General information

Non flanged Concentric Butterfly Valves type WAFER have been designed, generally, for industrial applications where dimensional problems are important.

Field of use

Different materials and coatings used for butterfly valves and liners can have a large response to many situations in the industrial area of drinking water and other fluids as the raw water, sea water, etc.

It provides an effective and reliable solution in conditions of work as may be pumping stations, water treatment, desalination, irrigation, etc.

Range

Concentric Butterfly Valves type WAFER are produced from DN25 up to DN1200.

- Bodies: WAFER type in ductile iron EN-GJS-400-15 + epoxy powder 150 microns blue RAL 5005

- Maximum operating pressure:

• DN25 – DN1200: up to 16 bar
• DN40-300: up to 25 bar (please contact us for other DN)

- Flange dimensions: PN10 and PN16 (please contact us for PN25)

- Discs:

• Ductile iron EN GJS-400-15 + Epoxy coating in black 150 microns, with ACS certificate
• CF8M Stainless Steel
• Contact us for other materials

- Sealing materials in the body type EPDM with ACS certificate (DVGW also available)

- Operation:

• Hand lever type MN : DN40-150mm
• Hand lever type MR : DN200-350mm
• Gear-box + handwheel : DN40-1200mm
• Motorized: - Electrical motor: Auma, Bernard, … - Pneumatic actuators, …

Given our wide range of materials, coatings and available drives, we remain at your disposal to look for a solution adapted to your requirements.

Reference

Codification

• Position 6 (disc) : A = St Steel CF8M, B = Ductil Iron + black epoxy
• Position 7 (actuator) : L = hand lever MN, B = gearbox with handwheel, M = motorized
• Position 10 (Elastomer) : E=EPDM ACS, W=EPDM DVGW, V=EPDM vulcanized, T=EPDM HT, N=Nitrile, F=Viton

C = dimension between flanges

Concentric Butterfly Valves type WAFER Stainless steel disc CF8M

Dimensions and mass

No flanged joint must be installed on this valve. The concentric valves should not be assembled with large tolerance flange adapters (type Ultraquick).

Added values

Compliance with Standards

Company: designer and manufacturer works according to ISO 9001 by AENOR n° ES 0780 / 1997

Product: complies to the standards NF EN1074-1 and by DVGW (up to DN700). Rest of the range in process.

Dimensions:

NF EN 593: Metallic butterfly valves

NF EN 558-1: Face to Face dimensions series 20

EN ISO 5752: Metal valves for flanged pipe network. Table 5 short series

API 609: Butterfly valves Flanged, Lugged and Wafer

NF EN 1092-2: Flange connections to the piping material

Materials: NF EN1503: Valves. Materials for bodies, bonnets and covers

Operation:

EN ISO 5210 : Multi-turn actuator to valve

EN ISO 5211 : Part-turn actuator to valve

Assembling between flanges:

ISO PN10 or PN16, DIN 2632 PN10 or PN16, EN-1092 PN10 or PN16, NFE 29222 PN10 or PN16

Identification : EN ISO 5209 : Marking

Hydraulic Tests: EN 12 266-1: (Ratio A-No leakage)

Drinking water approvals:

ACS for all the butterfly valves from DN40 up to DN1000 mm according to the order 29 May 1997 amended and circular French Ministry of Health DGS/SD7 A 2002 n° 571 dated 25 November 2002.

In accordance with the German rules DVGW n° 6201CM0237.

Traceability

Traceability system for LUG butterfly valves allows since the departure from the factory to the last day of life of the valve to obtain information relating to the product origin and quality both of coatings and materials, manufacturing, inspection and hydraulic tests results.

From the moment the order is in the computer system, starts the program of manufacturing. A serial number is automatically assigned to this valve. Manufacturing sheet will be marked with this number. This sheet will contain all information about manufacture and inspection of the valve. At the end, two stickers with the number of identification will be placed in the body and in the top flange of the valve.

Assembling

The trial sheet assembly is identified with the internal number. This sheet has as many labels as valves to assemble. This label identifies the person responsible for the mounting and the possible problems during the assembling. The document contains the components of the valve if certification 3.1 is required by the customer.

Hydraulic tests

Label identifying the inspector and the results of the tests. Any remark produced during the tests and the torque is shown.

Foundry marking

Body and disc: manufacturer and type of material.

Marking (identification/labels)

Hydraulic characteristics

Headloss Δp: Butterfly valves in conditions for liquids, density = 1 and temperature 20ºC for the water:

Kv = Q ∆P

with Q in m³/h and Kv in m³/h, Δp in bar

Flow coefficient KV in m3 /h depending on angle of opening disc:

Mechanical characteristics

Operation torque

Necessary torque in Nm to close the disc at ΔP. These torques have been obtained with water at 20 ° C, and EPDM seats.

Material and coating

DN40-200

DN250-500

DN600-1100

DN1200

Upper flange

Operation by hand lever type MN and MR

The operation by hand lever allows the disc between 0 and 90°. There are two types of manual control lever, the MN type and type MR.

MN type is the referenced for our range of Wafer and Lug valves. The lever allows seven positions of the butterfly between 0° to 90° with anchorage by spring.

Operation by gearbox MDV and Handwheel

Operation by electric motor type AUMA

PFA 10 bar

PFA 16 bar

Assembling main dimensions

Screwing - Main dimensions

Packing