utilityH₂O (treated)
Valves for Boiler Feedwater (BFW) Service
Boiler feedwater is highly purified, deaerated, and chemically dosed water supplied to steam boilers at pressure and elevated temperature. It is one of the most common valve service conditions in industrial plants. BFW is relatively benign to materials when properly treated (low dissolved oxygen, controlled pH 8.5–9.5, low TDS) but the high pressure and temperature demand proper pressure class selection, and erosion from high-velocity flow is a key concern for globe and gate valves.
Pressure Range
20–200 barg (boiler operating pressure + pump head)
Temperature
100–360°C
Industries
Thermal power plants, Refineries, Chemical plants
What valves are used for Boiler Feedwater (BFW) service?
Gate Valve (OS&Y, WCB/WC6) are recommended for Boiler Feedwater (BFW) service: Isolation on BFW headers and boiler connections - API 600 pattern, IBR certifiable.
Key Properties - Boiler Feedwater (BFW)
- Treated, deaerated water: pH 8.5–9.5, very low TDS and dissolved oxygen
- High temperature: 100–360°C; high pressure: 20–200+ barg
- Erosion concern at high velocity - globe and gate valve trim must be hardened
- Oxygen scavenging chemicals (hydrazine or carbohydrazide) dosed upstream
- IBR (Indian Boiler Regulations) certification required in India for steam circuits
Vajra Industrial Solutions manufactures and supplies valves for Boiler Feedwater (BFW) service — including gate valve (os&y, wcb/wc6) — in corrosion-appropriate materials selected for the operating conditions described here, with full material and test documentation.
Need valves for Boiler Feedwater (BFW) service?
Send your fluid conditions — we'll recommend the right valve, material and standard, with a 24-hour quote.
Material Compatibility - Boiler Feedwater (BFW)
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/WC6/WC9) | Excellent | Standard material for BFW valves up to Class 2500. |
| A217 WC6 (1.25Cr-0.5Mo) | Excellent | For high-temperature BFW above 400°C. |
| SS 316L | Good | Used where specific chemical treatment demands SS, or pharmaceutical BFW. |
| Stellite trim (seat/disc) | Excellent | Mandatory for BFW globe valve and gate valve trim - erosion and galling resistance. |
Recommended Valves
Gate Valve (OS&Y, WCB/WC6)
Isolation on BFW headers and boiler connections - API 600 pattern, IBR certifiable
Full selection guideGlobe Valve (Stellite trim, IBR)
Control valve for BFW flow regulation to boiler - Stellite seat/disc mandatory
Full selection guideCheck Valve (lift/piston type)
Protection of BFW pump against reverse flow on pump discharge
Full selection guideSafety Relief Valve (IBR certified)
Mandatory per Indian Boiler Regulations on boiler steam drum connections
Full selection guideNeedle Valve
Isolation of pressure gauges, level gauges, and instrumentation on BFW lines
Full selection guideValves to Avoid
Ball valves for throttling BFW (high erosion at partial open)
Cast iron valves for high-pressure BFW
Special Considerations
Applicable Standards
Shop Valves for Boiler Feedwater (BFW) Service
Other Fluid Services
Boiler Feedwater (BFW) 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 Boiler Feedwater (BFW) Service?
Tell us your fluid, pressure, and temperature — we'll recommend the right valve, material, and standard, with a 24-hour quote.