Pneumatic cage type regulating valve

HCB Cage style double seatPneumatic cage type regulating valveIt is a pressure balanced regulating valve, and the fluid channel of the valve body is SStreamlined and equipped with a guiding wing to improve the smooth flow of fluid around the sleeve, the advantages are low pressure drop loss, large flow rate, wide adjustable range, high accuracy of flow characteristic curve, good dynamic stability, low noise, and minimal cavitation corrosion. The regulating valve is equipped with a multi spring thin film actuator, which has a compact structure and high output force. Suitable for controlling high temperature and low temperature high-pressure fluids.

Pneumatic cage type regulating valveMain technical parameters and performance

Valve bodyType: Straight through double seat cast spherical valve
Nominal Diameter 40～200mm
Nominal Pressure ANSI 125、150、300The600
JIS 10、16、20、30The40K PN 1.6、4.0The6.4MPa
Connection type: flange type:FFTheRFTheRJTheLG
According to the standard ANSI B16.5，JIS B2201JB/T79.1 PN1.6MPa JB/T79.2
concave-convex surface Welding type: embedded welding SW（40～50mm）
butt weld BW（65～200mm）
material HT200 ZG25
ZG1Cr18Ni9 ZG0Cr17Ni12Mo2 1.25Cr0.5Mo 5.0Cr0.5Mo SCPH21 SCPH61 Ti
Upper valve cover room temperature type（P）：-17～+230℃
Extension Type I（E1）：-45～-17℃ +230～+566℃
Elongation type II（E2）: Integrated type（E2I）：-100～-45℃
Welding type（E2W）：-196～-100℃
Cap type bolt compression type
Packing material VType PTFE packing, impregnated PTFE asbestos packing, asbestos braided packing
Valve components
Valve core type: pressure balanced valve core
High precision flow characteristics, refer to the diagram 1
High capacity sleeve flow characteristics, refer to the diagram 2
Reference diagram for working temperature and pressure difference of soft valve seat within the scope of work 3;
Reference diagram for working temperature and pressure difference of Steyr welding 4
Note: The integral and separated sleeves should be determined based on the nominal diameter, material, and operating temperature.
material 17-4PHThe0Cr17Ni12Mo2Sitailai welding
actuator
type HAMulti spring thin film actuator
Diaphragm material: Ethylene propylene rubber with nylon clip

spring range 0.02～0.10，0.08～0.24MPa
gas supply pressure 0.14，0.16，0.28，0.40MPa
Air source connector Rc 1/4
ambient temperature -30～+70℃
Note: This valve can also be used with VA5or VA6Execution agency.
Valve action type: gas open or gas closed
enclosure Positioner, handwheel mechanism, pneumatic valve position transmitter
performance

Leakage rate metal valve seat: compliant with standards ANSI B 16.104Level II, less than rated Cvof 0.5%
PTFE valve seat: compliant with standards ANSI B 16.104Grade VI, less than rated Cvof 10-7
Return difference 3%(without locator)
1%(with locator)
Linear ±5%(without locator)
±1%(with locator)
Note: Adopting standard VType PTFE packing
adjustable range 50∶1