Demineralised Water (DM Water / Deionised Water) service
Service Selection
Check Valves for Demineralised Water (DM Water / Deionised Water) Service
Which check valves configuration suits Demineralised Water (DM Water / Deionised Water), in which material, to which standard — from real service data, with the pitfalls flagged.
Which check valves for Demineralised Water (DM Water / Deionised Water)?
Check Valve (SS 316L piston or swing) - Pump discharge non-return - SS 316L to prevent iron contamination. Typical service window: 3–120 bar (boiler feedwater up to drum pressure), Ambient to 250°C (boiler feedwater at operating temperature).
Recommended Configurations
Check Valve (SS 316L piston or swing)
Pump discharge non-return - SS 316L to prevent iron contamination.
Body Material for Demineralised Water (DM Water / Deionised Water)
Rated from real compatibility data - click any material for the full decision page.
Governing Standards for Demineralised Water (DM Water / Deionised Water) Service
What to Avoid in Demineralised Water (DM Water / Deionised Water) Service
- Cast iron or carbon steel bodies (iron contamination and rapid corrosion in aggressive DM water)
- Bronze or brass valves (zinc/copper leaching into ultra-pure water)
- Valves with dead legs or blind spots where stagnant DM water can concentrate corrosion
Service Considerations
- Boiler feedwater (BFW): must meet specific dissolved oxygen limits - deaerator and chemical dosing required upstream of any carbon steel valves
- IBR compliance required for any valves in steam-generating systems
- Pharmaceutical and semiconductor: electropolished SS 316L internal surfaces, orbital welded joints, no dead legs - specify sanitary or bio-pharmaceutical valve standards (ASME BPE / EHEDG)
- DM water storage: must be kept nitrogen-blanketed or in stainless tanks to prevent CO₂ absorption
Other valve types for Demineralised Water (DM Water / Deionised Water)
Check Valves for other services
Check Valves for High-Pressure SteamCheck Valves for Carbon Dioxide (CO₂)Check Valves for Diesel Fuel / Fuel OilCheck Valves for Cooling WaterCheck Valves for Methanol (Methyl Alcohol)Check Valves for Hot Oil (Thermal Heat Transfer Fluid)Check Valves for MEG / Glycol (Monoethylene Glycol - Gas Dehydration)Check Valves for Oxygen (O₂ - Industrial and Medical Grade)
Reviewed by Process Engineering, Vajra Industrial SolutionsDiscipline: Process & Fluid Service EngineeringLast reviewed: 20 June 2026
Connected Engineering
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