SDP Top and Bottom Double Guiding Parabolic Plug Type0 pages
SDP Top and Bottom Double Guiding Parabolic Plug Type
Metal-seated quick-changeable trim combination with top and bottom guiding. This double
guiding construction stabilizes stem and plug over the full travel range. The bottom guiding is
located right below the seat ring and can be easily replaced. Most conventional body designs with
top and bottom guided trim have a bolted bottom flange which requires an extra body gasket plus
the risk of additional external leakage.
SDP is recommended for large pressure drop, high flow rate and instability fluids applications.
¡ Standard Specification
Valve Body
Type: Cast globe Valve
Nominal Size: DN 40, 50, 65, 80, 100, 150, 200, 250,
300, 350, 400
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 SWiDN50j; BWiDN„50j
Face to Face Dimension:
ANSI150RF, JIS10K iIEC60534-3-1 37 Seriesj
ANSI300RF, JIS20K, JIS30K iIEC60534-3-1 38 Seriesj
ANSI150/300 RTJ iASME B16.10 CLASS 150/300RTJj
DIN PN16, 25, 40 iDIN3202-F1j
GB PN1.6, 2.5, 4.0 MPa iISO5752 1 Seriesj
Please refer to table 6.1~6.4
Body MaterialFPlease refer to table1 Please refer to figure 3 for Operated Temp. &Pressure Range
Bonnet TypeFSTD type……-46Ž`200Ž; 200Ž`300Ž
Radiation fin type……300Ž`530Ž
(Please pay attention to the different Temp. &Pressure Range of material)
Packing MaterialFPTFE V-ring compound packingAgraphite compound packingA
graphite packing,
Operating Temp. &Pressure range is shown in table 2Cfigure2
Seal GasketFSpiral wound gasketiPTFE+316AFlexible Graphite+316j,
Graphite with metal gasketiGraphite+316AGraphite+304j