InterApp Desponia and Desponia plus Butterfly Valve Operation, Installation and Maintenance Manual

This manual covers the operation, installation, and maintenance of InterApp Desponia and Desponia plus butterfly valves in accordance with EN 161.

Brand: InterApp
Document type: User Manual
Language: English
Pages: 14
File format: PDF
File size: 511 KB
Published: 14 October, 2026
Updated: 14 October, 2026
MD5 checksum: 9E8A11DB31D5D5D9704CBA8FB27010A0
PDF: InterApp Desponia and Desponia plus Butterfly Valve Operation, Installation and Maintenance Manual PDF

About this manual

This document serves as an official guide for the installation, operation, and maintenance of InterApp butterfly valve models Desponia® and Desponia® plus. It outlines compliance requirements such as EN 161, safety protocols for operators, and specific instructions regarding transport and storage to ensure proper functionality.

What's inside

Introduction
Intended Use
Configuration
Safety Information
Transport and Storage
Installation
Functional Tests
Operation and Maintenance
Troubleshooting

Specifications

Ambient temperature range	-20ºC up to +60ºC
Opening and closing time	Less than one second for all sizes between DN 50 and DN 250
Valve Class	Class A

Frequently asked questions

What is the maximum allowable pressure at room temperature?

The specific maximum allowable pressure (PS) varies by model and is indicated on the valve label.

What input signal is required for a safe shutdown?

According to EN 161, the input signal must be 0-20 mA; a 4 mA trip signal is not allowed.

How often should the liner be replaced based on cycles?

For sizes DN 50 to 80, replace after 100,000 cycles; for DN 80 to 150, after 50,000 cycles.

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