Valve body
| Type |
Straight-through cast ball valve |
| Valve size |
DN25~300 |
| Rated pressure |
PN16, PN40, PN63, Pn100 |
| Connection type |
Clamp type (DN25~50), flange type (DN65~300) |
| Flange standard |
Steel flanges according to GB9113-2000, JB/T-94 |
| Sealing surface form |
PN16 is convex, PN40 is concave, and PN63 is concave |
| Flange end distance |
According to GB12221-89 |
| Materials |
ZG230-450, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti |
| Structural form |
Divided by whether the valve core is eccentric (see figure): non-eccentric V-shaped ball valve, eccentric V-shaped ball valve |
Classified by sealing ring material:
Reinforced polytetrafluoroethylene soft seal (-20 ℃~+180 ℃)
Polystyrene soft seal (-20 ℃~+300 ℃)
Metal pile Stellite alloy hard seal (-40 ℃~+450 ℃) |
| Divided by valve body structure: jacket type, jacket insulation type, jacket heat transfer interface Rp3/4 |
| Cover type |
Pressure plate type |
| Packing |
V-shaped polytetrafluoroethylene packing, flexible graphite packing |
| Gasket: Type |
tooth type and flat type; Material: F4/modified F4, stainless steel+graphite |
Valve components
Valve core: 1/4 spherical equal percentage characteristic V-shaped notch valve core
Sealing ring: spherical sealing surface
Material: Soft-sealed reinforced polytetrafluoroethylene/para polystyrene Hard sealed metal overlay with Stellite alloy
Actuator
| Type |
Pneumatic piston actuator (GTX series) |
| Valve function |
Single-acting (spring reset) air open and air closed |
| Double-acting (dual cylinder) |
| Gas supply pressure |
0.4~0.6MPa |
Valve function (valve core assembly)
Single acting (equipped with a single acting actuator)
When the gas is turned off, the actuator spring will open the valve when the gas source fails
When the gas is turned on, if the gas source fails. The actuator spring closes the valve
Double acting (with dual acting actuator)
Attachment (dosage according to requirements)
Positioner, air filter pressure-reducing valve, handwheel mechanism, limit switch, Electromagnetic valve, valve position transmitter, relay, holding valve, others
Performance
| Rated KV value |
refer to Table 1 |
| Adjustable range |
100:1 |
Valve seat leakage rate
(for rated Kv value%) |
|
| Metal seal |
Less than 0.01% or 0.001% (ANSI B16.104-1976 Grade IV) |
| Soft seal |
Less than 0.00001% (ANSI B16.104-1976V grade) |
| Return difference |
Less than 1% of the full stroke (with locator)
Less than 3%~5% of the full journey (without locator) |
| Basic error |
Less than ± 1% of the full stroke (with locator)
Less than ± 5% of the full stroke (without locator F) |
| Action time |
Refer to Table 1 |
| Dimensions |
Refer to Table 2 |
| Product weight |
Refer to Table 2 |
| Paint color |
The pneumatic actuator of the regulating valve and the surface of the valve should be painted,
while stainless steel and copper valves may not be painted.
The arrows and text on the valve body are painted red. Users can also specify colors. |
