Electric single-seated control valve
The single-seat electric control valve is a top-guided regulating valve with a spherical valve body. It features a compact structure, high regulation accuracy, low pressure drop loss, precise flow characteristics, large guiding area, and anti-vibration performance.
Features
- It boasts a field operation life of over 100,000 trouble-free cycles, ensuring reliable and worry-free system operation.
- It features a wide adjustable range with an inherent turndown ratio of 50, and offers linear and equal-percentage flow characteristics.
- It has the advantages of compact structure, light weight, sensitive operation, large valve capacity, precise flow characteristics and easy assembly and disassembly.
- The single-seat electric control valve can be directly controlled by current signals to adjust the opening, without the need for a servo amplifier.
- It is suitable for operating conditions with small allowable pressure difference and low allowable leakage.
Basic Parameters
Nominal Diameter (DN):
DN20～DN200
Operating Voltage:
AC220V, AC280V, DC24V
Medium Temperature:
≤350℃
Ambient Temperature:
-30℃～60℃
Nominal Pressure:
1.6～6.4MPa
Action Time:
15～25 seconds
Control Method:
Regulating Control
Sealing Form:
Hard Seal, Soft Seal
Physical Specifications
Material & Connection
Connection Method:
Flange Connection, Threaded Connection, Welding
Valve Body Material:
Carbon Steel Casting (WCB), Stainless Steel (SUS304, SUS316)
Valve Seat Material:
Stainless Steel (SUS304, SUS316, SUS316L)
Valve Stem Material:
Stainless Steel (SUS304, SUS316, SUS316L)
Packing Material:
Flexible Graphite, Polytetrafluoroethylene (PTFE)
Protection Grade:
IP66
Applicable Medium
- Water
- Steam
- Gas
Standards Compliance
Manufacturing Standard:
GB/T 12238-2008
Flange Standard:
GB/T 9124.1-2019
GB/T 9124.2-2019
GB/T 17241.6-2008
Inspection Standard:
GB/T 13927-2022
Structure Length Standard:
GB/T 12221-2005
Main Parameters
| Nominal Diameter DN (mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |
| Rated Flow Coefficient KV | Linear | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 690 |
| Equal Percentage | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | |
| Rated Stroke L (mm) | 16 | 25 | 40 | 60 | ||||||||
| Allowable Pressure Difference (MPa) | 3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0.7 | 0.6 | 0.5 | 0.3 | |
| Nominal Pressure (MPa) | 1.6Mpa、4.0MPa、6.4MPa | |||||||||||
| Connection Type | Flanged, Threaded, Welded | |||||||||||
| Seat Type | Single Seat | |||||||||||
| Plug Type | Single Seat Plunger Type Plug | |||||||||||
| Electric Actuator | Model | 3610 Series, PSL Series, etc. | ||||||||||
| Power Supply | AC220V、380V、24V | |||||||||||
| Flow Characteristic | Linear, Equal Percentage | |||||||||||
| Valve Body Material | SUS304、SUS316，WCB | |||||||||||
| Valve Seat Material | 304 、316 、316L | |||||||||||
| Valve Stem Material | 304、316、316L | |||||||||||
| Packing Material | PTFE / Flexible Graphite | |||||||||||
| Sealing Type | Hard Seal, Soft Seal | |||||||||||
Note: The data in the table are the standard configurations of our company and can be customized according to user requirements.
Dimension Drawing
1.Installation Dimension Drawing of Single-Seat Electric Control Valve
| ValvesizeDN(mm) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | |
| L | PN16.40 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 600 |
| PN64.100 | 205 | 210 | 230 | 251 | 286 | 311 | 337 | 394 | 450 | 508 | 650 | |
| H | PN16.40 | 52 | 57 | 75 | 75 | 82 | 92 | 100 | 117 | 150 | 167 | 187 |
| PN64.100 | 66 | 70 | 85 | 85 | 90 | 103 | 108 | 125 | 173 | 195 | 208 | |
| H1 | 125 | 125 | 155 | 155 | 165 | 200 | 205 | 210 | 275 | 330 | 372 | |
| A*H2 | Φ225*370 | Φ255*500 | Φ310*700 | Φ310*750 | ||||||||
| Weight(kg) PN16 | 20 | 21 | 24 | 33 | 37 | 65 | 68 | 56 | 118 | 145 | 215 | |
| Weight(kg) PN64 | 23 | 24 | 32 | 44 | 53 | 76 | 81 | 100 | 156 | 178 | 265 | |
2.Models and Features of Commonly Equipped Electric Actuators for Single-Seat Electric Control Valves
| Single-seat electric control valve (equipped with 3610 electronic actuator) | Single-seat electric control valve (equipped with PSL actuator) |
 |  |
| 1.The controller adopts advanced hybrid integrated circuits and is sealed, cast and cured with resin, featuring high reliability, moisture resistance and shock resistance. 2.The actuator itself has a servo function without an additional servo amplifier. 3.The motor is equipped with an internal temperature protection switch. 4.The motor is equipped with an internal mechanical damping brake system. 5.Zero point, stroke and sensitivity can be easily adjusted via a potentiometer. 6.Forward/reverse action and three signal failure modes (fail-locked, fail-open, fail-close) can be selected arbitrarily via function switches. 7.The output shaft of the linear actuator is equipped with a spring that ensures rated load. 8.A torque protection switch can be built into the rotary actuator. 9.The actuator is self-locking after power failure. | 1. The stroke of PSL linear electric actuators is adjustable, facilitating connection with valves. 2. All electrical components are imported, effectively ensuring high quality and reliability of the product. 3. Electrical parts are properly wired and completely isolated from transmission components, improving operational reliability. 4. Connected with valves via flexible coil springs, which avoids impacts caused by misalignment between the valve stem and the output shaft. The valve closing force can be preset to ensure reliable shut-off and prevent leakage. 5. The transmission adopts fully sealed low-backlash gears, featuring high efficiency, low noise, long service life, stability and reliability, with no need for re-lubrication. 6. Multiple operating speeds are available to meet the requirements of various control systems, ensuring fast response and stability of the system. 7. The valve position feedback element adopts a fully sealed high-precision multi-turn potentiometer, characterized by small size, high precision, small dead zone and long service life. |
3.Operating Temperature and Pressure Ranges of Valve Internals and Packing Materials
4.Applicable Standards for Single-Seat Electric Control Valves
| Manufacturing Standards | GB/T 122387-89 |
| Flange Standards | GB9113-2000、GB17241.6-1998 |
| Face-to-Face Dimensions Standards | GB12221-89 |
| Inspection Standards | GB/T 13927-92 |
Circuit Diagram
S
MS
PIU
CPT
PCU
G
SP
