Email:
[email protected]
Phone:
+91 93135 43530
Address:
133/1 Ground, Mansuri Block, Opp. Dudheshwar Water Tank, Ahmedabad-380004, Gujarat, India
Electric Knife Gate Valve supplier in Ahmedabad, Gujarat. CI (Cast Iron) / DI (Ductile Iron) / WCB (Carbon Steel) / SS304 (CF8) / SS316 (CF8M) body — SS304/SS316 gate — EPDM / NBR / PTFE seat — multi-turn electric actuator…
Electric Knife Gate Valve Supplier India | CI DI WCB SS304 SS316 | On/Off Modulating 4-20mA | 230V 415V 24V DC | IP65 IP67 ATEX | DN50–DN600 | KELOR
Price on Request
About Company
- KRISHNA INDUSTRIES
- GST No. : 24AKLPP6499B1ZT
- Ahmedabad, Gujarat, India
- Manufacturer, Traders & Wholesale Supplier
- Year of Establishment : Since 1985
- Annual Turnover : Below Rs. 25 Crore Approx.
- Banker : APANI SAHAKARI BANK LIMITED
- Company CEO : Ruchin Panchal
- Constitution of Business : Proprietorship
- Leading Valve Supplier in India covering Maharashtra, Gujarat, Tamil Nadu, Karnataka, Telangana, Delhi NCR, West Bengal, Rajasthan, Madhya Pradesh, Uttar Pradesh, Punjab, Haryana, Andhra Pradesh, Odisha, Chhattisgarh, Jharkhand, Bihar, Kerala, Assam.
- Major Industrial Supply Cities: Ahmedabad, Vadodara, Rajkot, Surat, Mumbai, Pune, Thane, Nashik, Nagpur, Chennai, Coimbatore, Bengaluru, Hyderabad, Delhi, Noida, Gurugram, Faridabad, Kolkata, Jaipur, Indore, Bhopal, Lucknow, Kanpur, Ludhiana, Visakhapatnam.
Description
Electric Knife Gate Valve Supplier India | CI / DI / WCB / SS304 / SS316 | On/Off & Modulating 4-20mA | 230V / 415V / 24V DC | IP65 / IP67 / ATEX | DN50–DN600 | ETP / Mining / Cement / Power Plant | KELOR
Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Body: CI / DI / WCB / SS304 / SS316
Control: On/Off & Modulating 4-20mA | Voltage: 230V / 415V / 24V DC | Sizes: DN50–DN600
Electric Knife Gate Valve Supplier in India
Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies Electric Knife Gate Valves — CI / DI / WCB / SS304 (CF8) / SS316 (CF8M) body — SS304/SS316 gate — EPDM / NBR / PTFE seat — multi-turn electric actuator — on/off and modulating 4-20mA control — 230V AC single phase / 415V AC three phase / 24V DC — IP65 / IP67 / ATEX flameproof — manual override handwheel standard — DN50 (2″) to DN600 (24″) — PN10 / PN16 — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.
An electric knife gate valve combines the sharp-edged gate mechanism that cuts through slurry, fibrous pulp, and semi-solid media with a multi-turn electric actuator for remote, automated, and DCS/SCADA-integrated operation. Therefore, it eliminates the need for instrument air infrastructure at remote or unmanned locations. Furthermore, modulating 4-20mA versions provide variable gate positioning for slurry flow control — not possible with standard pneumatic on/off actuators.
Electric vs Pneumatic Knife Gate Valve — When to Specify Each
The actuator type is the first decision when specifying an automated knife gate valve. Both electric and pneumatic options are available. However, each has specific site infrastructure requirements and performance characteristics that determine the correct choice for a given application.
| Factor | Electric Actuated Knife Gate Valve | Pneumatic Actuated Knife Gate Valve |
|---|---|---|
| Power / Utilities Required | ✅ Electrical power only — 230V AC / 415V AC / 24V DC — no compressed air needed | Instrument air (4–6 bar clean dry air) — FRL unit required at valve — compressor and air distribution piping needed |
| Remote / Unmanned Locations | ✅ Correct for remote pump stations, unmanned municipal water board installations, mining remote sites — where compressed air infrastructure is absent | Requires air compressor at location or long air distribution piping from central compressor — impractical for very remote locations |
| Stroke Speed | Slower — typically 30 seconds to 5 minutes for full open/close stroke depending on valve size and actuator torque — acceptable for ETP/STP sludge isolation and mining slurry control where cycle time is minutes | ✅ Fast — 2–15 seconds for full stroke — correct for emergency isolation, surge control, quick process response |
| Modulating Control (Variable Position) | ✅ Modulating versions available — 4-20mA input signal positions gate at any point 0–100% — 4-20mA position transmitter sends actual position back to DCS — simple closed-loop position control | Modulating pneumatic requires separate I/P converter and positioner — more components, more maintenance — electric modulating is simpler for variable positioning |
| Fail-Safe Position on Power/Air Failure | Standard electric: holds last position on power failure — spring-return electric or UPS backup required for fail-safe open or fail-safe closed — additional cost | ✅ Spring return (fail-safe) standard — valve moves to defined safe position (open or closed) on air failure — inherent fail-safe without additional components — correct for safety-critical ETP overflow protection, emergency isolation |
| Hazardous Area (ATEX) | ATEX electric actuator available — significantly higher cost — specify only where area classification confirms Zone 1 or Zone 2 | ✅ Pneumatic inherently safe (no electrical spark) — correct for Zone 1 hazardous areas at lower cost than ATEX electric |
| DCS/SCADA Integration | ✅ Natural integration — 4-20mA analog I/O and digital I/O connect directly to DCS — no pneumatic solenoid in signal chain — simpler wiring architecture | Requires solenoid valve in air line for DCS signal — additional component in signal chain |
| Specify Electric When | ✅ No instrument air available — modulating control required — remote/unmanned location — SCADA integration without solenoid valves — slow cycle time acceptable | Fast stroke required — inherent fail-safe mandatory — instrument air already available — ATEX Zone 1 without budget for ATEX electric — standard ETP/STP automated isolation |
Actuator Specification Checklist — For Control / Instrument Engineers
Before ordering, confirm these eight parameters with the supplier. Missing any one of them results in an actuator that cannot be commissioned without modification or replacement on site.
| Parameter | Options Available | How to Specify |
|---|---|---|
| 1. Supply Voltage | 230V AC single phase / 415V AC three phase / 24V DC | Match to available power supply at valve location — 415V three phase for large actuators DN200+ — 230V single phase or 24V DC for small actuators and PLC-powered systems |
| 2. Control Mode | On/Off (open/close only) / Modulating (4-20mA variable position) | On/off for isolation service (fully open or fully closed only) — modulating for variable gate positioning and flow control applications |
| 3. Control Signal | On/off: 24V DC digital or 230V AC on/off from DCS — Modulating: 4-20mA from DCS analog output | Match to DCS/PLC output card type — confirm with control system supplier |
| 4. Position Feedback Signal | On/off: open and close limit switches (digital) — Modulating: 4-20mA position transmitter (analog) | Limit switch signals connect to DCS digital input — position transmitter connects to DCS analog input — confirm I/O point availability in DCS |
| 5. IP Protection Rating | Standard (indoor) / IP65 (outdoor, rain, dust) / IP67 (wet/flood) / ATEX flameproof (hazardous area) | IP65 for standard outdoor Indian industrial installations — IP67 for valve pits or monsoon-flood-risk locations — ATEX only for confirmed Zone 1 or Zone 2 classified areas |
| 6. Fail-Safe Requirement | Last position (standard) / Fail-safe open / Fail-safe closed (spring return or UPS backup) | Standard electric holds last position on power failure — if safety requires specific fail-safe position, specify spring-return electric actuator or UPS — confirm safety requirement before order |
| 7. Manual Override | Handwheel (standard on all electric knife gate actuators) | Manual handwheel is standard — allows valve operation during power failure or actuator maintenance — confirm handwheel is accessible at installed height |
| 8. Actuator Torque | Depends on valve size, pressure, and media | Knife gate valve torque in slurry service is higher than clean fluid — provide valve size, pressure rating, and media details — actuator torque must exceed valve maximum breakaway torque including safety margin |
IP Rating Selection Guide — Indian Industrial Conditions
| IP Rating | Protection Level | Specify For |
|---|---|---|
| Standard (IP54) | Dust resistant + splash water resistant | Indoor installations — enclosed pump rooms, covered valve galleries — where actuator is protected from direct rain and heavy dust |
| IP65 | Dust-tight + water jet resistant (no ingress) | ✅ Standard for Indian outdoor industrial installations — open-air ETP/STP, outdoor pump stations, uncovered valve installations — adequate for rain, dust, and water hosing during plant cleaning — most common IP rating specified for electric knife gate actuators in India |
| IP67 | Dust-tight + submersible to 1m for 30 minutes | ✅ Valve pits that may flood during monsoon — underground chambers — low-lying ETP/STP locations in flood-risk areas — mining sumps — any location where standing water around actuator is possible seasonally |
| ATEX / Flameproof (Ex d IIC T4 Gb) |
Explosion-proof — no ignition of surrounding flammable atmosphere | ✅ Chemical plant with hydrocarbon vapour — petroleum refinery — solvent handling area — any location with a confirmed ATEX Zone 1 or Zone 2 area classification in the hazardous area drawing. Note: PESO certification required for ATEX equipment in India. Significantly higher cost — specify only where area classification is confirmed. |
Technical Specifications
| Parameter | Specification |
|---|---|
| Valve Type | Electric actuated knife gate valve — rising stem — single or double gate |
| Body Material | CI IS 210 / DI ASTM A536 / WCB ASTM A216 / CF8 SS304 / CF8M SS316 (ASTM A351) |
| Gate Material | SS304 (standard) / SS316 / Hardox 400 (extreme abrasion on request) |
| Seat Material | EPDM (water/sewage standard) / NBR (oil service) / PTFE (chemical service) |
| Actuator Type | Multi-turn electric actuator — linear output via rising stem |
| Voltage | 230V AC single phase / 415V AC three phase / 24V DC — specify at order |
| Control Mode | On/Off (limit switches + digital I/O) / Modulating 4-20mA (positioner + position transmitter) |
| Position Feedback | Open/close limit switches (on/off) / 4-20mA position transmitter (modulating) |
| IP Rating | Standard / IP65 / IP67 / ATEX flameproof (Ex d IIC T4) — specify at order |
| Fail-Safe | Last position (standard) / Spring return or UPS fail-safe on request |
| Manual Override | Handwheel — standard on all units |
| Stroke Time | Approximately 30 seconds to 5 minutes — depends on valve size and actuator torque rating |
| Size Range | DN50 (2″) to DN600 (24″) |
| Pressure Rating | PN10 / PN16 |
| End Connection | Wafer type (standard) / Flanged |
| Testing | Hydrostatic shell test / Seat leakage test / Actuator functional test |
| MOQ | 10 Nos |
| HSN Code | 84818090 |
Applications in Indian Industries
ETP and STP — Sludge Isolation and Process Control
CI or DI body IP65 electric actuated knife gate valve DN80–DN300. Sludge line isolation, raw sewage inlet control, dewatering press feed. On/off control from PLC panel. 230V AC single phase or 415V AC three phase. Consequently, this is one of the most common electric knife gate valve applications in Indian municipal and industrial ETP/STP projects. No instrument air required — suits unmanned STP locations.
Mining and Mineral Processing
WCB or DI body IP65 or IP67 electric actuated DN150–DN400. Mineral tailings slurry, iron ore concentrate, coal slurry discharge. Remote SCADA operation from surface control room for underground or remote mine slurry pump stations. Furthermore, IP67 rating protects actuator in wet mining sumps during monsoon. Hardox gate for severe abrasion on request.
Cement Plants
CI or WCB body IP65 electric actuated DN100–DN300. Cement slurry, fly ash slurry, raw meal slurry. DCS integration for kiln feed flow control. Modulating 4-20mA version for variable slurry feed rate control on cement raw material preparation. Additionally, on/off version for fly ash silo discharge isolation.
Power Plant Ash Handling
WCB or DI body IP65 electric actuated DN200–DN600. Bottom ash slurry discharge, fly ash pond feed, HDPE-lined ash slurry pipeline isolation. 415V AC three phase for large actuators at DN300+. Moreover, DCS-integrated on/off control for automated ash handling cycle management.
Municipal Water Board Projects
CI or DI body IP65 electric actuated DN100–DN300. Raw water inlet control, filter backwash control, sludge blanket level control in clarifiers. 230V AC on/off with PLC integration. Therefore, this eliminates manual operation at unmanned water treatment installations. SCADA remote monitoring via 4-20mA position feedback.
Related Products — Krishna Industries (KELOR)
- Knife Gate Valve — Hub Page — complete range overview including manual handwheel, pneumatic, and electric actuated — CI/DI/WCB/SS body — all applications
- WCB Knife Gate Valve — Manual — manual handwheel operated CS body knife gate — for locations where automation is not required
- Dual Plate Check Valve — install on slurry pump discharge downstream of electric knife gate valve — prevents backflow when pump trips
- Flanged Swing Check Valve — large bore NRV for slurry pump discharge — in the same pump station piping where electric knife gate provides inlet isolation
- Y Strainer — upstream pipeline protection on clean fluid lines — not recommended upstream of knife gate valve on slurry lines (strainer will clog rapidly in slurry service)
Frequently Asked Questions
1. When should I specify electric instead of pneumatic actuation for a knife gate valve?
Specify electric when compressed air is not available at the valve location. This is common at remote municipal pump stations, unmanned mining slurry pump houses, and outlying ETP/STP installations. In addition, specify electric when modulating 4-20mA control is required — standard pneumatic on/off cannot position the gate at intermediate positions without additional I/P converter and positioner. Finally, specify electric when DCS integration without pneumatic solenoid valves in the signal chain is preferred for simpler wiring architecture.
2. What is the stroke time for an electric knife gate valve?
Stroke time depends on valve size and actuator torque rating. Typically, DN50–DN100 electric knife gate valves complete a full open-to-close stroke in 30–90 seconds. DN150–DN300 valves take 1–3 minutes. DN400+ may take 3–5 minutes. This is significantly slower than pneumatic actuation (2–15 seconds). Therefore, electric actuation is not suitable for applications requiring rapid stroke — emergency isolation valves or surge control. For ETP/STP sludge isolation and mining slurry control where cycle times are measured in minutes, stroke time is not a limiting factor.
3. What IP rating should I specify for outdoor Indian conditions?
Specify IP65 as the standard for outdoor installations in India — it provides dust-tight and water jet protection adequate for rain, dust, and plant cleaning hosedown. However, for valve pits or underground chambers that may flood during monsoon season, specify IP67. This provides submersibility to 1m depth. For chemical plant or refinery locations with a confirmed ATEX Zone 1 or Zone 2 hazardous area classification, specify ATEX flameproof actuator with PESO certification. Do not apply ATEX specification where area classification has not been formally confirmed — ATEX actuators cost significantly more and the premium is only justified where explosion risk is confirmed.
4. What happens to the valve position on power failure?
A standard electric actuator holds its last position on power failure — the valve stays wherever it was when power was lost. If a specific fail-safe position (fully open or fully closed) is required on power failure, specify a spring-return electric actuator or provide a UPS (uninterruptible power supply) to drive the actuator to the required position before power is completely lost. For safety-critical applications such as ETP overflow prevention or emergency chemical isolation, always define the required fail-safe position and specify accordingly. Standard last-position behaviour is acceptable for most ETP/STP sludge isolation and mining slurry control applications where power failure leaves the valve in a safe state.
5. What is the MOQ?
MOQ is 10 Nos. Project orders — 10 to 200+ Nos — with hydrostatic test certificate, actuator functional test report, MTC for body material, and GST invoice. Confirm voltage, control mode, IP rating, and position feedback requirements at order stage. WhatsApp body material, valve size, pressure rating, voltage, control mode (on/off or modulating), IP rating, and quantity for project pricing within 2 hours.
Conclusion
Krishna Industries (KELOR) supplies Electric Knife Gate Valves for ETP/STP sludge isolation, mining slurry control, cement plant automation, power plant ash handling, and municipal water board DCS/SCADA integrated systems.
We supply CI / DI / WCB / SS304 / SS316 body — SS304/SS316 gate — EPDM / NBR / PTFE seat — on/off and modulating 4-20mA control — 230V AC / 415V AC / 24V DC — IP65 / IP67 / ATEX flameproof — manual override handwheel standard — DN50 to DN600 — PN10 / PN16. GST invoice, MTC, actuator functional test report — Pan India dispatch from Ahmedabad. WhatsApp valve size, body material, voltage, control mode, and quantity for pricing within 2 hours.
Be the first to review “Electric Knife Gate Valve Supplier India | CI DI WCB SS304 SS316 | On/Off Modulating 4-20mA | 230V 415V 24V DC | IP65 IP67 ATEX | DN50–DN600 | KELOR”
Related products
-
Spring Loaded Wafer Check Valve | Silent Nozzle Poppet NRV | SS304 SS316 WCB CI | Supplier India
Price on Request -
Water Wafer Check Valves, Material Grade: ss316, Size: 25mm To 300mm
Price on Request -
STAINLEES, CAST IRON Wafer Check Valve, Valve Size: More than 24 inch, Material Grade: Wcb
Price on Request -
M.s Wafer Type Check Valve – Cast Iron Non Return Valve – Flap Type 40mm To 300mm
Price on Request -
Check Valves, For Industrial, Valve Size: 15 mm To 300mm
Price on Request -
100 mm To 400 mm Manual Butterfly Valve For Cement
Price on Request -
Teflon Lined Butterfly Valve | PTFE Seat | CI & WCB Body | SS316 Disc | Class 150 | Chemical Plant Supplier India
Price on Request -
Single Plate Stainless Steel Wafer Check Valve, 2″/4″/6″/10″
Price on Request
Reviews
There are no reviews yet.