Durco Valve Alternative
Durco International / Flowserve Durco (Mark Controls)
Durco International (now part of Flowserve Corporation as Flowserve Durco) is the specialist in highly corrosion-resistant alloy valves for the chemical, petrochemical, pulp & paper, and pharmaceutical industries. The Durco Mark 3 globe valve and Durco butterfly valve in CN7M (Alloy 20), Hastelloy C-276, and PVDF-lined configurations are specified for concentrated sulphuric acid, hydrochloric acid, chlorine dioxide, and chloride-bearing process streams. Vajra Industrial Solutions supplies technically equivalent corrosion-resistant alloy valves in ASTM A351 CN7M (Alloy 20), Hastelloy C-276, Monel 400, and titanium Grade 2 materials - covering globe valves, ball valves, butterfly valves, and check valves for aggressive chemical service.
What is a good alternative to Durco valves?
Vajra Industrial Solutions supplies API 6D and ASME B16.34 valves engineered to meet the same service requirements as Durco. Corrosion-resistant alloy valves for chemical service - Alloy 20, Hastelloy C-276, titanium, and high-silicon iron butterfly, globe, and ball valves
Why Consider Durco Alternatives?
Durco → Vajra Equivalence Reference
Indicative equivalences for common Durco valve series. Dimensional and specification compatibility must be verified by the project engineer before substitution.
| Type | Durco Series | Vajra Equivalent | Notes |
|---|---|---|---|
| Globe Valve | Durco Mark 3 Globe Valve (CN7M / Alloy 20) | Alloy 20 CN7M Globe Valve - ASME B16.34 Class 150–300 | ASTM A351 CN7M, Class 150–300, flanged RF/RTJ, sulphuric acid service |
| Butterfly Valve | Durco Lined Butterfly Valve (PVDF/PTFE lined) | PVDF-Lined Butterfly Valve - ASME B16.34 | CS body + PVDF liner, PTFE seat, DN50–DN300, chlorine/HCl service |
| Ball Valve | Durco Hastelloy C-276 Ball Valve | Hastelloy C-276 Ball Valve - ASME B16.34 Class 150–600 | ASTM A494 CW-6M, Class 150–600, flanged, mixed acid and HF service |
| Globe Valve | Durco Titanium Globe Valve (Ti Grade 2) | Titanium Grade 2 Globe Valve - ASME B16.34 | ASTM B367 Grade 2, seawater and oxidising acid service, Class 150 |
Why Choose Vajra
Certifications & Standards
Common Applications
Explore Equivalent Valve Categories
Other Brand Alternatives
Connected Engineering
Durco Equivalent — Procurement & Documentation
Typical Applications
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.
Need an Alternative to Durco?
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