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For reversed flow direction

For reversed flow direction

Thermostatic valve body with presetting or automatic flow limitation

The thermostatic valve bodies for reversed flow direction can be used in two-pipe pump heating systems for interchangeable supply and return flow (hammering noises). The valve bodies can be mounted into the return flow connection of radiators in a raised position or tall radiators. This makes the thermostatic head more easily accessible.
Technical SpecificationsAccessories_spare_parts_TRVs_EN_lq.pdf
Technical SpecificationsFor-Reversed-flow-direction_EN_lq.pdf

Product branding

imi_heimeier

Features and Benefits

Installation with interchanged supply and return pipe
Prevents hammering noises

V-exact II models with precision presetting
For exact hydraulic balancing

Eclipse models with automatic flow limitation
For automatic hydronic balancing

Valve body in gunmetal
Corrosion-resistant and safe

Applications

Heating and cooling systems.

Functions

Control

Flow limitation

Prevents hammering noises with interchanged supply and return pipe

Shut-off

Stepless presetting (V-exact II)

Pressure class [PN]

PN 10

Differential pressure (ΔpV)

Differential pressure (ΔpV) Eclipse:

Max. differential pressure:
60 kPa (<30 dB(A))
Min. differential pressure:
10 – 100 l/h = 10 kPa
100 – 150 l/h = 15 kPa

Flow range

Flow range Eclipse:

The flow can be stepless pre-set within the range: 10-150 l/h.
Delivery setting: Commissioning
(Max. nominal flow qmN at 10 kPa respecting EN 215: 115 l/h)

Temperature

Max. working temperature: 120°C, with protection cap or actuator 100°C.

Min. working temperature: -10°C

Connection to thermostatic head and actuator

IMI Heimeier M30x1,5

Pipe connection

The internal-threaded version for connection to threaded pipe, or in conjunction with compression fittings, to copper precision steel or multi-layer pipe (only DN 15).

Material

Valve body: Corrosion resistant Gunmetal
O-rings: EPDM rubber
Valve disc: EPDM rubber
Return spring: Stainless steel
Valve insert: Brass, PPS and SPS (syndiotactic polystyrene)
The complete thermostatic insert can be replaced using the fitting tool without draining the system.
Spindle: Niro-steel spindle with double O-ring sealing. The outer O-ring can be replaced under pressure (V-exact II).

Surface treatment

Valve body and fittings are nickel-plated.

The table below assists you in finding the relevant product based on its variant. For more details, please download the datasheet above.

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