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FLOWROX PV 80 - User Manual

FLOWROX PV 80
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PVPVE-190911-EN
Installation, operation, and maintenance
instructions for Flowrox valves
Open Valve (PV) & Enclosed Valve (PVE)
NOTE
These instructions must be read carefully and understood
prior to the installation, use, and servicing of this
product.
FLOWROX OY
P.O. Box 338
FI-53101 Lappeenranta, Finland
Tel. +358 (0)201 113 311, fax +358 (0)201 113 300
E-mail: sales@flowrox.com
Web: www.flowrox.com

Table of Contents

Questions and Answers

  • H
    hillcarrieAug 12, 2025
    What to do if there is leakage through FLOWROX Control Unit valve when closed?
    • W
      william91Aug 12, 2025
      If the FLOWROX Control Unit valve leaks when it should be closed, several factors could be at play. It might be due to sleeve breakage, in which case you should check by the plug, change, and adjust the sleeve (models PVE, PVS). Another cause could be that the sleeve isn't closed with sufficient squeeze. For manual valves, try tightening the handwheel. If you're using pneumatic or hydraulic actuators, verify the cylinder's supply pressure; if it's too low, the sleeve won't squeeze properly, so check the compactness of the cylinder seals. Finally, the sleeve might be wrongly adjusted, so ensure you make the necessary adjustments.
  • J
    John FitzpatrickAug 26, 2025
    How to fix a FLOWROX PV 80 valve that leaks into the environment?
    • J
      Javier PorterAug 26, 2025
      If your FLOWROX Control Unit valve is leaking into the environment, it might be caused by sleeve breakage, in which case you should change and make adjustment of the sleeve. Alternatively, the end flanges might be loosely tightened; in this case, tighten the flange end screws.
  • E
    Elizabeth RomanSep 2, 2025
    What to do if FLOWROX Control Unit sleeve is flapping or flow capacity is not sufficient?
    • M
      Melissa CameronSep 2, 2025
      If the sleeve in your FLOWROX Control Unit is flapping and/or the flow capacity is insufficient, it could be due to vacuum or pressure shocks in the pipeline, or the rubber may have hardened and isn't opening fully. To address this, check that the opening tags are fixed.
  • M
    milesmicheleNov 17, 2025
    Why is the FLOWROX PV 80 sleeve lifetime shorter than before?
    • J
      Jacqueline LaneNov 17, 2025
      If the sleeve in your FLOWROX Control Unit is experiencing a shorter lifespan than usual, several factors may be contributing. It could be that the sleeve isn't closing with enough squeeze. For manual valves, try tightening the handwheel. If you have pneumatic or hydraulic actuators, check the cylinder's supply pressure; if it's too low, the sleeve won't squeeze properly, so check the compactness of the cylinder sealings. Another potential cause is incorrect sleeve adjustment, so make the necessary adjustments. For pneumatic valves, ensure the end cushioning in the front end-block of the cylinder is fully open and check the adjustment of the pneumatic spring. Also, changes in your process, such as the medium's composition, temperature, or flow capacity, might be affecting the sleeve. In th...

FLOWROX PV 80 Specifications

General IconGeneral
BrandFLOWROX
ModelPV 80
CategoryControl Unit
LanguageEnglish