DI Construction Flanged Ball Check Valve Axial Disc Applications Pumping stations

Applications:Pumping stations. Water treatment and supply. Networks for clean water distribution, irrigation (filtered water). Fire protection networks.

Technical data

• Design: EN14341 (EN12516).
• Range: Flanged ends from DN 50 to DN 500 (others inquire).
• Connections: Flanged PN6 to PN25 acc.to EN1092-1 / ISO7005-1 / BS 4504 sect 3.2 ANSI 125#/150# acc to ASME B16.1 / B16.5
• Operating temperatures -20ºC +120ºC (for other temperatures inquire).
• Testing: EN12266 (ISO5208).
• Minimum backpressure for tightness: 0,2 bars.
• Face to Face not according to standards.

Technical performances

• Versatile instalation.
• Springs loaded disc for better sealing.
• Reduces Water hammer.
• Silent.
• Excellent relation price quality.
• Available with strainer to use as footvalve.
• Available with threaded bosses for assembly manometers, controlled evacuation or by-pass.

Test

• Seat: 1,1 x nominal pressure.
• Body: 1,5 x nominal pressure.

Materials

• Alloy steel.
• Also available in stainless steel and superduplex. Sizes to be inquired.

Silent Lift Check Valve

Brief introduction:

The silent resilient check valve is applied to the vertical pipelines in which medium flow runs upwards

and the

back-wards flowing are effectively stopped. It could be widely used in water-supply system and drain system and it works silence.

Features:

⊙Professional design

The inner cavity of valve is designed as streamline shape, which can effectively stop the turbulence.

The

spherical surface is introduced to form the front of disc and cone contact for the seating couple; these

structures will extremely the shock force of medium and decrease the resistance coefficient of flow.

Thin shell

structures is employed when design the diversion component to ensure the laminar flow and greatly

drop the

weight. The reasonable open height and cavity space enable the obtaining of maximum area of flow

section. It

can avoid occurring of the air chamber; the valve parameter Cv is improved.

⊙Excellent proof corrosion characteristics

Internal and external epoxy resin coating.

⊙Reliable hygiene principles

Epoxy resin and rubber comply with hygiene standard, the trim, such as disc, spring, etc., are made

of stainless

steel.

Mail part & material

Body, Line: GGG50 with internal and external epoxy resin coating

Disc: GGG50 or casting steel

Guiding stem, Spring: 1Cr17Ni12Mo2Ti, Stainless steel

Guiding bushing: Bronze CuAI10Fe3

Flange washer, O-ring: NBR, EPDM or FPM

Technical Specification

-Nominal diameter:50～350mm

-Nominal pressure:1.0/1.6Mpa
-Strength testing pressure:1.5/2.4Mpa

-Sealing testing pressure:1.1/1.76Mpa

Executive standard