Email: [email protected]
Phone: +91 93135 43530
Address: 133/1 Ground, Mansuri Block, Opp. Dudheshwar Water Tank, Ahmedabad-380004, Gujarat, India
CF8M Stainless Steel Valve Supplier India | SS316 Gate / Globe / Check Valve | Flanged Class 150# | ASTM A351 CF8M | KELOR
Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Material: ASTM A351 CF8M (SS316)
End Connection: Flanged ASME B16.5 Class 150 | Testing: API 598
CF8M — What It Means and When to Specify It
CF8M is the ASTM A351 casting grade equivalent to wrought SS316 (AISI 316). The designation breaks down as: C = corrosion resistant casting, F = austenitic, 8 = 18-8 chromium-nickel base, M = molybdenum addition (2–3% Mo). Furthermore, the molybdenum content is the key differentiator from CF8 (SS304 casting) — it provides resistance to chloride pitting and crevice corrosion that CF8 (SS304) does not have.
| ASTM Casting Grade | Wrought Equivalent | Key Difference | Specify For |
|---|---|---|---|
| CF8M | SS316 (AISI 316) | 2–3% Mo — chloride pitting resistance | ✅ Corrosive chemical, chloride service, seawater, coastal industrial, pharma, food GMP |
| CF8 | SS304 (AISI 304) | No Mo — general corrosion resistance | Non-chloride service — DM water, mild chemical, food non-chloride |
| CF3M | SS316L (AISI 316L) | Low carbon 0.03% max — sensitisation-free in welded piping | Pharma GMP welded piping — PW, WFI, clean steam — where USFDA/WHO GMP cites 316L |
CF8M Flanged Class 150# Valves Supplied — Select Your Valve Type
Krishna Industries supplies CF8M (SS316) valves in flanged Class 150# across three valve types. Each has a dedicated product page with full specifications, application guides, and ordering information. Select the correct valve type for your application:
| Valve Type | Function | Typical CF8M Application | Page |
|---|---|---|---|
| SS Gate Valve — CF8M | On/off isolation — full bore — multi-turn — infrequent operation — near-zero pressure drop when fully open | Main line isolation on corrosive chemical process lines, SS flanged piping isolation where full bore and low pressure drop is required, coastal industrial pipeline block valves | → SS316 Gate Valve |
| SS Globe Valve — CF8M | Throttling and flow control — modulating — multi-turn — designed for partial open service — higher pressure drop than gate or ball valve | Chemical dosing rate control, DM water flow control, pharma utility flow regulation, cooling water bypass control — any application requiring flow rate adjustment rather than simple on/off isolation | → SS Globe Valve (SS304/SS316) |
| SS Check Valve — CF8M | Non-return valve (NRV) — prevents backflow automatically — no operator — disc opens under forward flow pressure, closes on reverse flow | Pump discharge backflow prevention on corrosive chemical and SS process piping, SS pipeline non-return service, pharma utility pump protection | → CF8 / CF8M Dual Plate Check Valve |
Common Specifications — CF8M Flanged Class 150#
| Parameter | Specification |
|---|---|
| Body Material | ASTM A351 CF8M (SS316 equivalent casting) |
| Trim Material | CF8M — full SS316 trim (disc, seat, stem) |
| End Connection | Flanged ASME B16.5 Class 150 — raised face (RF) standard |
| Size Range | DN15 (½”) to DN300 (12″) — size range varies by valve type |
| Pressure Rating | Class 150# (ASME B16.5) — approximately 19 bar at ambient for CF8M |
| Design Standards | Gate: API 600 / BS 1414 — Globe: BS 1873 — Check: API 594 / BS 5153 |
| Testing Standard | API 598 — shell hydrostatic test + seat leakage test |
| Material Certification | MTC — ASTM A351 CF8M heat certificate — chemical composition + mechanical properties |
| MOQ | 10 Nos |
| HSN Code | 84818090 (gate/globe) / 84813090 (check valve) |
Applications in Indian Industries
- Chemical plants — Ankleshwar, Vapi, Dahej: CF8M body resists chloride, acid, and alkali service where CF8 (SS304) pits — flanged Class 150 matches most Indian chemical plant utility piping class — gate valve for isolation, globe valve for flow control, check valve for pump protection
- Pharmaceutical utilities: CF8M specified for non-GMP welded utility piping where SS316 is the project material — PW distribution, cooling water, process utilities — gate valve for isolation, globe valve for flow regulation
- Coastal and offshore industrial: CF8M molybdenum content resists seawater and salt air corrosion — coastal Gujarat industrial plants (Dahej, Hazira, Mundra) where SS304 pitting in chloride environment is a documented maintenance problem
- Food processing — chlorinated CIP service: CF8M resists chlorinated CIP chemicals (peracetic acid, sodium hypochlorite) that attack CF8 — gate and globe valves on CIP supply and return lines
Related Products — Krishna Industries (KELOR)
- SS316 Ball Valve — CF8M body — quarter-turn on/off isolation — faster operation than gate valve — standard for frequent switching on the same CF8M process piping
- SS316 Y Strainer — CF8M or CF8 body — flanged Class 150 — install upstream of CF8M gate and globe valves to protect trim from particulate damage
- SS316 Flanges — ASTM A182 F316 flanges — matching material to CF8M valve body — supply together for consistent SS316 flanged piping assembly
- Stud Bolt — A193 B7 — standard fasteners for ASME B16.5 Class 150 CF8M flanged valve connections
Frequently Asked Questions
1. What is CF8M and how does it differ from CF8?
CF8M is the ASTM A351 casting grade equivalent to SS316 — it contains 2–3% molybdenum added to the 18-8 chromium-nickel base. The molybdenum provides chloride pitting resistance that CF8 (SS304 casting equivalent) does not have. Specify CF8M wherever chloride-containing media, seawater, or aggressive chemical service requires the higher corrosion resistance of SS316. Specify CF8 for non-chloride service where the lower cost of SS304 equivalent is acceptable.
2. Can I order gate, globe, and check valves together in one order?
Yes — Krishna Industries supplies mixed valve type orders in one consolidated shipment with one GST invoice. WhatsApp your BOM listing valve type (gate / globe / check), size, and quantity per line item for consolidated project pricing within 2 hours.
3. What MTC is provided for CF8M valves?
Every CF8M order includes MTC confirming ASTM A351 CF8M — chemical composition (chromium 18–21%, nickel 9–12%, molybdenum 2–3%, carbon max 0.08%) and mechanical properties (tensile strength, yield strength, elongation) with heat number traceability. This MTC is the document specifying authorities and QA teams request to verify CF8M material compliance.
4. What is the MOQ?
MOQ is 10 Nos per valve type per size. Mixed BOM orders across gate, globe, and check valves are welcome — each line item has its own 10 Nos MOQ. WhatsApp valve type, size list, and quantity for pricing within 2 hours.
Conclusion
Krishna Industries (KELOR) supplies CF8M (ASTM A351 SS316 equivalent) Gate Valves, Globe Valves, and Check Valves in flanged ASME B16.5 Class 150 for corrosive chemical, pharma, food, coastal industrial, and process plant applications — API 598 tested — MTC ASTM A351 CF8M — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad. Select your valve type from the links above or WhatsApp your BOM for consolidated pricing within 2 hours.