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Wafer Type High Performance Butterfly Valve Seal Ring Blue Color 2 - 60 Inch

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Wafer Type High Performance Butterfly Valve Seal Ring Blue Color 2 - 60 Inch

Country/Region china
City & Province wenzhou zhejiang
Categories Home Decor

Product Details

Cast Steel Wafer Type Metal Seated Butterfly Valve Api609 High Performance BFV D73H

 

Description

The wafer style butterfly valve is designed to maintain a seal against bi-directional pressure differential to prevent any backflow in systems designed for unidirectional flow. It accomplishes this with a tightly fitting seal; i.e., gasket, o-ring, precision machined, and a flat valve face on the upstream and downstream sides of the valve.

 

Quick Details

1. Valve Type: Wafer Type Butterfly Valve Metal Seated

2. Standard: API609

3. Pressure rating: Class 150LB -300LB - 600LB

4. Size: 2” - 60"

5. Body materials: Carbon steel, Stainless steel

6. Disc: Carbon Steel (WCB), Stainless Steel (CF8 / CF8M)

7. Stem material: Stainless Steel 13Cr, F304 / F316, 17 -4PH

8. Actuator: Lever, Worm gear, Pneumatic actuator etc

 

Features

1. The Seal Principle of Hard Seal Butterfly Valve Triple Offset

The Triple Offset Butterfly Valve provides a bi-directional bubble tight shut-off.This geometry ensures that the disc seal contacts the body seat only at the final shut-off position without rubbing or galling, providing a torque generated resilient seal with sufficient “wedging” to ensure auniform seal contact.

 

Triple Offset Butterfly Valve Geometry

2. The Triple Offset Geometry
OFFSET 1 The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat

OFFSET2 The shaft centerline is offset from the pipe and valve which provides interference free opening and closing of the valve

0FFSET3 The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.

 

3. Friction Free Sealing for Long Cycle Life
(1) Seat is Cr13 Metal alloy or hardfaced with Stellite as standard.

(2) The gasket is spiral wound SS/Graphite for zero leakage.

(3) Seat ring forces are generated by the torque during closing uniformly around the entire circumference. The resilient seal fleses and energizes, assuming the shape of the seat. The compression forces equally distributed around the perimeter provide a tight bi-directional shut off.
The resiliency of the seal allows the valve body and disc to contract or expand, without the risk of jamming due to temperature fluctuations. It is self-adjusting.

 

Standards

Design and Manufacture; API 609. MSS SP-67, MSS SP-68
Inspection and Test: API S98

End flange dimension: ASME B16 5 (NPS≤24). ASME B16 47 B series
BW end dimension: ASME B16.25

Face to face and end to end; API 609

Pressure-temperature ratings: ASMF B16.34

 

Application

Hard Seal (Metal Seated)Butterfly Valve triple offset series are used in such fields as metallurgy, light industry, electric power, petrochemistry, coal gas channel etc.

 

Description

 

Triple Offset Butterfly Valve Drawing

 

1. Materials List (Triple Offset Butterfly Valve)

 

No.Part NameMaterials
1BodyASTM A216 WCBASTM A351 CF8ASTM A351 CF3ASTM A351 CF8MASTM A351 CF3M
2PinASTMA29 1035 / A276 304ASTM A276 304ASTM A276 304LASTM A276 316ASTM A276 316L
3Stem420 / 304 / 316304304L316316L
4DiscWCB / CF8 / CF8MA351 CF8A351 CF3A351 CF8MA351 CF3M
5Seal Ring304/316+Graphife / PTFE304+Grapnite / PTFE304L+Graphite / PTFE316+Graphite / PTFE316L +Graphite / PTFE
6Retainer FlangeA105 / A182 F304 / F316F304A182 F304LA182 F316A182 F316L
7BoltB7 / B 8/ B8MB8B8B8MB8M
8BoltB7B8B8B8MB8M
9CoverA105A182 F304A182 F304LA182 F316A182 F316L
10GasketGraphiteGraphiteGraphiteGraphiteGraphite
11BushingLuberized bronze304 Nitriding304L Nitriding316 Nitriding316L Nitriding
12Bushing304 Nitriding
13Packing SeatA105/304304304L316316L
14PackingGraphite
16Packing CoverWCBCF8CF3CF8MCF3M
17NutA194 2HA194 8A194 8A194 8MA194 8M
18BoltA193 B7A193 B8A193 B8A193 B8MA193 B8M
19YokeWCBWCB Galvanization, CF8
Drive ActuatorHandle, Electric actuator, Worm gear, Pheumatic actuaror

 

2. Main Connection Dimensions

ClassSize ClassSize 
NPSDNLNPSDNL
150Lb25043300Lb25043
21/2654621/26546
3804838048
410054410054
512556615059
615057820073
8200641025083
10250711230092
123008114350117
143509216400133
1640010218450149
1845011420500159
2050012724600181
24600154600Lb25043
2665015421/26546
2870016538054
30750165410064
32800190615078
36900200/2038200102
38950200/20310250117
40100021612300140
421050216/25114350155
441100216/25116400178
481200254/27618450200
52130025420500216
56140027924600232
601500279    

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