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TA-Modulator

The new uniquely shaped EQM characteristics provide highly precise temperature control. The valve is compatible with linear, proportional or 3-point actuators. A built-in differential pressure controller provides high control authority, control stability and automatic limitation of design flow. Measurement of flow and available pressure enables system optimisation and diagnostics.

Product Information

Pressure independent balancing and control valve for modulating control

The new uniquely shaped EQM characteristics provide highly precise temperature control. The valve is compatible with linear, proportional or 3-point actuators. A built-in differential pressure controller provides high control authority, control stability and automatic limitation of design flow. Measurement of flow and available pressure enables system optimisation and diagnostics.

Key features

Precise temperature control

Provide uniquely shaped EQM characteristic for best modulating control.

Precise control

Uniquely shaped EQM characteristic provides an up to 6 times larger operating stroke than linear valves.

Quick hydronic balancing

Automatic flow limitation when actuator is fully open protects entire system against overflows.

Easy troubleshooting

Flow and differential pressure measuring helps to reduce pump consumption and provides all necessary data for system diagnostics.

Technical description

Application:

Heating and cooling systems.

Functions:

Control (EQM)
Pre-setting (max. flow)
Differential pressure control
Measuring (ΔH, t, q)
Isolation (for use during system maintenance – see "Leakage rate")

Dimensions:

DN 15-80

Pressure class:

DN 15-50: PN 16
DN 65-80: PN 16, PN 25

Differential pressure (ΔpV):

Max. differential pressure (ΔpVmax):
DN 15-32: 600 kPa = 6 bar
DN 15-25: 400 kPa = 4 bar*
DN 40-50: 400 kPa = 4 bar
DN 65-80: 800 kPa = 8 bar
Min. differential pressure (ΔpVmin):
DN 15-20: 15 kPa = 0.15 bar
DN 25-32: 23 kPa = 0.23 bar
DN 40-80: 30 kPa = 0.30 bar
(Valid for maximum setting, fully open. Other settings will require lower differential pressure, check with the software HySelect.)

ΔpVmax = The maximum allowed pressure drop over the valve to fulfill all stated performances.

ΔpVmin = The minimum recommended pressure drop over the valve, for proper differential pressure control.

*) With Δp insert in PPS.

Flow range:

The flow (qmax) can be set within the range:

DN 15: 92 - 480 l/h
DN 20: 200 - 975 l/h
DN 25: 340 - 1750 l/h
DN 32: 720 - 3600 l/h
DN 40: 1000 - 6500 l/h
DN 50: 2150 - 11200 l/h
DN 65: 4200 - 24100 l/h
DN 80: 5900 - 37300 l/h

qmax = l/h at each setting and fully open valve plug.

Temperature:

DN 15-32, DN 65-80:
Max. working temperature: 120°C
Min. working temperature: -20°C
DN 15-25 with Δp insert in PPS, DN 40-50:
Max. working temperature: 90°C
Min. working temperature: -10°C

Media:

Water or neutral fluids, water-glycol mixtures (0-57%).

(For other media contact IMI Hydronic Engineering.)

Lift:

DN 15-20: 4 mm
DN 25-32: 6,5 mm
DN 40-50: 15 mm
DN 65-80: 20 mm

Rangeability:

DN 15-32: >75
DN 40-80: >125

Leakage rate:

Leakage flow ≤ 0.01% of max. qmax (max. setting) and correct flow direction. (Class IV according to EN 60534-4).

Characteristics:

Uniquely shaped EQM, best suited for modulating control.

Material:

DN 15-32:
Valve body: AMETAL®
Valve insert: AMETAL® and PPS
Valve plug: Stainless steel
Spindle: Stainless steel
Spindle seal: EPDM O-ring
Δp insert: PPS and AMETAL® or PPS
Membrane: EPDM
Springs: Stainless steel
O-rings: EPDM
DN 40-50:
Valve body: AMETAL®
Valve insert: AMETAL®
Valve plug: AMETAL® and PTFE
Spindle: Stainless steel
Spindle seal: EPDM O-ring
Δp insert: PPS
Membrane: EPDM
Springs: Stainless steel
O-rings: EPDM
DN 65-80:
Valve body: Ductile iron EN-GJS-400
Valve insert: Ductile iron EN-GJS-400 and brass
Valve plug: Stainless steel and EPDM O-ring
Valve seat: Stainless steel
Spindle: Stainless steel
Spindle seal: EPDM
Δp insert: Ductile iron EN-GJS-400, stainless steel and brass.
Membrane: Reinforced EPDM
Springs: Stainless steel
O-rings: EPDM


AMETAL® is the dezincification resistant alloy of IMI Hydronic Engineering.

Surface treatment:

DN 32-50: Non treated
DN 65-80: Electrophoretic painting

Marking:

Black identification ring on measuring point: TA-Modulator and DN.
DN 15-32: TA, IMI, PN, DN and flow direction arrow. Grey setting wheel.
DN 40-50: IMI TA, PN, DN, inch size, Country of origin and flow direction arrow. Orange setting wheel.
DN 65-80: IMI TA, DN, inch size, material and flow direction arrow. Label with technical specification, Country of origin and CE. Orange setting wheel.

Connection:

DN 15-50: Male thread according to ISO 228.
DN 65-80: Flanges according to EN-1092-2, type 21. Face to face length according to EN 558, series 1.

Connection to actuator:

DN 15-32: M30x1.5, push
DN 40-50: M30x1.5, push/pull
DN 65-80: 2xM8, push/pull

Actuators:

DN 15-20: TA-Slider 160, EMO TM, EMO 3 (3-point).
DN 25-32: TA-Slider 160, TA-MC50-C* (3-point).
DN 40-50: TA-Slider 500, TA-Slider 750* (3-point).
DN 65-80: TA-Slider 750, TA-MC100 FSE/FSR (fail-safe).
*) Adapter needed - see "Adapters for actuators".

For more details on actuators, see separate technical leaflets.

The products, texts, photographs, graphics and diagrams in this document may be subject to alteration by IMI Hydronic Engineering without prior notice or reasons being given. For the most up to date information about our products and specifications, please visit www.imi-hydronic.com.

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