SS Knife Edge Gate Valve | SS304 SS316 | Wafer Lug Flanged | Slurry Chemical Pharma | Supplier India

Description

SS Knife Edge Gate Valve Supplier India | SS304 SS316 | Wafer Lug Flanged | Slurry Chemical Pharma | API 6D | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Body: SS304 (CF8) / SS316 (CF8M) | Standard: API 6D / BS EN 13397
Sizes: DN40–DN600 | Rating: PN10 / PN16 / PN25 / Class 150

SS Knife Edge Gate Valve Supplier in India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, is a B2B supplier of Stainless Steel Knife Edge Gate Valves — SS304 (CF8) and SS316 (CF8M) body — SS316 gate/disc — wafer, lug, and flanged end connections — PN10, PN16, PN25, and ANSI Class 150 — DN40 to DN600 — EPDM, NBR, PTFE, and FKM seat — PTFE and graphite gland packing — manual, gear operated, pneumatic, and electric actuated — API 6D / BS EN 13397 — bidirectional flow — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.

The knife edge gate valve — also called knife gate valve, slurry gate valve, or thin gate valve — uses a thin stainless steel gate with a sharpened bottom edge that cuts through fibrous, viscous, and slurry media on closing. This cutting action allows the valve to close tightly even when the pipeline contains pulp fibres, suspended solids, food product residue, or viscous chemical slurry that would jam a conventional gate valve disc. The stainless steel body (SS304 or SS316) is specified when the media or environment would corrode a carbon steel (WCB) body — chemical plants, pharmaceutical facilities, food and beverage processing, and aggressive slurry service.

SS vs WCB Knife Gate Valve — Which to Specify

Body Style Guide — Wafer vs Lug vs Flanged

Seat and Seal Material Guide

Technical Specifications

Knife Gate Valve vs Standard Gate Valve — When to Use Knife Gate

Applications in Indian Industries

• Chemical plants (Gujarat — Ankleshwar, Vapi, Dahej, Bharuch) — SS316 CF8M body PTFE seat — corrosive slurry isolation, acid transfer lines, chemical dosing tank outlets
• Pharmaceutical plants — SS316 CF8M PTFE gland — API intermediate slurry, solvent recovery, ETP lines — GMP compatible, smooth internal surfaces, no crevices
• Food and beverage processing — SS316 CF8M PTFE seat — tomato paste, fruit pulp, sugar syrup, starch slurry — FDA compliant, CIP cleanable
• Effluent treatment plants (ETP / STP) — SS316 EPDM seat — raw sewage, sludge isolation, activated sludge process — knife edge cuts through fibrous sludge content
• Pulp and paper industry — SS316 EPDM or PTFE — wood pulp slurry, black liquor, paper stock — fibrous media that jams conventional gate valves
• Textile industry (Surat, Ahmedabad) — SS316 EPDM — dye bath slurry, sizing starch, effluent with fibre content
• Mining and mineral processing — SS316 EPDM or NBR — mineral slurry, ore concentrate, coal slurry — abrasion-resistant SS316 gate
• Power plant ash handling — SS316 — fly ash slurry, bottom ash sluice — knife gate preferred over butterfly for ash slurry isolation
• Cement plants — SS304 or SS316 — cement slurry, fly ash handling

Actuator Options

Related Products — Krishna Industries (KELOR)

• WCB Knife Edge Gate Valve — carbon steel body for general industrial slurry, mining, effluent service at lower cost
• Knife Gate Valve — Manual Operation — manual handwheel knife gate valve specifications
• Y Strainer Valve — install upstream to protect downstream equipment from oversize particles
• WCB Globe Valve — for throttling and flow regulation in clean service lines

Frequently Asked Questions

1. What is the difference between SS knife gate valve and standard gate valve?

A standard gate valve has a thick wedge disc that seals against a machined seat — it works perfectly for clean fluids like water, steam, and oil. When the media contains suspended solids, fibres, or slurry, solids pack into the disc groove and prevent proper seating, causing leakage. The knife gate valve has a thin gate with a sharpened edge that cuts through the solid media on closing, producing a clean seal even in slurry and fibrous service.

2. Why SS316 instead of SS304 for chemical service?

SS316 contains 2–3% molybdenum which significantly improves resistance to chloride pitting corrosion and general acid attack. In chemical plants, pharmaceutical plants, and coastal locations where chlorides are present, SS304 can pit and corrode despite being “stainless.” SS316 (CF8M) is the standard specification for chemical process and pharmaceutical service. Use SS304 (CF8) for food and general water service where chloride levels are low.

3. Can a knife gate valve be used for throttling?

No — knife gate valves are on/off isolation valves only. Partially open position causes high-velocity flow past the gate edge, rapidly eroding the seat seal and gate. For flow control and throttling, specify a globe valve or butterfly valve with appropriate actuator and positioner.

4. What is bidirectional flow?

Bidirectional means the valve seals against pressure from either direction — flow can enter from either end and the valve will hold pressure. This is important in slurry service where backpressure can occur. Confirm bidirectional rating with Krishna Industries for your specific pressure class before ordering.

5. Wafer or lug type — which to specify?

Wafer type for standard in-line installation — most economical, easy to replace. Lug type when the valve is at the end of a pipeline and one side of the pipe needs to be disconnected without disturbing the valve, or when the pipeline on each side needs independent support. For most Indian process plant applications, wafer type is the correct specification.

6. What gland packing for pharmaceutical service?

PTFE gland packing — clean, non-contaminating, FDA compatible, chemical resistant. Graphite packing is used for high-temperature steam and thermic fluid service where PTFE would degrade. Specify PTFE packing in your RFQ for all pharma and food applications.

7. What is the MOQ?

MOQ is 10 Nos. Bulk project supply for ETP, STP, chemical plant, and pharmaceutical plant projects — 50 to 200+ Nos — with competitive bulk pricing and fast dispatch from Ahmedabad.

Conclusion

The SS Knife Edge Gate Valve supplied by Krishna Industries (KELOR) is the correct isolation valve for slurry, fibrous, viscous, and corrosive media service in Indian chemical plants, pharmaceutical facilities, food and beverage plants, ETP/STP, pulp and paper, textile, and mining applications — SS304 (CF8) and SS316 (CF8M) body — SS316 gate — EPDM, PTFE, and FKM seat — wafer, lug, and flanged — PN10 to PN25 / Class 150 — DN40 to DN600 — bidirectional — manual, gear, pneumatic, and electric actuated — API 6D / BS EN 13397 — API 598 tested. GST invoice, Pan India dispatch from Ahmedabad. WhatsApp size, body style, seat material, and quantity for bulk pricing within 2 hours.