Popp Secure Flow Stop.

Popp Secure Flow Stop was developed to close valves in case of alarm via Z-Wave. It is powered by Popp Z-Wave technology.

Before purchasing make sure to contact your Z-Wave Gateway/Controller manufacturer to determine if this device is compatible, typically most Z-Wave gateways will be generically compatible to Switch type devices. The
technical specifications of Secure Flow Stop can be viewed at that link.

Familiarize yourself with your Secure Flow Stop.


Quick start.


Getting your Secure Flow Stop up and running is a little bit more complex and will require you to have some knowledge before installation, you should not need to dismantle your existing installation of water or gas supply. The following instructions tell you how to add your Secure Flow Stop  to your Z-Wave network using an existing gateway. 

Installing Flow Stop:

  1. Connect the two small mounting plate to the right and the left hand side of the mounting hole of the plastic enclosure using the screw that comes with the two minting plates. If your pipe is very thin you may want to mount them together to narrow the gap between the two angled pieces of the mounting place.
  2. You need to find the best position of the flow stop to mount. On one hand the angled parts of the mounting plates shall sit tightly on the pipe or the connecting part of the valve itself. On the other hand the rotating axis of the rocker arm needs to sit right above the rotating axis of the valve itself. Is the two rotating axis are not inline operating the flow stop electrically may damage the mechanics. 
  3. The Rocker arm needs to "grab" the handle of the valve in order to move it. There are a few possible options to adapt the position of the Flow Stop on top of the valve:
    1. Adapter the inner gap of the rocker arm
    2. Move the 2 mounting plates
    3. You can change the distance of the 2 mounting plates by having the plastic hole of the enclosure between them or on the side.

(Warning) There are 2 constraints to pay attention to:

  1. Never move the rocker arm without disconnecting the clutch by pulling the ring on the lower side of the enclosure.
  2. Make sure that the rotating axis of the flow stop is in line with the rotating axis of the valve.

Z-Wave Installation using an existing gateway:

1. Place your gateway or controller into Z-Wave pair or inclusion mode. (Please refer to your controller/gateway manual on how to do this)

2. Press the red button 2x times within 1 second on Secure Flow Stop. (Press 3x times within 1 second for secure inclusion).

3. Your gateway should confirm if Secure Flow Stop is successfully included into your network.


LED Indicator Status.


When unpaired: The LED of Secure Stop Flow will blink its LED.

When paired: The LED of Secure Stop Flow will follow the status of itself. If the Stop Flow is OPEN, then the LED will be ON. If the Stop Flow is CLOSED, then the LED will be OFF. This is configurable via Parameter 0.

Product Usage.

Secure Flow Stop controls are configurable using Parameter 1, by default below are the use of Secure Flow Stop.

Z-Wave Wireless Control.

This device will appear a simple ON or OFF switch in your Z-Wave hub/controller interface. Turning ON will OPEN the valve, while turning it OFF will CLOSE the valve.

Local Operation.

The red button that acts as an inclusion button will also act as an open/close for manual operation. Tapping this button will toggle OPEN/CLOSE.

Mechanical Overwrite.

This will allow you to open or close the value in the case of a power failure.

  1. Disconnect the valve using the internal clutch by pulling the ring.
  2. Keep the ring pulled while moving the handle.
    • Never move the handle without having the clutch disconnected, this can destroy the device at worst.
    • This will not work if there is power to Secure Flow Stop.

Advanced functions.

Removing your Secure Flow Stop from a Z-Wave network.

Your Secure Flow Stop can be removed from your Z-Wave network at any time.You’ll need to use a Z-Wave primary controller to do this and the following instructions which will tell you how to do this using your existing Z-Wave Network.

This method can be used with any Primary Z-Wave Controller even if it is not directly paired to Secure Flow Stop.

Using an existing gateway:

1. Place your gateway or controller into Z-Wave unpair or exclusion mode. (Please refer to your controller/gateway manual on how to do this)

2. Press the Red Button 3x times within 1 second on Secure Flow Stop.

3. Your gateway should confirm if Secure Flow Stop is successfully excluded from your network.

Reset your Flow Stop

Use this procedure only when the network primary controller is missing or otherwise inoperable. 

To reset the device keep the inclusion button pushed for 10 seconds.


Association Groups.

Group Association is a specific function in Z-Wave that allows you to tell Secure Flow Stop who it can speak to. Some devices may only have 1 group association meant for the gateway, or multiple group associations that can be used for specific events. This type of function isn't used too often, but when it is available, you may be able to use it to directly communicate to Z-Wave devices instead of controlling a scene within a gateway which can have unforeseen delays.

Some gateways have the ability to set Group Associations to devices that have these special events and functions. Typically this is used to allow your gateway to update the status of Secure Flow Stop instantly.

By default, your primary gateway should have been associated to Secure Flow Stop automatically during the pairing of your Switch. For any case you have a Secondary Z-Wave Controller, you'll need to associate it to your Secure Flow Stop in order for your secondary controller to update its status.

Group NumberMaximum NodesDescription
210Local Valve

Configuration Parameters.

Parameter 0: LED activity.

Change how LED reacts when Valve is open or closed.

Size: 1 byte, Default Value: 0

0LED on when operation is OFF
1LED off when operation is ON

Parameter 1: Shut off controller behavior

The parameter defines how to control the shut-off controller.

Size: 1 byte, Default Value: 0

0Z-Wave and Manual control
1Z-Wave control only
2Z-Wave opens only; Manual closing only.
3Z-Wave closes only; Manual opens only.
4Manual open/close only.

Other solutions

Technical specifications of Secure Flow Stop

German user guide