utility
Valves for Cooling Water Service
Cooling water - open or closed circuit - is found in almost every industrial plant. Corrosion, scaling, and microbiological fouling are the main concerns. Open circuit cooling towers use treated water with biocides and corrosion inhibitors. Closed-loop systems are typically less corrosive.
Pressure Range
1–16 bar
Temperature
10–50°C (open circuit); up to 90°C (closed loop)
Industries
Power plants, Refineries, Chemical plants
What valves are used for Cooling Water service?
Resilient-seated butterfly valve (EPDM) are recommended for Cooling Water service: Standard for cooling water isolation - PN 10/16, cost-effective for large bore.
Key Properties - Cooling Water
- Open circuit: risk of MIC (microbiological corrosion), scaling, and corrosion
- Chlorine and biocide addition can affect elastomers
- Water chemistry (pH, TDS, hardness) determines material requirements
- Velocity: carbon steel acceptable above 1 m/s to prevent settling
- Closed loop: inhibitor-treated, lower corrosion risk than open circuit
Vajra Industrial Solutions manufactures and supplies valves for Cooling Water service — including resilient-seated butterfly valve (epdm) — in corrosion-appropriate materials selected for the operating conditions described here, with full material and test documentation.
Need valves for Cooling Water service?
Send your fluid conditions — we'll recommend the right valve, material and standard, with a 24-hour quote.
Material Compatibility - Cooling Water
Ratings are indicative. Actual compatibility depends on concentration, temperature, velocity, and presence of contaminants. Always consult corrosion tables or a materials engineer.
| Material | Rating | Notes |
|---|---|---|
| Carbon Steel (WCB/A105) | Good | Standard for closed-loop cooling water. Open circuit: corrosion inhibitor program required. |
| Ductile Iron | Good | Widely used in cooling water systems - flanged to ASME/EN. |
| SS 316L | Excellent | For high-quality or process-critical cooling water systems. |
| Cupro-Nickel 90/10 | Good | Good for saline or brackish cooling water. |
| EPDM (seat/seal) | Excellent | Standard for cooling water butterfly and ball valve seats. |
| NBR | Good | Acceptable - verify compatibility with specific biocide and inhibitor chemicals used. |
Recommended Valves
Resilient-seated butterfly valve (EPDM)
Standard for cooling water isolation - PN 10/16, cost-effective for large bore
Full selection guideDual-plate wafer check valve
Non-return on cooling water pumps - compact, low pressure drop
Full selection guideValves to Avoid
Unlined cast iron valves in biocide-treated or chlorinated cooling water
Bronze/brass valves where zinc dezincification is a risk (low pH, high flow)
PTFE-seated ball valves where biofouling on ball seat is a risk
Special Considerations
Applicable Standards
Shop Valves for Cooling Water Service
Other Fluid Services
Cooling Water Service — Procurement & Specification
Typical Applications
Available Standards
Material Options
Documentation Available
- -EN 10204 3.1 Material Test Certificates (heat traceable)
- -API 598 hydrostatic shell & seat test reports
- -Dimensional inspection reports
- -Full Manufacturing Data Record (MDR) / data book on request
Inspection Options
- -In-house QC inspection on every order
- -Third-party inspection (SGS / Bureau Veritas / TÜV / DNV) coordination
- -Witness and hold points accommodated on request
Order Quantities
Flexible — from single critical-spare valves to full project lots.
Export
Worldwide export with complete documentation (COO, EUR.1, packing lists) to 20+ countries.
Custom Engineering
Built to your specification — materials, trim, pressure class and special service (NACE, fire-safe, IBR, cryogenic).
Delivery Support
Dispatch from Vadodara, Gujarat with documented lead times and priority handling for urgent requirements.
Engineering references
Connected Engineering
Need Valves for Cooling Water Service?
Tell us your fluid, pressure, and temperature — we'll recommend the right valve, material, and standard, with a 24-hour quote.