Body form: Straight-through cast body
Plug type: Non-balanced single seat plug
Nominal diameter: DN15~300 mm, NPS 1/2″~12″
Nominal pressure: PN1.6~4.0MPa; CLASS 150~1500LB
Applicable temperature: -20℃~+350℃
Type of connection: Flange
Flange distance: Meet IEC 60534
Leakage level: As per ASME B16.104
Set value deviation: ±8%
Actuator: Pneumatic actuator (film type, piston type)
V230Y self-operated pressure (differential pressure) control valve, composed of body, valve seat, valve core components and other parts andexecutive unit, is an energy-saving product that can automatically adjust the pressure without external energy and only rely on the pressure change of the regulated medium itself. lt can be used as apressure control device for non-corrosive(maximum temperature 350C)liquid, gas, steam and other media.
Without requirement of any external energy, serial self-actuated control valve produced by the company controls value spool positionby using self-energy of the adjusted medium as power producer and leading it into actuator, and stabilizes upstream(downstream) pressure by changing differential pressures and fluxes of both ends. With advantages such as agile action, perfect airtightness and low wave force of pressure set point, this control valve widely applies to automatic control of pressure stabilization or pressure relief and stabilization of gases, liquids and mediums.
| ZZY | Structural Style |
| Z series control valve | P: Single-seat self-operatedcontrol valve M: Sleeve self-operatedcontrol valve |
| Nominal Diameter DN (mm) / NPS (in) | 15 (1/2″) | 20 (3/4″) | 25 (1″) | 32 (1-1/4″) | 40 (1-1/2″) | 50 (2″) | 65 (2-1/2″) | 80 (3″) | 100 (4″) | 125 (5″) | 150 (6″) | 200 (8″) | 250 (10″) |
| Flow Coefficient Kv | 7 | 11 | 20 | 30 | 48 | 75 | 120 | 190 | 300 | 480 | 760 | 1100 | 1750 |
| Rated Travel L (mm) | 8 | 10 | 14 | 20 | 25 | 40 | 50 | 60 | 70 | ||||
| Pressure (MPa) | 1.6, 4.0 | ||||||||||||
| Pressure Range (KPa) | 15~50, 40~80, 60~100, 80~140, 120~180, 160~220, 200~260, 240~300, 280~350, 330~400, 380~450, 430~500, 480~560, 540~620, 600~700, 680~800, 780~900, 880~1000, 600~1500, 1000~2500 | ||||||||||||
| Flow Characteristics | Quick open | ||||||||||||
| Adjustment Precision (%) | ±5 | ||||||||||||
| Use Temperature (℃) | ≤350 | ||||||||||||
| Allowable Leakage: Hard Seal | Single seat: ≤10⁻⁴ Rated valve capacity (IV), Sleeve: ≤5×10⁻³ Rated valve capacity (II) | ||||||||||||
| Allowable Leakage: Soft Seal | 0.15 | 0.3 | 0.45 | 0.6 | 0.9 | 1.7 | 4 | 6.75 | 11.1 | 16 | |||
| Component | Material |
| Body | ZG230~450, ZG1Cr18Ni9Ti, ZGCr18Ni12Mo2Ti |
| Plug | 1Cr18Ni9Ti, Cr18Ni12Mo2Ti |
| Seat | 1Cr18Ni9Ti, Cr18Ni12Mo2Ti |
| Stem | 1Cr18Ni9Ti, Cr18Ni12Mo2Ti |
| Actuator Material | A3, 1Cr18Ni9Ti |
| Packing | PTFE, Flexible graphite |
| Diaphragm | Nitrile rubber, oil resistant rubber, fluorine rubber |
Note: The conventional material is carbon steel and stainless steel, and the special material control valve products can be customized according to the user’s work conditions.
Self-Actuated Pressure Control Valve is widely used in various industries where precise and efficient pressure regulation is required without external energy. They are ideal for applications such as:
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