WCB Knife Gate Valve | Slurry Pulp Wastewater | MSS SP-81 | Supplier India

Description

WCB Knife Gate Valve Supplier India | SS304 / SS316 | MSS SP-81 | Slurry Pulp Wastewater | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Sizes: 50mm–600mm | Standard: MSS SP-81 / ISO 5996
Media: Slurry, Pulp, Wastewater, Viscous Fluids, Solids-Laden Media

Introduction – Knife Gate Valve Supplier India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, India, is a trusted B2B supplier of Knife Gate Valves sourced from verified Indian manufacturers. We supply Knife Gate Valves in WCB (Carbon Steel), SS304, and SS316 body — thin sharp-edged gate design — EPDM, NBR, and Viton seats — sizes 50mm to 600mm — Class 150 / PN10 / PN16 — wafer type and lug type — handwheel, gear, pneumatic, and electric actuator operated — conforming to MSS SP-81 and ISO 5996.

A Knife Gate Valve is a fundamentally different valve from a standard gate valve. Its defining feature is a thin, sharp-edged flat gate that cuts cleanly through slurry, pulp, fibrous media, and suspended solids on closing — rather than wedging through the flow like a standard gate valve. This cutting action prevents fibrous or solid material from being trapped in the seat, ensuring positive closure even in the most demanding solids-laden media found in Indian sewage treatment plants, effluent treatment plants, paper mills, sugar mills, cement plants, and mining operations.

Also referred to as: Knife Valve, Knife Edge Gate Valve, Slurry Gate Valve, Pulp Valve, Sluice Knife Gate Valve — used interchangeably across Indian project specifications and procurement documents.

Knife Gate Valve vs Standard Gate Valve — Critical Differences

This is the most important distinction for purchase managers and project engineers specifying isolation valves for slurry and wastewater service:

Rule: If your media contains suspended solids, fibres, pulp, or slurry — specify Knife Gate Valve. A standard gate valve will jam, fail to close fully, and have severely reduced seat life in these services.

Complete Material and Configuration Guide

Body Material Options

Gate (Blade) Material Options

Seat / Seal Options

Mounting Type Options

Technical Specifications

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Applications — Where Knife Gate Valve Is the Correct Choice

• Sewage treatment plants (STP) — raw sewage isolation, sludge lines, digester connections — EPDM seat WCB body
• Effluent treatment plants (ETP) — effluent isolation, chemical dosing lines, sludge transfer
• Paper and pulp mills — wood pulp slurry, black liquor, white water isolation — SS316 for corrosion resistance
• Sugar mills — bagasse slurry, juice lines, molasses transfer — EPDM / NBR seat
• Mining operations — ore slurry, tailings, mine water — hardened gate for abrasive service
• Cement plants — cement slurry, fly ash conveying lines, wet process lines
• Food processing — fruit pulp, starch slurry, food-grade viscous media — SS316 body
• Chemical plants — chemical slurry, catalyst lines, viscous chemical transfer — Viton seat
• Power plants — fly ash slurry, bottom ash handling, ash pond isolation
• Fertiliser plants — slurry and viscous chemical transfer lines
• Municipal wastewater — pump station isolation, screening chamber, lift station service

EPC Contractors — Bulk Supply

• Bulk supply from MOQ 10 Nos — WCB, SS304, SS316 in single consolidated order
• Material Test Certificates (MTC) for body and gate material
• Hydrostatic and seat leakage test certificates per MSS SP-81
• GST invoices — GSTIN: 24AKLPP6499B1ZT
• Fast dispatch from Ahmedabad — 3 to 7 working days standard configurations
• Pneumatic and electric actuator packages available — specify fail-open / fail-close
• Consolidated supply with gate valves, butterfly valves, check valves, Y strainers in single order

PAN India Supply Coverage

Maharashtra — Mumbai, Pune, Navi Mumbai, Nashik, Aurangabad, Nagpur
Gujarat — Ahmedabad, Surat, Vadodara, Rajkot, Bharuch, Ankleshwar, Vapi, Dahej
Rajasthan — Jaipur, Jodhpur, Udaipur, Kota, Bhilwara
Delhi NCR — Delhi, Noida, Gurgaon, Faridabad, Ghaziabad
Tamil Nadu — Chennai, Coimbatore, Madurai, Tirupur, Salem
Karnataka — Bangalore, Hubli, Mysore, Belgaum, Mangalore
Telangana and Andhra Pradesh — Hyderabad, Vizag, Vijayawada, Kakinada
Madhya Pradesh — Indore, Bhopal, Jabalpur, Pithampur
Punjab and Haryana — Ludhiana, Amritsar, Chandigarh, Panipat
West Bengal — Kolkata, Durgapur, Asansol, Haldia
Odisha, Jharkhand, Chhattisgarh — all industrial zones including mining belts

Export FOB Mundra / JNPT. IEC registered — IEC: AKLPP6499B.

Related Products from Krishna Industries

• Gate Valve (API 600 / IS 1218) — standard gate valve for clean service — oil, gas, water
• Cast Iron Gate Valve (IS 14846) — resilient seated gate valve for municipal water
• Dual Plate Check Valve — non-return valve for pump discharge on slurry lines
• Y Strainer Valve — pipeline protection for clean service lines
• PN10 / PN16 Butterfly Valve — isolation for large bore low pressure lines
• Lug Type Butterfly Valve — end-of-line isolation valve

Frequently Asked Questions

1. What is a knife gate valve?

A knife gate valve has a thin, sharp-edged flat gate that cuts through slurry, pulp, fibrous media, and suspended solids on closing. Designed specifically for media that would jam or trap in a standard gate valve — wastewater, sewage sludge, pulp, mining slurry, cement slurry. The thin gate and absence of a bottom pocket prevent solids from accumulating in the valve body.

2. Why use knife gate valve instead of standard gate valve for slurry?

A standard wedge gate valve has a thick wedge and body pocket — fibrous material and solids pack into the seat and prevent full closure. The knife gate’s sharp thin blade cuts through fibres and solids cleanly, ensuring positive closure every time. Using a standard gate valve on slurry or pulp service causes rapid seat damage, jamming, and valve failure.

3. Which body material for STP and ETP service?

WCB (Carbon Steel) body with EPDM seat is the standard and most economical choice for sewage treatment plant and effluent treatment plant service in India. SS316 body for aggressive chemical effluent or coastal STP where higher corrosion resistance is needed.

4. Which seat material for chemical plant slurry?

Viton (FKM) seat for chemical plant slurry with solvent, acid, or aggressive chemical content. EPDM for general wastewater and municipal sewage. NBR for oily wastewater and petroleum-based slurry.

5. What is MSS SP-81?

MSS SP-81 is the Manufacturers Standardization Society standard for stainless steel, bonnetless, flanged, wafer, knife gate valves — the primary design standard for knife gate valves. Covers dimensional requirements, materials, testing, and marking. Widely referenced in Indian STP, ETP, paper mill, and mining project specifications.

6. Can knife gate valve be actuated?

Yes — pneumatic cylinder actuators (single and double acting) and electric actuators are available for knife gate valves. Specify fail-open or fail-close for pneumatic actuators based on your process safety requirement.

7. What sizes are available?

50mm to 600mm standard. Larger sizes up to 1200mm available on project basis — knife gate valves are commonly used at large bore in paper mills and mining.

8. Wafer type or lug type — which to choose?

Wafer type for standard in-line service where both pipeline sides remain connected. Lug type for end-of-line or when one side of the pipeline may be removed for maintenance without disturbing the other side.

9. What test certificates are provided?

Material Test Certificate (MTC) for body and gate material, hydrostatic shell test, seat leakage test per MSS SP-81 / API 598.

10. What is the MOQ?

MOQ is 10 Nos. Bulk project quantities welcome with project-rate pricing.

11. Can knife gate valves handle high pressure?

Knife gate valves are rated typically PN10 / PN16 / Class 150 — low to medium pressure. They are not designed for high pressure service. For high pressure slurry or process isolation, consult Krishna Industries for appropriate valve selection.

12. Can I order knife gate valves with other valves in one order?

Yes — Krishna Industries supplies knife gate valves with standard gate valves, butterfly valves, check valves, Y strainers, flanges, and fittings in consolidated single orders — single GST invoice, single dispatch.

Conclusion

The WCB Knife Gate Valve supplied by Krishna Industries (KELOR) is the correct isolation valve for slurry, pulp, wastewater, and solids-laden media service — WCB, SS304, SS316 body — SS304 / SS316 gate — EPDM, NBR, Viton seat — wafer and lug type — sizes 50mm to 600mm — PN10 / PN16 / Class 150 — MSS SP-81 / ISO 5996 — handwheel, gear, pneumatic, and electric actuator operated. Sourced from verified Indian manufacturers with MTC, hydrostatic test certificates, and GST documentation. Fast PAN India dispatch from Ahmedabad.

For STP / ETP project contractors, paper mill and mining purchase managers, EPC teams, and MRO buyers — contact Krishna Industries (KELOR), your trusted Knife Gate Valve supplier in Ahmedabad, Gujarat, India. WhatsApp your size, body material, seat, operation type, and quantity for bulk pricing within 2 hours.