Flange or Wafer Ends Butterfly Valve D41 manufacturer from China ZHONGGONG VALVE GROUP CO.,LTD

Payment Terms:	T/T
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: D41

Production Capacity: 2000

Delivery Date: 30 DAYS

Standard or Nonstandard: Standard

Structure: Butterfly

CLASS150-600LB: 1/2"-48"

Means of Transport: Ocean,Air

Packing: PLYWOOD CASE

Power: Manual

Pressure: Others

Material: Casting

Material can be
Body: SS316/304/Ductile iron/Al-bronze
Disc: SS316/304/Aluminum-bronze/Ductile iron, nickle plated etc.
Stem: SS416/420 etc.
Seat:

Detail

The triple eccentric butterfly valve provides matched performance, reliability and quality for the harsh conditions of critical process applications, steam isolation, high cycle frequency, and temperature extremes,

The superior design of the disc/shaft engagement and the precision machined sealing components combine with innovative design geometry to provide improved cycle life, lower operating torque, and reliable performance in extreme temperatures.

Feature

-Triple Eccentric Design

Eliminates wear associated with sealing surface contact and maintains sealing integrity and high cycle life.

-Wide Angle Seat Design

Eliminates wedging and binding of the seat/disc engagement.

-Bubble-Tight Closure

Ensures process efficiency with reduced cost of maintenance.

-Self-Centering Disc Design

Accommodates thermal cycling and temperature without binding.

-Robust Single-Piece Shaft

Minimizes shaft deflection which promotes bi-directional sealing.

-No Plastics or Elastomers

Standard design provides fire safety.

-Bearing Protector Rings

Prevent solid particles from coming in contact with bearing surfaces.

-Blow out-Proof Shaft

Complies with API 609 to improve safety for operating personnel.

-Low Break and Operations Torque

Enables simplified, cost-effective automation

Triple Eccentric Design

As the name implies, there are three separate offsets designed into the triple offset butterfly valve. Two of the offsets apply to the location of the shaft in respect to the centerline of the bore and the centerline of the disc/seat sealing surfaces:

Offset 1: The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat.

Offset 2: The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve.

Offset 3: The third offset in the design is the axis of the seat cone angle that is inclined from the centerline of the valve bore to minimize rubbing of the seat/seal contact surfaces during operation and to preserve sealing integrity over the cycle life of the valve. This wide angle seat also eliminates wedging or binding of the disc.

Material

Part Name Material

Body Cast Iron, Ductile Iron, Carbon Steel, Cast steel, Stainless Steel

Disc Cast Iron, Ductile Iron, Carbon Steel, Cast steel, Stainless Steel

Shaft Stainless Steel, Carbon Steel Coated With Electroplate

Seat Stainless Steel, Natural Rubber, Nitrile Rubber, Neoprene, EPDM, Silicone Rubber, PTFE, Bronze

O-Ring Stainless Steel, Neoprene, Nitrile Rubber

Standard

Design: ASME B16.34/API 609

Face to Face: ASME B16.10

Dimensions: ISO 5752/API 609

Flange Dimensions: ASME B16.5/ASME B16.47/ISO 7005