Body type: Straight through forging body
Plug type: Non-balanced single seat plug
Nominal diameter: DN8~25mm, NPS 1/4″~1″
Nominal pressure: PN1.6~32.0MPa; CLASS 150~1500LB
Applicable temperature: -196~+650℃ (Optional according to working conditions)
Type of connection: Flange, welding, thread
Flange distance: Meet IEC 60534, Non-standard customization
Gland type: Bolt compression type
Sealing gasket: Metallic graphite gasket, polytetrafluoroethylene
Packing: PTFE, flexible graphite
Actuator: Pneumatic actuator, electric actuator
The series of the ultra-small flow needle valve produced by TangoValve Group is a top guide single seated regulating valve with simple structure, good sealing performance and reliable use. The effectively and sufficient top guide system can overcome the vibration when the opening is small, and lengthen the effective service life. Smaller flow coefficient options increase the use of the valve. Multi-spring pneumatic diaphragm actuator or electric actuator can be selected.
| Z | Actuator |
| Z Series Control Valve | J: Pneumatic diaphragm actuator R: Electric 3810L actuator D: Electric PSL actuator |
| H | Structural Style |
| H Straight Stroke | W: Standard small flow control valve WG: Micro flow control valve with heat dissipation WV: Bellows type micro-flow regulating valve WD: Low temperature micro-flow control valve |
The series of the ultra-small flow needle valve is a product independently developed by our Company for small flow occasions. The valve body is small in volume and light in weight; and the internal thread structure is more convenient for installation and disassembly. The whole system has the characteristics of small volume, light weight, high performance and precise control of small flow. When adjusting the unclean medium, for the matter of small throttling gap, it’s necessary to pay attention to prevent the jamming. It is especially suitable for regulating the main flow of liquid, steam and other media.
1.Continuously adjustable in small opening range
2.With top guide structure, anti-vibration
3.The valve plug is sealed with conical surface, with good sealing effect
4.Multiple design of valve plug, good regulation performance
5.Hard alloy spray welding for valve plug and valve seat, erosion resistance, long service life
6.Small size, light weight, easy to install
7.Interchangeable installation of electric actuator
Carbon steel for body material*
| Part | Material | ||
| Body | WCB | LCB | WC9 |
| Gasket | 316 + Graphite/FTFE | ||
| Seat | 304 | 304 | 304 |
| Plug | 304 | 304 | 304 |
| Gasket | 316 + Graphite/FTFE | ||
| Guide sleeve | 304 | 304 | 304 |
| Copper bush | Cu/316L | Cu/316L | Cu/316L |
| Screw | 304 | 304 | 304 |
| Bonnet | WCB | LCB | WC9 |
| Stem | 304 | 304 | 304 |
| Packing | PTFE/Flexible graphite | ||
| Lock nut | 304 | 304 | 304 |
| Pressing sleeve | 304 | 304 | 304 |
| Plate | 304 | 304 | 304 |
Body Materialls Stainless Steel*
| Part | Material | ||
| Body | CF8 | CF8M | CF3M |
| Gasket | 316 + Graphite/FTFE | ||
| Seat | 316 | 316 | 316L |
| Plug | 316 | 316 | 316L |
| Gasket | 316 + Graphite/FTFE | ||
| Guide sleeve | 304 | 316 | 316L |
| Copper bush | Cu/316L | Cu/316L | Cu/316L |
| Screw | 304 | 316 | 316L |
| Bonnet | CF8 | CF8M | CF3M |
| Stem | 304 | 316 | 316L |
| Packing | PTFE/Flexible graphite | ||
| Lock nut | 304 | 316 | 316L |
| Pressing sleeve | 304 | 316 | 316L |
| Plate | 304 | 316 | 316L |
Note: 1.The above is of standard confguration structure; The valve seat is metal seal, and the valve seat is soft seal, grade Vl optional. lt can provide valve trim of spray welding cemented carbide. 2.The conventional materialis carbon steel and stainless steel, and the special material regulating valve products can be customized according to the user’s work conditions.
| Flow Coefficient (Cv) | Equal Percentage | 0.25 | 0.1 | 0.4 | 0.63 | 1 | ||||
| Straight Line | 0.01 | 0.04 | 0.1 | 0.16 | 0.25 | 0.1 | 0.4 | 0.63 | 1 | |
| Diameter (in) | Trip | Optional fow coefhcient Cv(★Conform to lEC ●Recommend) | ||||||||
| 8 (1/4″) | 16/25mm | ● | ● | ● | ● | ● | ● | ★ | ★ | ★ |
| 10 (3/8″) | ● | ● | ● | ● | ● | ● | ★ | ★ | ★ | |
| 15 (1/2″) | ● | ● | ● | ● | ● | ● | ★ | ★ | ★ | |
| 20 (3/4″) | ● | ● | ● | ● | ● | ● | ★ | ★ | ★ | |
| 25 (1″) | ● | ● | ● | ● | ● | ● | ★ | ★ | ★ | |
| Actuator | Pneumatic actuator:ZHA/B; Electric actuator:3810、PSL | |||||||||
| Model | Pneumatic film actuator | Electronic electric actuator |
| Form | ZH22~ZH56 | 3810L, RSL |
| Type | Multi spring | Intelligent integrated type |
| Purpose | Adjustment, switch | Regulating |
| Drive | Air pressure (spring range): 140 (20~100) KPa G 240 (40~200) KPa G 280 (80~240) KPa G | Power supply: AC 220 V ±10% 50Hz AC 380 V ±10% 50Hz |
| Joint | Rc 1/4 | Common type: 2–PF(G1/2”) Flameproof type: 2–PF(G3/4”) |
| Positive Action | Air pressure increases to push the valve to close | Control signal increases to push the valve to close |
| Reaction | Air pressure increases to push the valve open | Control signal increases to push the valve open |
| Control Signal | 4~20mA.DC (With positioner) | Input output 4~20mA.DC |
| Lag | ≤1% FS (With positioner) | ≤0.8% FS |
| Linearity | 2% FS (With positioner) | ≤±1% FS |
| Ambient Temperature | -10°C ~ +70°C | |
| Surface Coating | Black phosphating treatment Actuator: Acrylic polyurethane paint | |
| Optional Accessories | Optional accessories, Hand wheel, Magnetic valve, Travel switch, Lock up valve | Heater |
| Flow Characteristics | Equal percentage, Straight line |
| Adjustable Range | 30:01 |
| Rated Cv Value | 0.01~1.0 |
| Allowable Leakage | Leakage standard: GB/T4213 |
Ultra-small flow needle control valves are essential for precise regulation of minimal fluid flow in various industries. Their ability to finely adjust flow rates makes them indispensable in applications requiring meticulous control.
In chemical processing, these valves manage the flow of reactive or corrosive substances, ensuring accurate dosing and mixing. Their precision enhances safety and efficiency in handling hazardous chemicals.
The oil and gas industry utilizes ultra-small flow needle valves to control flow in high-pressure applications, contributing to accurate measurements and safe operations.
In the pharmaceutical sector, these valves regulate flow rates during the production of medications, ensuring consistency and quality in drug formulation.
Laboratory settings benefit from these valves for precise control of gases and liquids in experimental procedures, facilitating accurate data collection and analysis.
Additionally, ultra-small flow needle valves are employed in semiconductor manufacturing, where they control the flow of ultra-pure chemicals and gases, maintaining the integrity of production processes.
Overall, the versatility and precision of ultra-small flow needle control valves make them vital components across industries that demand exact flow regulation.
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