke time as low as 1.5 seconds for fast control action
• Gearbox: planetary, lifetime lubrication, low backlash
• 100% duty cycle rated actuator

IMPORTANT NOTE: Further information on installation
requirements and recommendations is available in the “Installation,
Operation and Maintenance” Manual (IOM), a copy of which is provided
with the product.