Motor Servo for Angled Seat Valves

Version: 1.0.0

Product Description

The motor drive designed for angle seat valves, specifically KFR valves, offers a solution for seamlessly retrofitting existing shut-off valves into remotely controlled intelligent devices. This process is achieved without the need to interrupt water supply or cut into the water pipe. The 12V-powered motor is not only water-resistant but also resistant to dirt, ensuring durability up to the power supply. Versatility is achieved through various adapter rings and a sophisticated connection system, allowing the motor to be compatible with modern angle seat valves featuring raising or non-raising stems, ranging from DN15 to DN32.

Incorporating an additional water sensor directly connected to the device enhances functionality, enabling the motor to serve as a leak protection system without the need for further configuration or wireless connectivity. The servo motor's waterproof design makes it suitable for deployment in damp, dirty, and outdoor environments. In its open state, the motor autonomously conducts valve training weekly, involving a closing/opening action by 1/8 turn to remove dirt and scale.

Control is facilitated through local buttons, and remote operation is achieved through LoRaWAN commands. The device functions as a LoRaWAN Class C device, necessitating LoRaWAN network coverage for optimal performance. In the absence of existing coverage, the alternative is to set up and operate a dedicated LoRaWAN gateway.

Beside this the device can be connected directly to Aqua-Scope Leakage Monitors.


Handwheel (H) Inner Coupling (K) Adapter (Ax) Distance Rings (D1,D2)
Ball Bearing Seat (Ws) Motor (M) Main Body (G) Bracket (N)


The motorized actuator can be used with all commercially available angle seat valves. However, due to the variety of mechanics, certain adaptations must be made. For installation, leave the valve open or rotate it to the open position. Plumbers recommend that the valve is fully opened first and then lightly closed by turning it clockwise approximately 2 turns.

  1. Remove the center screw from the hand wheel. Some manufacturers do not use the typical green handwheel. However, the metal stem is always hidden under the plastic. Keep the screw for future use.
  2. Remove the handwheel.
  3. Select one of the 4 adapters (A1...A4) for wrench size M17, M22, M27, or M30 that fits snugly on the bottom of the valve bonnet (hexagonal or rectangular shape). If none of the supplied adapters fit the valve, please take a picture, and send it to This helps us to develop and manufacture adapters for valves we don't know yet. In the meantime, there is a solution to the problem. See section 'Make an adapter if no adapter fits' below for instructions.
  4. Select the correct ball bearing seat (W1 ... W3) and place it on the stem. If your stem is larger than the 8x8 mm required by the largest bearing seat, the KFR cannot be used on your valve. If your stem is even smaller than the smallest ball bearing seat of 6x6 mm, you can solve the problem in the same way as for the adapter. See instructions below.
  5. Tighten the ball bearing seat with the screw from step 1.
  6. Depending on the size of the valve bonnet and stem, you may need additional distance rings (D1, D2) on top of the adapter ring. If the inner coupling (K) cannot be pushed all the way into the main body (G) without sitting on the valve body, or if the main body cannot be connected to the adapter ring already installed, a distance ring (D1 or D2) must be placed between the adapter ring (Ax) and the main body (G). This is usually the case with rising stem valves. The spacers are 12 or 24 mm, and they can be combined. Use the spare handwheel to open and close the valve for verification.
  7. Place the housing on top of the adapter or distance ring.
  8. Place the inner coupling in the housing. It must pass over the ball bearings in both the open and closed positions. The housing is clear to check this. If it does not fit, use other distance rings in step 6. Please use the spare handwheel to open and close the valve to check.
  9. The bracket is required to hold the entire assembly in place if the valve is not installed in an upright position. It is recommended that the bracket be used in any case. Tighten around the pipe using the two zip ties provided. You can remove the zip ties at any time.
  10. Finally, place the motor on top of the housing. You may need to turn the inner coupling a little if the motor does not fit right away.

Make an adapter if no adapter fits

The product is supplied with a portion of epoxy. This is a two-part mixture. Mix the two components by kneading until the mass has a similar color. Select an adapter ring that just fits over the base structure of the valve bonnet and fill the gaps with the prepared epoxy. Allow the epoxy to cure. Note that the epoxy will adhere to the metal body. If you do not want the epoxy to stick, coat the metal body with some oil to allow easy removal of the epoxy filled adapter.

In the same way, you can put epoxy in one of the bearing seats if your stem is smaller than the is smaller than the 6x6mm of the smallest seat. Make sure the stem is positioned right in the centre of the ball bearing seat.

Valves from Wilhelm Ewe GmbH & Co. KG

This company's valves have a very special design. You must insert the split ring (E1+E2) into the 24 mm distance ring (D1) instead of using one of the adapters A1 ... A4. No further distance ring is needed but a small ring DE must be placed below the ball bearing seat to hold down the large fat chamber.

External Flood Sensor

The unit allows an optional wired flood sensor to be attached. There is a connector on the power cord next to the motor. Remove the blue protective pad and plug in the sensor. Please use some force to push the connector to ensure a waterproof connection. If the sensor head detects water, a flood alarm will sound, the valve will close, and the alarm will be indicated by a buzzer and LEDs. Once the sensor head is free of water, you can clear the alarm by pressing the button for 2 seconds. It is also possible to clear the alarm with a wireless LORA command. In both cases, an Alarm Clear report is sent uplink to the LORA network.

Manually Operating the motor

You can open or close the valve by briefly pressing the button. If you press the button while the motor is running, the motor stops moving and will reverse direction with next push.

The unit must be calibrated to recognize the end positions of the valve. Once these end positions are known, the motor will stop softly at that position and not "slam into the wall" to protect the mechanics and ensure long life and reliable operation. After power up, the unit will make some short movements to determine if the last position was open or close. The first open or close operation is used to perform calibration for both end points. No special user interaction is required for calibration.

Connect to LORA network

Please register the device with its three keys with your LoRaWAN server before you use it. before using it. The device EUI is printed on the device. Enter this key and your registered email address to to obtain the missing keys. The email address is the account email from Aqua-Scope Shop purchases or the data is provided by your point of sale. If there is no LoRaWAN network or the LORA keys are not registered in the key, the LoRaWAN joining process will fail. LoRaWAN connection will fail after about 25 seconds and the device will automatically switch to LoRaP2P mode for connection to the Aqua-Scope Monitor. Please note that the device always tries to join a LoRaWAN network after power on.


The unit has a two-color LED with the following meaning

LoRaWAN Payload Commands (Payload Format)

LoRaWAN commands can be daisy chained into the payload up to the defined maximum payload size of 51 bytes. This mean that for all commands sent to defined number of bytes in the payload is required to avoid misinterpretation of command and/or command values in the receiver side. All uplink and downlink commands use FPort=10.

LoRaWAN Sensor Types

The following sensor types are supported by the Aqua-Scope Monitor.

LoRaWAN Valve Positions for Command 0x07

LoRaWAN Alarm Types

The following alarmtypes are supported.

LoRaWAN Configuration Parameters

All Configuration Parameters are 2 Byte values that can be set and read out using LoRaWAN 'Configuration Get' and 'Configuration Set' commands.

Scope of Delivery

Technical Data

Support and Contact

Should you encounter any problem, please give us the opportunity to address it before returning this product. Please check our website and particularly the support section for answers and help. You can also send a message to

While the information in this manual has been compiled with great care, it may not be deemed an assurance of product characteristics. Aqua-Scope shall be liable only to the degree specified in the terms of sale and delivery. The reproduction and distribution of the documentation and software supplied with this product and the use of its contents is subject to written authorization from Aqua-Scope. We reserve the right to make any alterations that arise as the result of technical development.

Declaration of Conformity

Aqua-Scope Technology OÜ, Sakala 7-2, 10141 Tallinn, Republic of Estonia, declares that this radio emitting device works on the following frequences:

Български С настоящото Aqua-Scope Technology OÜ декларира, че този тип радиосъоръжение KFRLWE01 е в съответств ие с Директива 2014/53/ЕС. Цялостният текст на ЕС декларацията за съответствие може да се намери н а следния интернет адрес:

Čeština Tímto Aqua-Scope Technology OÜ prohlašuje, že typ rádiového zařízení KFRLWE01 je v souladu se směrnicí 2014/53/EU. Úplné znění EU prohlášení o shodě je k dispozici na této internetové adrese:

Dansk Hermed erklærer Aqua-Scope Technology OÜ, at radioudstyrstypen KFRLWE01 er i overensstemmelse med direktiv 2014/53/EU. EUoverensstemmelseserklæringens fulde tekst kan findes p følgende internetadresse:

Deutsch Hiermit erklärt Aqua-Scope Technology OÜ, dass der Funkanlagentyp KFRLWE01 der Richtlinie 2014/53/EU entspricht. Der vollständige Text der EU-Konformitätserklärung ist unter der folgenden Internetadresse verfügbar:

Eesti Käesolevaga deklareerib Aqua-Scope Technology OÜ, et kesolev raadioseadme tp KFRLWE01 vastab direktiivi 2014/53/EL nuetele. ELi vastavusdeklaratsiooni tielik tekst on kttesaadav jrgmisel internetiaadressil:

English Hereby, Aqua-Scope Technology OÜ declares that the radio equipment type KFRLWE01 is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address:

Español Por la presente, Aqua-Scope Technology OÜ declara que el tipo de equipo radioeléctrico KFRLWE01 es conforme con la Directiva 2014/53/UE. El texto completo de la declaracin UE de conformidad está disponible en la direccin Internet siguiente:

Ελληνικά Με την παρούσα ο/η Aqua-Scope Technology OÜ, δηλώνει ότι ο ραδιοεξοπλισμός KFRLWE01 πληροί την οδηγία 2014/53/ΕΕ. Το πλήρες κείμενο της δήλωσης συμμόρ φωσης ΕΕ διατίθεται στην ακόλουθη ιστοσελίδα στο διαδίκτυο:

Français Le soussigné, Aqua-Scope Technology OÜ, déclare que l'équipement radioélectrique du type KFRLWE01 est conforme la directive 2014/53/UE. Le texte complet de la déclaration UE de conformité est disponible l'adresse internet suivante:

Hrvatski Aqua-Scope Technology OÜ ovime izjavljuje da je radijska oprema tipa KFRLWE01 u skladu s Direktivom 2014/53/EU. Cjeloviti tekst EU izjave o sukladnosti dostupan je na sljedećoj internetskoj adresi:

Italiano Il fabbricante, Aqua-Scope Technology OÜ, dichiara che il tipo di apparecchiatura radio KFRLWE01 conforme alla direttiva 2014/53/UE. Il testo completo della dichiarazione di conformit UE disponibile al seguente indirizzo Internet:

Latviešu Ar šo Aqua-Scope Technology OÜ deklarē, ka radioiekārta KFRLWE01 atbilst Direktīvai 2014/53/ES. Pilns ES atbilstības deklarācijas teksts ir pieejams šādā interneta v ietnē: Lietuvių Aš, Aqua-Scope Technology OÜ, patvirtinu, kad radijo įrenginių tipas KFRLWE01 atitinka Direktyvą 2014/53/ES. Visas ES atitikties deklaracijos tekstas prieinamas šiuo internet adresu:

Magyar Aqua-Scope Technology OÜ igazolja, hogy a KFRLWE01 típus rádiberendezés megfelel a 2014/53/EU irányelvnek. Az EUmegfelelőségi nyilatkozat teljes szövege elérhető a következő internetes címen:

Malti B'dan, Aqua-Scope Technology OÜ, niddikjara li dan it-tip ta' tagħmir tar-radju KFRLWE01 huwa konformi madDirettiva 2014/53/UE. It-test kollu tad-dikjarazzjoni ta' konformit tal-UE huwa disponibbli f'dan l-indirizz talInternet li ġej:

Nederlands Hierbij verklaar ik, Aqua-Scope Technology OÜ, dat het type radioapparatuur KFRLWE01 conform is met Richtlijn 2014/53/EU. De volledige tekst van de EUconformiteitsverklaring kan worden geraadpleegd op het volgende internetadres:

Polski Aqua-Scope Technology OÜ niniejszym oświadcza, że typ urządzenia radiowego KFRLWE01 jest zgodny z dyrektywą 2014/53/UE. Pełny tekst deklaracji zgodnośc I UE jest dostępny pod następującym adre sem internetowym:

Português O(a) abaixo assinado(a) Aqua-Scope Technology OÜ declara que o presente tipo de equipamento de rádio KFRLWE01 está em conformidade com a Diretiva 2014/53/UE. O texto integral da declarao de conformidade está disponível no seguinte endereo de Internet:

Română Prin prezenta Aqua-Scope Technology OÜ declară că tipul de echipamente KFRLWE01 este în conformitate cu Directiva 2014/53/UE. Textul integral al declarației UE de conformitate este disponibil la următoarea adresă internet:

Slovensko Aqua-Scope Technology OÜ potrjuje, da je tip radijske opreme KFRLWE01 skladen z irektivo 2014/53/EU. Celotno besedilo izjave EU o skladnosti je na voljo na naslednjem spletnem naslovu:

Slovensky Aqua-Scope Technology OÜ týmto vyhlasuje, že rádiové zariadenie typu KFRLWE01 je v slade so smernicou 2014/53/EÚ. Úplné EÚ vyhlásenie o zhode je k dispozícii na tejto internetovej adrese:

Soumi Aqua-Scope Technology OÜ vakuuttaa, että radiolaitetyyppi KFRLWE01 on direktiivin 2014/53/EU mukainen. EUvaatimustenmukaisuusvakuutuksen täysimittainen teksti on saatavilla seuraavassa internetosoitteessa:

Svenska Härmed försäkrar Aqua-Scope Technology OÜ att denna typ av radioutrustning KFRLWE01 verensstmmer med direktiv 2014/53/EU. Den fullständiga texten till EUförsäkran om verensstämmelse finns på följande webbadress:

Disposal Guidelines

Do not dispose of electrical appliances as unsorted municipal waste, use separate collection facilities. Contact your local government for information regarding the collection systems available. If electrical appliances are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging health and well-being.