Email: sales@kelorvalves.com
Phone: +91 93135 43530
Address: 133/1 Ground, Mansuri Block, Opp. Dudheshwar Water Tank, Ahmedabad-380004, Gujarat, India
SS304 · SS316 · EPDM · PTFE · DN50–DN600 · API 598 Tested
Wafer Check Valve Supplier India — SS304, SS316, EPDM, PTFE — EPC Selection Guide
Krishna Industries (KELOR), Ahmedabad — B2B wafer check valve (dual plate NRV) supplier since 2017. Supplying SS304 (CF8) and SS316 (CF8M) wafer check valves with EPDM, PTFE, or Viton seats. DN50 to DN600. PN10/PN16/Class 150. API 598 hydrostatic tested with certificates. GST invoice (GSTIN: 24AKLPP6499B1ZT). MOQ 10 Nos. Pan India dispatch to EPC contractors, chemical plants, water treatment facilities, and HVAC projects.
Quick answer: Krishna Industries (KELOR) is a B2B wafer check valve supplier in India — supplying SS304 and SS316 dual plate check valves in DN50 to DN600 — EPDM, PTFE, or Viton seated — PN10/PN16/Class 150 — API 598 tested with certificates — MOQ 10 Nos — GST invoice — Pan India dispatch. Request bulk pricing on WhatsApp.
Quick Reference
SupplierKrishna Industries (KELOR) — Ahmedabad, Gujarat
Body MaterialSS304 (CF8) · SS316 (CF8M)
Seat MaterialEPDM · PTFE · Viton (FKM)
Size RangeDN50 (2″) to DN600 (24″)
Pressure RatingPN10 / PN16 / Class 150
End ConnectionWafer Type (fits between standard flanges)
Testing StandardAPI 598 / BS EN 12266
HSN Code84813000
On This Page
- 1. Wafer Check Valve Types We Supply
- 2. Body Material Selection: SS304 vs SS316
- 3. Seat Material Selection: EPDM vs PTFE
- 4. Technical Specifications
- 5. Industries and Applications
- 6. Why EPC Contractors Choose Krishna Industries
- 7. Supply Coverage — PAN India
- 8. Commercial Information
- 9. Frequently Asked Questions
Wafer Check Valve Types We Supply
Select the variant that matches your project requirement. Our wafer dual plate check valves (Non-Return Valves) are designed for compact, lightweight, and reliable backflow prevention in vertical or horizontal pipelines. All valves are supplied from verified Indian manufacturers with API 598 testing and full documentation support including GST invoice, MTC, and hydrostatic test certificates.
SS304 Wafer Check Valve
CF8 body with EPDM or PTFE seat. Ideal for potable water, HVAC, and mild chemical services where chloride levels are low.
SS316 Wafer Check Valve
CF8M body with EPDM or PTFE seat. Mandatory for seawater, chloride-rich environments, aggressive chemical processing, and pharma.
PTFE Seated Wafer Check Valve
Universal chemical resistance for aggressive acids, alkalis, and solvents. Suitable for high-temperature applications up to 180°C.
EPDM Seated Wafer Check Valve
Cost-effective, resilient sealing for water, HVAC chilled/hot water, and mild industrial services up to 120°C.
Body Material Selection: SS304 vs SS316
Choosing the correct stainless steel grade ensures long valve life and safe operation in your specific service conditions. The most common specification error in EPC projects is using SS304 in chloride-rich or aggressive chemical environments, leading to pitting corrosion and premature valve failure.
| Body Material | Best Suited For | Compatible Media | Avoid For |
|---|---|---|---|
| SS304 (CF8) | Potable water systems, HVAC chilled/hot water loops, DM water, mild chemical service, food and beverage (non-chloride), pharma non-GMP utility piping. | Potable water, DM water, mild chemical, neutral pH fluids, low-chloride environments. | Chloride-rich water, seawater, aggressive acid/alkali, coastal marine environments — use SS316 instead. |
| SS316 (CF8M) | Chemically treated cooling water, seawater and coastal installations, aggressive chemical process, pharma GMP process lines, food GMP processing, offshore and marine applications. | Chloride media, treated water, corrosive chemical, moderate acid/alkali, seawater. | Highly reducing acids (e.g., hot concentrated HCl) — requires specialized alloys like Hastelloy or PTFE lining. |
Procurement Tip for EPC Projects
Always verify the process fluid composition, chloride content (ppm), and operating temperature before selecting the body material. For any application involving chlorides above 200 ppm, treated cooling water, or coastal exposure, upgrade to SS316. The cost difference between SS304 and SS316 is typically 15–25%, but the cost of emergency replacement and plant downtime due to pitting corrosion is exponentially higher.
Seat Material Selection: EPDM vs PTFE
The seat provides bubble-tight shut-off against the dual plates. Selecting the correct seat material is as important as selecting the body material. An incompatible seat will degrade, swell, or harden quickly, leading to leakage and water hammer issues.
| Seat Material | Temperature Range | Specify When | Do NOT Use When |
|---|---|---|---|
| EPDM | -40°C to +120°C | HVAC chilled and hot water, potable water, treated cooling water, ozone-treated water — most common and economical seat for water infrastructure. | Oil, fuel, petroleum products, hydrocarbons, strong oxidizing acids — EPDM swells and degrades in these media. |
| PTFE | -10°C to +180°C | Chemical service (acid, alkali, solvent), high temperature above 120°C, aggressive process media where elastomer chemical compatibility is insufficient. | Standard water service where EPDM is adequate — PTFE has higher crack pressure, higher cost, and is unnecessary for clean water. |
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Dual Plate Wafer Check Valve (Non-Return Valve) |
| Design Standard | API 594 / ASME B16.34 |
| Size Range | DN50 (2 inch) to DN600 (24 inch) |
| Pressure Rating | PN10 / PN16 / Class 150 |
| End Connection | Wafer type (clamped between ANSI B16.5 / DIN / IS flanges) |
| Face-to-Face | API 594 / ISO 5752 Series 19 / MSS SP-144 |
| Body Material | SS304 (CF8) / SS316 (CF8M) |
| Disc Material | SS304 / SS316 (matching or upgraded per service) |
| Seat / Seal Material | EPDM / PTFE / Viton (FKM) — depending on service conditions |
| Spring Material | SS304 / SS316 (for assisted closing in vertical lines) |
| Testing Standard | API 598 / BS EN 12266 (Shell and Seat Leakage Test) |
| Installation Orientation | Horizontal or Vertical (flow direction indicated by arrow on body) |
Industries and Applications
Water & Wastewater Treatment
Pump discharge protection, ETP/STP outlet lines. SS304 with EPDM seat is standard for clean water; SS316 with EPDM for treated/chemically dosed water.
HVAC Systems
Chilled water and condenser water pump discharge. Prevents reverse flow and water hammer. SS304 body with EPDM seat is the industry standard for commercial HVAC.
Chemical & Process Plants
Aggressive chemical service in Gujarat GIDC estates (Ankleshwar, Vapi, Dahej). SS316 body with PTFE seat is specified for acids, alkalis, and solvents to prevent corrosion and ensure zero leakage.
Pharmaceutical & Food
SS316 (CF8M) body for utility piping, DM water, purified water (PW), and cooling circuits. MTC and surface finish certificates available for GMP compliance.
Power Plants
Cooling water circulation and auxiliary systems. Large bore SS316 wafer check valves prevent reverse flow during pump trip, protecting expensive pumping equipment.
EPC & Infrastructure
Bulk project supply for government water supply tenders, industrial estate water distribution, and sewage treatment schemes. Complete BOM supply with API 598 test certificates.
Why EPC Contractors Choose Krishna Industries
B2B Supplier Since 2017
Sourcing from verified Indian manufacturers with consistent quality and competitive bulk pricing. Direct factory-to-project supply chain.
Bulk Supply Capability
Project BOM supply from 10 Nos to 5000+ Nos across sizes and types. Selected common sizes in ready stock for fast dispatch.
GST Compliant Billing
100% GST invoice with E-Way bill for every shipment. GSTIN: 24AKLPP6499B1ZT. Proper documentation for project accounting.
PAN India Dispatch
Dispatching from Ahmedabad warehouse via VRL, Professional Courier, and reliable logistics partners to all Indian states.
Test Certificates Available
API 598 hydrostatic test certificates, MTC, and third-party inspection coordination (TUV / BV / Lloyd’s) on request.
2-Hour Quote Response
WhatsApp your BOM — body material, seat material, size, quantity — and receive pricing within 2 hours (Mon-Sat, 9 AM-7 PM IST).
Supply Coverage — PAN India
Krishna Industries dispatches wafer check valves from our Ahmedabad warehouse to all major industrial cities across India. We serve contractors, purchase managers, and MRO traders in: Mumbai, Pune, Nashik, Nagpur (Maharashtra); Chennai, Coimbatore, Bengaluru, Hyderabad, Visakhapatnam (South India); Delhi, Noida, Gurugram, Faridabad (NCR); Kolkata (East India); Jaipur, Indore, Lucknow, Kanpur (Central/North India); Surat, Vadodara, Rajkot, Bhavnagar (Gujarat); and all other states. Typical transit time is 2-7 working days after dispatch.
Commercial Information
Order & Supply Details
MOQ10 Nos per size per type
Payment TermsAs per mutual agreement
Dispatch5–10 working days (standard SS sizes DN50–DN200)
InvoicingGST invoice with E-Way bill (GSTIN: 24AKLPP6499B1ZT)
DocumentationMTC, API 598 test certificate, hydro test report
InspectionThird-party inspection (TPI) coordination — TUV / BV / Lloyd’s
Bulk Orders20–5000+ Nos with project pricing for EPC and tenders
HSN Code84813000
Need Bulk Pricing for Your EPC Project or Stock Order?
Share your body material, seat type, size list, quantity, and delivery location. We respond within 2 hours on WhatsApp.
WhatsApp for Bulk PriceRelated Products
Frequently Asked Questions
1. What is the difference between SS304 and SS316 wafer check valves?
SS304 (CF8) is suitable for potable water, mild chemicals, and HVAC applications where chloride levels are low. SS316 (CF8M) contains molybdenum, providing superior resistance to pitting and crevice corrosion, making it the mandatory choice for seawater, chloride-rich environments, aggressive chemical processing, and pharmaceutical GMP lines.
2. When should I choose PTFE over EPDM for a check valve seat?
Choose EPDM for water, HVAC, and mild chemical services up to 120°C. Choose PTFE for aggressive chemical service (acids, alkalis, solvents), high-temperature applications up to 180°C, or when the process fluid is incompatible with elastomers. PTFE provides universal chemical resistance but has a higher operating crack pressure.
3. What is the face-to-face dimension standard for wafer check valves?
Wafer dual plate check valves supplied by Krishna Industries conform to API 594 and ISO 5752 Series 19 (or MSS SP-144) face-to-face dimensions. This ultra-compact design allows installation between standard ANSI B16.5, DIN PN10/PN16, and IS 1538 flanges without requiring additional pipeline spacing.
4. Do you supply wafer check valves for EPC and government tenders?
Yes. Krishna Industries supplies wafer check valves for municipal water, ETP/STP, chemical, and industrial EPC contracts across India. We provide GST invoices (GSTIN: 24AKLPP6499B1ZT), API 598 hydrostatic test certificates, MTC, and third-party inspection coordination (TUV / BV / Lloyd’s) for complete QA compliance.
5. What is the MOQ and delivery time from Ahmedabad?
MOQ is 10 Nos per size per type. Standard SS304/SS316 wafer check valves (DN50–DN200) typically dispatch within 5-10 working days. Larger sizes (DN250–DN600) or special PTFE-seated configurations require 10-21 working days. PAN India transit is typically 2-5 working days via VRL or Professional Courier.
Need a Quote for Wafer Check Valves?
API 598 tested · MTC included · GST invoice · Pan India dispatch from Ahmedabad · MOQ 10 Nos
- SS304 / SS316 Body
- EPDM / PTFE / Viton Seat
- Dual Plate Wafer Design
- DN50 to DN600
- 5–10 Day Dispatch