Wafer Type Lever Operated Butterfly Valve (Multi-Flange Drilled)
Wafer Type Lever Operated Butterfly Valve (Multi-Flange Drilled) - Image 2
Wafer Type Lever Operated Butterfly Valve (Multi-Flange Drilled) - Image 3
Wafer Type Lever Operated Butterfly Valve (Multi-Flange Drilled) - Image 4

Wafer Type Lever Operated Butterfly Valve (Multi-Flange Drilled)

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Description

Wafer Type Lever Operated Butterfly Valve (Multi-Flange Drilled) – Technical Datasheet

1. Product Overview

This product is a wafer-type soft-sealed butterfly valve operated by a lever handle, featuring a concentric design and a multi-flange drilled (petal-shaped) body. The multi-standard drilling allows for universal installation across various pipe flanges (ANSI, DIN, JIS) without modification. The body is made of ductile iron (QT450) with a blue epoxy resin electrostatic coating, and the disc is ductile iron (DI). It is widely used for shut-off and regulating purposes in water treatment, HVAC, and industrial pipelines. The images illustrate sizes DN50, DN65, DN80, and DN100.

2. Technical Specifications

 
 
 
 
Parameter Specification
Product Name Wafer Type Lever Operated Butterfly Valve
Nominal Diameter (DN) DN50 – DN100 (Examples shown: DN50, DN65, DN80, DN100)
Nominal Pressure (PN) PN10 / PN16 (Marked 5K / 10K, JIS standard)
Connection Type Wafer Type (Multi-Flange Drilled / Universal Drilling)
Flange Compatibility Universal drilling to suit ANSI Class 150, DIN PN10/PN16, JIS 5K/10K
Operation Mode Manual (Lever / Handle Operated)
Applicable Temperature -20°C ~ 120°C (Depends on seat material)
Applicable Medium Water, sewage, sea water, air, HVAC, oil, weak acids & alkalis
Leakage Class Zero Leakage (Complies with GB/T 13927 / ISO 5208 Grade A)
 
 

3. Material of Main Parts

 
 
 
 
Part Name Material Specification (As shown in images)
Body Ductile Iron (QT450), Blue Epoxy Resin Coated
Disc Ductile Iron (DI) Nickel Plated [Marked “DI” as shown]
Seat EPDM / NBR [Black rubber shown in images]
Stem Stainless Steel (SS416 / SS304)
Lever Handle Aluminum Alloy (Black Coated), with gear locking mechanism
O-Ring NBR / EPDM
 
 

4. Applicable Standards

 
 
 
 
Standard Type Reference Standard
Design & Manufacture API 609 / EN 593 / JIS B2032 / GB/T 12238
Flange Connection Multi-standard drilling (ANSI B16.5 / DIN 2501 / JIS B2212 / GB/T 17241.6)
Face to Face API 609 / EN 558-1 / ISO 5752 / GB/T 12221
Pressure Test API 598 / EN 12266 / GB/T 13927
 
 

5. Key Features

  1. Multi-Flange Drilled Body (Universal Compatibility): The petal-shaped, multi-hole flange design allows the valve to be directly mounted between various international flange standards (ANSI, DIN, JIS) without the need for adapters, greatly reducing inventory and installation costs.

  2. Smooth & Labor-Saving Operation: Equipped with a black aluminum alloy lever handle featuring a gear locking mechanism, allowing for multi-angle adjustment of the disc opening with low operating torque.

  3. Reliable Bi-directional Sealing: The concentric soft-seat structure ensures a tight fit between the rubber seat and the disc, achieving zero leakage in both directions.

  4. Superior Anti-Corrosion: The QT450 ductile iron body is coated with blue epoxy resin, and the DI disc is nickel-plated for excellent rust and corrosion resistance.

  5. Clear Markings: The body and disc are cast with clear markings (DI, DN, 5K/10K) for easy identification and selection.

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