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SPW Parabolic Plug Bellows Sealing Type Control Valve

Based on STP structure, Sealing bellows is added in SPW. The pressure-proof and elastic stainless steel bellows is tightly seal-welded to the valve stem and upper adapter ring. For safety reasons the

Details
Based on STP structure, Sealing bellows is added in SPW. The pressure-proof and elastic stainless steel bellows is tightly seal-welded to the valve stem and upper adapter ring. For safety reasons the construction includes a standard stem sealing as back-up in case of bellows failure.
SPW series is available for process fluids when stem leakage can't be tolerated at all (e.g. toxic fluids).
■    Standard Specification
Valve Body
Type: Cast globe Valve
Nominal Size: DN 15, 20, 25, 32, 40, 50, 65, 80, 100,
150, 200, 250, 300
Nominal Pressure: ANSI 150, 300
DIN PN16, 25, 40
JIS 10K, 20K, 30K
GB   PN1.6, 2.5, 4.0 MPa
End Connection: Flange ANSI B16.5 RF, RTJ
DIN2543/2544/2545 RF
JISB2201 RF
JB/T81 RF
JB/T82.2 FM
Weld: ANSI B16.5 SW(DN≤50); BW(DN>50)
Face to Face Dimension:
ANSI150RF, JIS10K (IEC60534-3-1 37 Series)
ANSI300RF, JIS20K, JIS30K (IEC60534-3-1 38 Series)
ANSI150/300 RTJ (ASME B16.10 CLASS 150/300RTJ)
DIN PN16, 25, 40 (DIN3202-F1)
GB PN1.6, 2.5, 4.0 MPa (ISO5752 1 Series)
Please refer to table 6.1~6.4
Body Material:Please refer to table1 Please refer to figure 3 for Operated Temp. &Pressure Range
Bonnet Type:Bellows type……-46℃~350℃
 (Please pay attention to the different Temp. &Pressure Range of material)
Packing Material:PTFE V-ring compound packing、graphite compound packing、
graphite packing,
Operating Temp. &Pressure range is shownn in table 2,figure2
Seal Gasket:Spiral wound gasket(PTFE+316、Flexible Graphite+316),
Graphite with metal gasket(Graphite+316、Graphite+304)
Valve Trim
Plug Type:Parabolic column plug
Flow Characteristic:EQ%、Linearity、Quickly opening(Please refer to figure4)
Trim Material:Please refer to table 3 for STD material assembly,operated Temp. &Pressure Range
Bellows Material:0Cr18Ni12Mo2Ti(316Ti)
Actuator
Type:Multi-spring diaphragm
Air Supply:Max. 6bar
Ambient Temp.:-20℃~+80℃
Spring range:As shown in Table 5.1~5.5
Air Connection:G1/8(SA1);G1/4(SA2);G3/4(SA3)
STD Specification:As shown in Table 5.1~5.5



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Shanghai Sanzhou Automation CO.,LTD

M/T:021-59748222

QQ:652033616

E-mail:SH@szv.cn

Address:No.2651, Waiqingsong Road, Baihe Town, Qingpu District, Shanghai

Procurement:SPW Parabolic Plug Bellows Sealing Type Control Valve

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