Overview

This technical catalog provides detailed information on a low maintenance membrane actuator valve controlled by air or inert gases. It covers various valve types including normally closed (NC), normally open (NO), and double acting (DA) control functions. The catalog is intended for medium wetted parts and high-grade plastic materials suitable for specific applications.

Valve Description and Features

• The valve's chemical resistance depends on the type of fluid, temperature, pressure, and valve materials.
• Valve design includes a membrane actuator, base, and mounting flange with actuator housing made of high-grade plastic materials.
• Control functions available: Normally Closed (NC), Normally Open (NO), and Double Acting (DA).
• Optimized flow path due to body design.
• Perpendicular circular or oval seat design of the body.
• Stainless steel mounting inserts designed to support the valve.
• Support for membrane actuator with a diaphragm made of EPDM, NBR, or FKM.
• Standard handwheel and optional solenoid valve (3/2, 5/2, or 3/2 backflow) for valve actuation.
• Membrane in EPDM, NBR, or FKM supports medium with possible aggressive chemical fluids.
• Standard handwheel and optional solenoid valve for actuation.

Technical Specifications

• Valve sizes (DN): 15, 20, 25, 32, 40, 50
• Maximum working pressure: Pressure mass limit for the valve is specified (exact values not fully clear from text).
• Flow rate coefficient (Kv) and flow rate efficiency coefficients are provided for different valve sizes.
• Materials include high-grade plastics and stainless steel components.
• Membrane materials: EPDM, NBR, FKM depending on application requirements.

Dimensional Data and Weight

The catalog includes detailed dimensional tables for various valve codes and sizes, specifying parameters such as diameter (d), length (L), height (H), flange dimensions, and weights in grams. These dimensions are critical for installation and compatibility with piping systems.

Installation and Usage Recommendations

• Valve chemical resistance should be verified against the fluid type, temperature, and pressure conditions.
• Valve actuation can be manual via handwheel or automated via solenoid valves.
• All instructions and illustrations are for guidance only and do not constitute a sale by description.
• Users must verify any reliance on this publication at their own risk.
• Copies of this publication belong to Polyslip Italia and cannot be used, copied, or reproduced without prior consent.

Additional Notes

Information is provided "as is" as of the revision date and updates will not be issued automatically. The catalog emphasizes the importance of verifying chemical compatibility and installation parameters before use.