Flange telescopic butterfly valve

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Flange telescopic butterfly valve

Model: SD341X
Nominal diameter: DN50 ~ 2000mm
Nominal pressure: PN0.6 ~ 1.6MPa
Applicable temperature: X: -40 ℃ ~ 90 ℃; XF: -20 ℃ ~ 200 ℃ (soft seal); Carbon Steel: -29 ℃ ~ 425 ℃ stainless -40 ℃ ~ 650 ℃ (hard seal)
Suitable medium: water, air, natural gas, oil and weak corrosive fluid
Drive: worm gear, electric, pneumatic, hydraulic
Body material: WCB, QT450 -10, stainless steel
shared:

Product Description:

Flange telescopic butterfly valve with automatic compensation for thermal expansion and contraction of the convenience of loading and unloading functions, used at temperatures below 120 ℃, the nominal pressure of 1.6MPa below the oil, chemical, power, papermaking, water supply and municipal construction and other industrial pipelines The best device for regulating flow and breaking fluid.


 Working principle:

 Flange retractable butterfly valve is divided into three types: 
 A, ordinary type: When used according to the design specifications of expansion joints design and installation, such as the need to add limit bolts, please indicate when designing. 
 B, fixed limit type: it can be retractable, but also limit, with the telescopic part of the fixed function of not letting its expansion. Its features are multi-functional, wider scope of application. 
 C, lengthened: it is the ordinary expansion telescopic extension of the butterfly valve lengthened to make it the length of the length required by the user (not including the amount of expansion), which is characterized by the transformation of the old pipe, the valve on the original pipeline needs to be updated Replacement, without the original pipeline on the connecting part of the pipeline cut off, you can replace it. Extended type selection should also be considered plus limit measures, such as the limit please specify when designing.
 

Features:

1, sealing parts can be adjusted replacement, reliable sealing performance.

2, unique structure, flexible design, light weight, labor-saving, quick opening and closing.

3, telescopic butterfly valve can not only compensate for the thermal expansion and contraction shrinkage caused by the pipe temperature difference, but also for the maintenance of valve installation and replacement to provide convenience.
 

Installation Precautions:

1, Flange retractable butterfly valve must be placed flat before installation, do not bump freely, the operation is prohibited to remove the bracket.

2, Flange retractable butterfly valve factory structure length of the minimum length, installation, pulled to the installation length (ie, design length).

3, when the pipe length exceeds the telescopic valve installation length, please adjust the pipe interval, do not forcibly stretch the butterfly valve, so as not to damage the butterfly valve.

4, Flange retractable butterfly valve can be installed in any, do temperature compensation with the installation of the pipeline is completed, the need to add along the axis of the stent at both ends to prevent telescopic tube telescopic tube pulled out.
 

The main technical parameters:

Nominal diameter DN (mm)

50 ~ 2000

50 ~ 1600

Nominal pressure PN (MPa)

0.6

1.0

1.6

Seal test (MPa)

0.66

1.1

1.76

Strength test (MPa)

0.9

1.5

2.4

proper temperature

Soft seal

X: -40 ° C to 90 ° C; XF: -20 ° C to 200 ° C

Hard seal

Carbon steel: -29 ℃ ~ 425 ℃ Stainless steel -40 ℃ ~ 650 ℃

Suitable media

Water, air, natural gas, oil and weak corrosive fluids

Leak rate

In line with GB / T13927-92 standards

Drive mode

Worm gear, electric, pneumatic, hydraulic


The main parts and materials:

Part Name

material

Body

WCB, QT450-10, stainless steel

Butterfly plate

WCB, QT450-10, stainless steel

Valve shaft

2Cr13 stainless steel

Sealing ring

rubber

filler

Flexible graphite


Standard:

Manufacturing Standards

JB / T8527-97, GB / T 122387-89

Flange standard

GB9113-2000, GB17241.6-1998

Inspection standards

GB / T 13927-92


The main dimensions PN1.0MPa

DN 
(mm)
Manual deviceDD1dbCLn-d04-MHH1H2L1L2L3L4L5φWT 
(kg)
L0LmaxLmin
3003D-30/25044540037028572823022528-φ23M27959542267449178254104473300148
3503D-30/250505460429306430132127112-φ23M201048583315449178254104473300188
4003D-30/250565515480327031333328312-φ28M241120620350449178254104473300237
4503D-30/250615565530327633435430416-φ28M241190667373449178254104473300268
5003D-30/400670620582347634636631616-φ28M241280702428486178254130528300289
6003D-60/800780725682368939841836816-φ31M271409759450627196245162596400480
7003D-60/8008958407944011542544539520-φ31M271613885528627244245162596400645
8003D-120 / 150010159509014412045547542520-φ34M3017361013573635244295196711300818
9003D-120 / 15001115105010014612048550545524-φ34M3018601071639635270295196711300956
10003D-120 / 15001230116011125015049551546524-φ37M33210712347239552702962958073001277
12003D-120 / 15001455138013285617554256251228-φ40M366232613438339554552962958073001764
14003D-200/40001675159015306219561263258232-φ43M39299616681078127045538741410895004280
16003D-200/40001915182017506822064066061036-φ49M45324617781218127059838741410895004953
18003D-200/120002115202019507024571073068040-φ49M45372020441426162874538760213995007416
20003D-600/120002325223021507427077579574544-φ49M45385121151486163075041760213995009372
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