Description
GESTRA CW 44 & CW 44k PN 25 Cooling-Water Control Valves | Gestramat®
The cooling-water control valves reduce the cooling water consumption by ensuring that full use is made of the cooling capacity of the water. They ensure perfect distribution of the cooling water and maintain the cooling-water outlet temperature at a preset value suitable for the process.
As direct acting proportional controllers the valves are installed in the cooling-water return line as close to the unit as possible. The desired outlet temperature is adjusted with the setting screw.
An adjustable bleed flow ensures quick response during variations in load and during start-up.
The valves should be installed in horizontal lines (cover pointing downwards). During periods of shut-down of the plant they should be left full of water to prevent the formation of deposits.
Range
Max. service pressure. . . 25 barg (360 psig)
Max. differential pressure. . . 16 bar (230 psi)
Differential pressure = inlet pressure minus outlet pressure.
Connections
Screwed sockets to BSP 3/8″, 1/2″, 3/4″, or 1″
Design
Body in straight-through pattern. Valve cone with spring-loaded solid-state expansion thermostat.
2 setting screws, each provided with a plug to prevent deliberate or accidental maladjust-ment, one for adjusting outlet temperature, the other for adjusting bleed flow. Adjusting key, 5 mm to DIN 911 fits all sizes.
- CW 44 with standard thermostat:
-2 to +106 °C - CW 44k with thermostat for brine:
-37 to +71 °C.
Materials
- Body and cover: Forged steel C 22.8 (DIN No. 1.0460)
- Valve cone and thermostat: Brass CuZn 39 Pb 2 (2.0380)
- Spring: Stainless steel X 6 CrNiMoTi 17 12 2 (1.4571)
- Valve seat: Stainless steel X 12 CrMoS 17 (1.4104) O ring: EPDM
- Setting-screw housings: Brass CuZn 39 Pb 3 (2.0401)
Technical data
CW 44: Valve with standard thermostat
CW 44k: Valve with thermostat for brine
| Nominal size (DN) | ⅜” | ½” | ¾” | 1″ | ||
|---|---|---|---|---|---|---|
| kvs value in m³/h Preset bleed flow in m³/h |
0.66 0.025 |
1.37 0.07 |
||||
| Necessary Δt for full valve lift | 10.5 K | |||||
| Time constant | 60 s | |||||
| Hysteresis | 3 K | |||||
| Adjustable outlet temperatures | CW 44 | -2 to +106 °C | ||||
| CW 44k | -37 to +71 °C | |||||
| Temporary admissible max. temperature | CW 44 | 120 °C | ||||
| CW 44k | 85 °C | |||||
| Spring force | 250 N | |||||
| Approx. weight in kg | 3.2 | 3.1 | 3.1 | 3 | ||
Cv (U.S.) = 1.17 · kv
Cv (U.K.) = 0.98 · kv
GESTRA CW 44 & CW 44k PN 25 Cooling-Water Control Valves | Gestramat®
GESTRA: The Ultimate Solution for Industrial Steam & Fluid Control Systems
Overview of GESTRA CW 44 & CW 44k Cooling-Water Control Valves
The GESTRA CW 44 and CW 44k PN 25 Cooling-Water Control Valves Gestramat® are premium industrial control valves engineered for accurate cooling-water flow regulation in demanding thermal and process control systems. Designed by GESTRA, a global leader in industrial valve technology, these valves deliver exceptional reliability, precise modulation, and long-term operational stability.
The CW 44 and CW 44k models are widely used where consistent temperature control and dependable cooling-water performance are critical to system efficiency and equipment protection.
Why Choose GESTRA CW 44 & CW 44k PN 25 Cooling-Water Control Valves?
1. Precision Cooling-Water Regulation
The Gestramat® control design ensures:
- Accurate flow modulation
- Stable temperature control
- Reduced thermal stress on equipment
This precision improves heat exchange efficiency and prevents overheating in industrial systems.
2. Robust PN 25 Pressure Rating
With a PN 25 pressure class, CW 44 and CW 44k valves are suitable for:
- Medium-pressure cooling-water systems
- Continuous industrial operation
- High-demand thermal applications
This makes them ideal for both new installations and system upgrades.
3. Durable Construction for Long Service Life
Manufactured using high-quality materials, the GESTRA CW 44 Series offers:
- Excellent corrosion resistance
- High mechanical strength
- Reliable operation in aggressive cooling-water environments
These features significantly reduce maintenance and downtime.
4. Gestramat® Control Technology Advantage
The Gestramat® control principle provides:
- Smooth valve travel
- Minimal hysteresis
- High control accuracy
This ensures consistent performance even under fluctuating load conditions.
Difference Between GESTRA CW 44 and CW 44k
| Feature | CW 44 | CW 44k |
|---|---|---|
| Application | Standard cooling-water control | Enhanced control for higher dynamics |
| Control Accuracy | High | Very high |
| Operating Stability | Excellent | Superior |
Both versions are optimized for industrial cooling-water applications, with CW 44k offering enhanced control characteristics.
Key Technical Features
- Cooling-water control valve PN 25
- Optimized flow characteristics for temperature regulation
- Compatible with pneumatic and electric actuators
- Maintenance-friendly design
- High operational reliability
- Designed for continuous industrial service
Typical Applications of CW 44 & CW 44k Control Valves
- Heat exchangers
- Condensers
- Power plants
- Industrial cooling systems
- Chemical and petrochemical processes
- HVAC and energy management systems
These valves are essential where precise cooling-water control directly impacts process safety and efficiency.
Benefits for Engineers and Plant Operators
Choosing GESTRA CW 44 & CW 44k Gestramat® Cooling-Water Control Valves provides:
- Improved temperature stability
- Reduced energy consumption
- Extended equipment life
- Lower maintenance costs
- Increased overall plant efficiency
This results in optimized operational performance and reduced total cost of ownership (TCO).
Why Buy Genuine GESTRA Gestramat® Valves?
Original GESTRA products guarantee:
- Manufacturer-certified quality
- Proven industrial performance
- Full technical documentation
- Compliance with international standards
Avoid non-original alternatives that may compromise safety and efficiency.
Frequently Asked Questions (FAQ)
What is the pressure rating of GESTRA CW 44 & CW 44k?
Both models are rated PN 25, suitable for medium-pressure cooling-water applications.
Are these valves suitable for continuous operation?
Yes. They are designed for continuous industrial service with high reliability.
Can these valves be automated?
Yes. CW 44 and CW 44k valves are compatible with pneumatic and electric actuators.
Order GESTRA CW 44 & CW 44k PN 25 Cooling-Water Control Valves Today
Upgrade your cooling-water control system with GESTRA CW 44 & CW 44k Gestramat® Control Valves—the trusted solution for industrial precision and durability.
📩 Contact us now for:
- Competitive pricing
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- Datasheets and specifications
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