C700 Series Low-Noise Control Valve
Datasheet
Download datasheet (PDF)Specifications are indicative. Final specification is confirmed at quotation.
Specifications
Confirmed at quote- Size Range
- DN25 to DN700
- Pressure Class
- PN16, PN25, PN40, PN63, PN100, Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500
- Operating temperature
- -196°C to 345°C, by material
Configure your variant(manually adjust box on the right if you require a different spec)
- Size
- Pressure
Materials
All available material options per part. Click a pill to set it in the configurator.
- Body
Temperature by material
The temperature limit follows the material grade, so the range above spans every grade offered rather than any one build. Confirmed at quotation.
- WCB
- -29°C to 345°C
- WCC
- -29°C to 345°C
- WC6
- -29°C to 345°C
- WC9
- -29°C to 345°C
- LCB
- -46°C to 345°C
- LCC
- -46°C to 345°C
- CF8
- -196°C to 345°C (cryogenic service requires an extended bonnet and a BS 6364 type test)
- CF8M
- -196°C to 345°C (cryogenic service requires an extended bonnet and a BS 6364 type test)
- CF3
- -196°C to 345°C (cryogenic service requires an extended bonnet and a BS 6364 type test)
- CF3M
- -196°C to 345°C (cryogenic service requires an extended bonnet and a BS 6364 type test)
Operating media
Typical applications
- Petroleum and petrochemical
- Chemical engineering
- Metallurgy
- Power stations
- Air separation equipment
- Liquefied natural gas (LNG)
- Water supply
- Mining
- Light textile
- Energy
- Papermaking
- Food processing
- Steel industry
Actuation options
Features
- Multi-stage plugs and porous sleeve structure to gradually reduce fluid velocity, disperse energy, and minimise turbulence and cavitation
- Noise reduction typically 20-40 dB compared to conventional control valves
- S-shaped streamline fluid passage with deflector wing for smooth flow around the sleeve
- Pressure-balanced plug structure enabling high-pressure-difference control with reduced actuator output force
- Sleeve equipped with multiple symmetrical small holes to reduce pressure drop
- Flow characteristics: linear or equal percentage
- CDN702 dual-directional structure ensures valve stability under high differential pressure
- RSMF series multi-spring pneumatic diaphragm actuator: compact structure, high output force, long service life
- Suitable for fluid flow, pressure, temperature, and liquid level regulation
Description
The C700 Series Low-Noise Control Valve comprises the CN702 and CDN702 sub-series, designed to reduce noise in compressible fluid applications. The plug uses a pressure-balanced structure; the sleeve is fitted with multiple symmetrical small holes to reduce pressure drop, and the S-shaped streamline fluid passage includes a deflector wing to promote smooth flow. The result is low pressure-drop loss, high flow capacity, reduced noise (typically 20-40 dB reduction), and minimised cavitation.
Selection notes
This control valve is a low-noise cage-guided and high differential pressure cage-guided pattern.
Sizes run DN25 to DN700, in PN16, PN25, PN40, PN63, PN100, Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500.
The body is offered in WCB, WCC, LCB and LCC, so the grade can be matched to the service rather than the other way round.
Stated service media include compressible fluids (gases), water, petroleum/petrochemical fluids, chemical fluids, metallurgical process fluids and lng.
It is catalogued for Water & Wastewater and Oil & Gas.
Working temperature is -196°C to 345°C, by material.
Available pressure classes
Pressure classes this product is rated to.
Used in
Related guides
Smart find
Searches our product catalogue using your spec. Drop a spec sheet or parts list (PDF, Excel, CSV, Word or text, several at once), paste a description or a part number and we'll find the closest matches for each. Anything we can't match goes to your RFQ as a custom enquiry for our team to source.Linear Series configurations
View full Linear Series system →C700 Series Single-seat Control Valve
DN15 to DN300
C700 Series Cage-guided Control Valve
DN25 to DN700
Axial Flow Control Valve
DN50 to DN1200
C700 Series Angle Control Valve
DN40 to DN300
C700 Series Bellow-sealed Control Valve
DN15 to DN300
C700 Series Specialty Control Valve
DN15 to DN300
CHM703 High-Pressure, High-Temperature, Multi-Stage Pressure-Reducing Control Valve
DN25 to DN450
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