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The CVPS high-pressure single-seated control valve is a precision execution unit specifically designed for modern industrial applications involving high pressure, high differential pressure, and high temperature. This valve integrates a high-performance multi-spring pneumatic diaphragm actuator with a reinforced single-seated globe-style valve body. The core design features a high-strength body structure and hardened internal components to effectively resist impact, erosion, and cavitation damage from high-pressure fluids. By receiving standard 4-20mA signals from control systems, the actuator converts pneumatic power into linear displacement to drive the plug accurately, achieving continuous proportional regulation of flow and pressure. With its superior shut-off integrity, extreme pressure resistance, and stability, the CVPS series is widely used in power plant feedwater, desuperheating water, high-pressure chemical processes, and oil and gas gathering systems.

Product Image of CVPS High-Pressure Single-Seated Control Valve
Feature
1.Superior high-pressure load capacity:The body is manufactured from high-quality forged steel or heavy-duty cast steel with sufficient wall thickness, fully complying with international high-pressure valve standards to ensure safety under pressure fluctuations.
2.Tight shut-off performance:The single-seated plug design combined with precision-ground metal hard seals or resilient soft seals ensures minimal leakage in the closed position, meeting ANSI Class IV or VI standards.
3.Excellent guiding stability:Utilizes an enhanced top-guided structure with high-precision fitting between the sleeve and stem. This design suppresses plug vibration and mechanical noise caused by high-velocity flow, extending seal life.
4.Anti-cavitation and erosion resistance:Internals can be selected as hardened stainless steel or Stellite hard-faced alloys. For extreme pressure drops, multi-stage throttling trims are available to mitigate flashing and cavitation damage.
5.Precision pneumatic actuator:Equipped with a compact multi-spring actuator providing powerful and stable thrust. Paired with a smart positioner, it achieves micron-level positioning and high dynamic response frequency.
6.Intrinsically safe attributes:Driven by clean compressed air without spark risks, providing natural explosion-proof safety suitable for hazardous oil, gas, and chemical zones.
7.Flexible material configuration:Available in WCB, CF8, CF8M, and high-temp alloy steels like WC6 or WC9. Bonnets can be standard, extended, or finned based on temperature requirements.
8.Convenient modular maintenance:The top-entry assembly allows for the online inspection and replacement of the plug, seat, and packing without removing the valve body from the pipeline, significantly lowering O&M costs.

Structural Drawing of CVPS High-Pressure Single-Seated Control Valve
List of Component Names and Materials
| No. | Part Name | Material 1 | Material 2 | Material 3 |
| 1 | Valve Body | WCB | 304 | 316 |
| 2 | Gasket | PTFE Graphite Gasket | PTFE Graphite Gasket | PTFE Graphite Gasket |
| 3 | Cage | 304 | 304 | 316 |
| 4 | Plug | 304 | 304 | 316 |
| 5 | Body Gasket | PTFE Graphite Gasket | PTFE Graphite Gasket | PTFE Graphite Gasket |
| 6 | Bonnet | WCB | 304 | 316 |
| 7 | Bolt | 25 | Stainless Steel | Stainless Steel |
Performance Specification Sheet
| Performance Specification Sheet | ||||
| Nominal Pressure | 900 | 1500 | 2500 | LB |
| Strength test pressure | 1350 | 2250 | 3750 | |
| Sealing test pressure | 990 | 1650 | 2750 | |
| Applicable Temperature | -29~560 | ℃ | ||
Standard requirements for external dimensions
1. The structural length of the valve shall comply with the standard of GB/T12221
2. Connecting flanges according to GB/T17241.6 standard
Outline dimension table(Unit:mm)
| Nominal Diameter | Actuator | H (ANSI 900 / JIS 63K) | H(ANSI 1500) | H(ANSI 2500) | E(ANSI 900) | E(ANSI 1500) | E(ANSI 2500) | C | ΦB |
| Standard (P) / Extended (EI) | Standard (P) / Extended (EI) | Standard (P) / Extended (EI) | |||||||
| 25 | HA3D、R | 710 / 840 | 710 / 840 | 740 / 860 | 90 | 90 | 95 | 363 | 350 |
| HA4D、R | 870 / 1000 | 870 / 1000 | 900 / 1020 | 520 | 470 | ||||
| VA6R | 1115 / 1245 | 1115 / 1245 | 1145 / 1265 | - | 445 | ||||
| VP5 | 895 / 1025 | 895 / 1025 | 925 / 1045 | - | 345 | ||||
| 40 | HA3D、R | 735 / 875 | 735 / 875 | 780 / 925 | 100 | 105 | 120 | 363 | 350 |
| HA4D、R | 890 / 1030 | 890 / 1030 | 935 / 1080 | 520 | 470 | ||||
| HA4x2 | 1140 / 1280 | 1140 / 1280 | 1185 / 1350 | 520 | 470 | ||||
| VA6R | 1140 / 1280 | 1140 / 1280 | 1185 / 1350 | - | 445 | ||||
| VP5 | 920 / 1060 | 920 / 1060 | 965 / 1110 | - | 345 | ||||
| VP6 | 1140 / 1280 | 1140 / 1280 | 1185 / 1380 | - | 445 | ||||
| 50 | HA3D、R | 765 / 925 | 765 / 925 | 800 / 960 | 110 | 120 | 130 | 363 | 350 |
| HA4D、R | 925 / 1085 | 925 / 1085 | 960 / 1120 | 520 | 470 | ||||
| HA4x2 | 1175 / 1335 | 1175 / 1335 | 1210 / 1370 | 520 | 470 | ||||
| VA6R | 1175 / 1335 | 1175 / 1335 | 1210 / 1370 | - | 445 | ||||
| VP5 | 955 / 1115 | 955 / 1115 | 990 / 1150 | - | 345 | ||||
| VP6 | 1175 / 1335 | 1175 / 1335 | 1210 / 1370 | - | 445 | ||||
| VP7 | 1270 / 1420 | 1270 / 1420 | 1305 / 1465 | - | 545 | ||||
| 80 | HA3D、R | 800 / 980 | 800 / 980 | 835 / 1005 | 140 | 150 | 165 | 363 | 350 |
| HA4D、R | 960 / 1140 | 960 / 1140 | 995 / 1165 | 520 | 470 | ||||
| HA4x2 | 1205 / 1385 | 1205 / 1385 | 1240 / 1410 | 520 | 470 | ||||
| VA6R | 1205 / 1385 | 1205 / 1385 | 1240 / 1410 | - | 445 | ||||
| VP5 | 985 / 1165 | 985 / 1165 | 1020 / 1190 | - | 345 | ||||
| VP6 | 1205 / 1385 | 1205 / 1385 | 1240 / 1410 | - | 445 | ||||
| VP7 | 1295 / 1475 | 1295 / 1475 | 1330 / 1500 | - | 545 |

Model:
ZG-16C/ZG-25C/ZG-40C/ZG-64C/ZG-16P/ZG-25P/ZG-40P/ZG-64P/ZG-16R/ZG-25R/ZG-40R/ZG-64RSpecification:
DN15-DN250Pressure:
PN16,PN25,PN40,PN64Material:
Cast Steel,Stainless Steel,Duplex Stainless Steel
Model:
V230Y11/12-1C/V230Y11/12-10C/V230Y11/12-1P/V230Y11/12-10P/V230Y11/12-1R/V230Y11/12-10RSpecification:
DN20-DN100Pressure:
PN0.1、PN1.0Material:
Cast Steel,Stainless Steel,Duplex Stainless Steel
Model:
ZL-16C/ZL-25C/ZL-40C/ZL-16P/ZL-25P/ZL-40P/ZL-16R/ZL-25R/ZL-40RSpecification:
DN15~250Pressure:
PN1.6~4.0MPaMaterial:
Cast Steel,Stainless Steel,Duplex Stainless Steel