cage seat regulating valve

cage seat regulating valve is a valve with a pressure balance type, body fluid channel was streamlined S, is also provided with a sleeve surrounding fluid to improve the smooth flow of the guide wing, has the advantages of small pressure drop loss, large flow, wide adjustable range, the flow characteristic curve of high precision, good dynamic stability, low noise little corrosion, cavitation. Valve equipped with multi spring diaphragm actuator, compact structure, large output force. Proper control of high temperature, high pressure difference of fluid temperature.

The main technical parameters and performance
The valve type through two seater casting ball valve
Nominal diameter 40 ~ 200mm
Nominal pressure ANSI 125, 150, 300, 600
JIS 10, 16, 20, 30, 1.6, 4, 6.4MPa 40K PN
Connection type flange type: FF, RF, RJ, LG
According to standard of ANSI B16.5, JIS B2201JB/T79.1 PN1.6MPa JB/T79.2
Concave convex surface welding weld type: SW (40 ~ 50mm)
Butt welding of BW (65 ~ 200mm)
Material HT200 ZG25
ZG1Cr18Ni9 ZG0Cr17Ni12Mo2 1.25Cr0.5Mo 5.0Cr0.5Mo SCPH21 SCPH61 Ti
The valve cover at room temperature (P): -17 ~ +230 ℃
Elongation type Ⅰ (E1): -45 ~ -17 ℃ +230 ℃ to +566 ℃
Elongation type II (E2): integral (E2I): -100 ~ -45 ℃
Welding type (E2W): -196 ~ -100 ℃
The gland type bolt clamp
Filler V PTFE, PTFE impregnated asbestos packing, asbestos braid packing

Valve components
Spool type pressure balance valve
Flow characteristics of flow characteristics of high precision, refer to figure 1
Flow characteristics of high capacity sleeve, refer to figure 2
Scope of work soft seat operating temperature and pressure difference with reference to figure 3;
Division Chatterley surfacing work temperature and pressure difference with reference to figure 4
Note: the overall type and separation type sleeve should be based on the nominal diameter, material, working temperature and.
Material 17-4PH, 0Cr17Ni12Mo2 division Chatterley surfacing
Actuator
Type HA multi spring diaphragm actuator
Ethylene propylene rubber clip nylon membrane material

Spring range 0.02 ~ 0.10, 0.08 ~ 0.24MPa
Gas pressure of 0.14, 0.16, 0.28, 0.40MPa
An air supply joint Rc 1/4
Ambient temperature is -30 ~ +70 ℃
Note: the valve also can be equipped with VA5 or VA6 actuators.
Valve type gas -- gas -- open or closed
Accessory positioner, hand wheel, pneumatic valve position transmitter
Performance
The leakage amount of metal seat: meet the standard ANSI B 16.104 class II, 0.5% less than the rated Cv
PTFE seat: meet the standard ANSI B 16.104 grade VI, less than the rated Cv 10-7
Back to the difference of 3% (not with a locator)
1% (with a locator)
Line of ± 5% (not with a locator)
+ 1% (band locator)
Note: V PTFE using standard
The adjustable range of 50: 1