Industrial / Electrical
Installation Guide for Danfoss Service Kits
A comprehensive visual installation and service guide for Danfoss valve service kits. This manual provides essential torque specifications, material codes, and step-by-step procedures for component replacement across various valve models.
Table of contents
Quick guide from the manual
This document serves as a visual installation and service guide for Danfoss valve service kits. It provides step-by-step instructions for the disassembly, maintenance, and reassembly of various valve types, including AVP, AVPQ, AVPA, AVA, AVDS, SAVA, SAVD, AVPBT, AVPQT, VG, VGS, and STL series. The guide is primarily visual, using pictograms to illustrate the necessary actions.
Technical specifications and torque settings
Before performing any service, ensure you have identified the correct valve model, PN (Pressure Nominal), and DN (Diameter Nominal). The guide specifies two material codes for components:
- M1: CuSn5ZnPb (Rg5)
- M2: EN-GJS-400-18-LT (GGG 40.3)
Proper torque application is critical for valve integrity. Refer to the torque specifications provided in the guide:
- 14 Nm: Use SW 12 wrench.
- 35 Nm: Use SW 41, SW 50, or SW 55 wrenches depending on the specific model.
- 45 Nm: Use SW 42, SW 50, or SW 55 wrenches depending on the specific model.
- 25 Nm: Use SW 32 wrench for AMV(E) actuators.
General installation and service procedure
The service procedures follow a consistent visual logic across all models:
- Preparation: Ensure the system is depressurized and the valve is accessible.
- Disassembly: Follow the numbered sequence (1, 2, 3...) to remove the actuator or valve insert. Use the specified wrench sizes as indicated in the diagrams.
- Replacement: Components marked with the NEW icon must be replaced with new parts from the service kit.
- Reassembly: Reverse the disassembly steps to install the new components. Ensure all parts are seated correctly.
- Tightening: Use a torque wrench to tighten connections to the specified Nm values shown in the diagrams.
Always verify that the service kit code matches your specific valve configuration (PN, DN, and model type) before beginning the installation.
Manufacturer information
Danfoss A/S
Practical help
Common problems
Leakage after service
Ensure all seals were replaced with new ones from the kit and that the connection was tightened to the exact torque specification (e.g., 14 Nm, 35 Nm, or 45 Nm).
Incorrect part installation
Verify the material code (M1 or M2) matches your valve body material before installation.
Difficulty in disassembly
Ensure the system is fully depressurized. Use the correct wrench size (SW 12, 32, 41, 42, 50, or 55) as indicated in the specific model diagram.
Before use
- Identify the exact valve model, PN, and DN.
- Check the material code (M1 or M2) of the valve body.
- Ensure the system is depressurized and safe to work on.
- Verify you have the correct service kit for your valve model.
- Prepare the required torque wrenches (SW 12, 32, 41, 42, 50, or 55).
- Confirm all 'NEW' marked parts are available for replacement.
Model compatibility
- Service kits are specific to valve model, PN, and DN.
- Ensure the material code (M1/M2) matches the existing valve body.
- Refer to the table on page 1 to match your valve model to the correct service kit code.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.