R420D - Belimo 2-Way Open/Close Ball Valve, DN 20, External Thread, PN 40, KVS 25

£192.36 £160.30

On request

Next Supplier Stock Update: 18/04/2026

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Overview

Manuals & Datasheets

DATA-SHEET

Product type	Water Valve
Manufacturer	Belimo
Flow pattern	2-Way
Valve type	Ball Valve
Valve connection	External thread
Pressure	PN 40
DN (mm)	DN 20
Flow rate - m³/h	25 kvs

Description

R420D - Belimo 2-Way Open/Close Ball Valve, DN 20, External Thread, PN 40, KVS 25

• external thread G 1 1/4", DN 20, kvs 25
• Temperature of medium max. 130°C
• Leakage rate A-AB air bubble-tight EN 12266

Features

Mode of operation The open-close ball valve is operated by a rotary actuator. The rotary actuator is controlled by an open-close signal. The valve is opened counterclockwise and closed clockwise.

Patent Applied for.

•     Functional data Flow media Cold, warm and hot water, drinking water
•     Media temperature +2°C ... +130°C
•     Rated pressure ps 2700 kPa
•     Leakage rate A Air bubble-tight (EN 12266)
•     Pressure difference Δpmax 800 kPa
•     Closing pressure Δps 1400 kPa
•     Angle of rotation 90°<) (Operating range 15 ... 90°<)
•     Pipe connector External thread to ISO 228/1
• Installation position Upright to horizontal (in relation to the stem)
•     Maintenance Maintenance-free
•     Materials Fitting Low-lead red casting brass (CuSn4Zn6P6)
•     Valve cone and stem Stainless steel
•   Stem seal / stem bearing EPDM / Teflon (PTFE-GF15%)
•   Grease UNIsilikon (drinking water grade)
•     Actuator seat Plastic (PA66-GF30%)
•     Stem end Plastic (PA66-GF30%)
•     Ball seat TEFZEL
•     Diffusor TEFZEL
•     Dimensions / weights See «Dimensions and weights» on page 3
•     Motorizing See complete range of water solutions
•   2) Cavitation factor with a fully open valve