J665Y Y Type Pneumatic Globe Valve manufacturer, factory and supplier. J665Y Y Type Pneumatic Globe Valve is especially suitable for the thermal power station system (the main steam system drainage in the thermal power station system), as a connecting or cutting medium. The upper part of the pneumatic J665Y Y Type Pneumatic Globe Valve consists of a valve cover and a packing box, which facilitates quick disassembly and in-place maintenance. The construction of the inclined stem and the optimal flow path shape design allow the medium to be nearly straight, and the valve has the best Cv value, producing a lower pressure drop than other types of valves.
J665Y Y Type Pneumatic Globe Valve body is surfacing with a special process of cemented carbide sealing surface (sealing surface through integral hardening treatment), which makes the structure more compact. The conical sealing surface design allows small axial forces to be sealed, providing reliable sealing and long service life. J665Y Y Type Pneumatic Globe Valve disc guided by the valve body cavity has two guiding rings above and below, and the top and bottom of the valve disc are guided at the same time, forming a piston valve disc guided in the valve body cavity throughout the whole process, which can eliminate the phenomenon of jammed, surface scratches, stem bending and flap vibration caused by various improper forces. The guide ring at the bottom of the disc moves 90% of the fluid through in a near straight line, effectively eliminating all adverse reactions caused by side impact. These characteristics make the valve suitable for rapid steam "drain" and "drain" systems in power stations. Disc sealing surface surfacing carbide, the alloy has excellent mechanical properties, wear resistance, erosion resistance, can maintain a long service life of the valve. J665Y Y Type Pneumatic Globe Valve stem packing with imported special packing, can play the best leak-proof effect, and durable, easy to disassemble and assemble. The sealing between the filler box and the valve body is made of 316 high-mesh flexible graphite pad, which is assembled with predetermined torque, safe and reliable, and prevents leakage.
J665Y Y Type Pneumatic Globe Valve Performance parameters
Nominal diameter :DN20 DN25 DN32 DN40 DN50 DN65 DN80 DN100
Flow coefficient (CV):5 8 12 17 29 43 70 100
Rated travel :16 25 40
Effective diaphragm area :280 400 600
Nominal pressure :150LB(2.0MPa) --1500LB(25.0MPa)
Operating temperature :≤570℃
Signal range :20-100, 40-200
Origin pressure (MPa) :0.14-0.04
Allowable leakage: less than VI level
J665Y Y Type Pneumatic Globe Valve Feature:
1.This series of valves is used for the boilers' periodic and continuous sewerage system in thermal power plants; the power station's water delivery system and water discharge system.
2.The main seal uses the same material to ensure the same coefficient of thermal expansion, to ensure the seal and prevent bite; the main seals are hardened, high hardness, wear resistance, erosion resistance, long service life.
3. The back pressure of the throttling device achieves the purpose of pressure regulation by adjusting the number of throttling cylinders and the orifice of the throttling orifice in the throttling cylinder.
4. The high temperature resistant spring provides continuous sealing thrust between the valve disc and the valve seat and is maintained sealed by the line pressure.
5. Pneumatic + manual drive, safe and reliable, once the automatic control fails, the valve can be actuated by manual drive.
J665Y Y Type Pneumatic Globe Valve Part material
| No |
Part Name |
Material |
| 1 |
Body |
WCB,WC6,WC9,20CrMoV,15Cr1MolV, F11, F22, P91 |
| 2 |
Seat |
A105,12Cr1MoV |
| 3 |
Wedge |
WCB,WC6,WC9,20CrMoV,15CrlMolV |
| 4 |
Stem |
2Crl3,25Cr2MolV |
| 5 |
Bonnet |
A105,WCB,WC6,20CrMoV,12Cr1Mo1V |
| 6 |
Sealing Ring |
Graphite , Soft steel |
| 7 |
Separate Ring |
1Cr13,12Cr1MoV |
| 8 |
Bolt |
35,35CrMoA |
| 9 |
Nut |
45,35CrMoA |
| 10 |
Packing |
Graphite |
| 11 |
Yoke |
WCB,WC6,20CrMoV |
| 12 |
Actuator |
Assembly |
