Hand Operated Butterfly Valve | Lever Handle | CI SS304 SS316 | PN10 PN16 | Wafer Lug | Supplier India

Description

Hand Operated Butterfly Valve Supplier India | Lever Handle | CI / SS304 / SS316 | PN10 / PN16 | Wafer & Lug | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Operation: Lever Handle (Quarter Turn Manual)
Standard: EN 593 / BS 5155 / API 609 | Sizes: DN50–DN200 (lever)

Hand Operated Butterfly Valve Supplier in India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, is a B2B supplier of Hand Operated Butterfly Valves — lever handle, quarter-turn manual operation — Cast Iron (CI), Ductile Iron (DI), SS304, SS316 body — SS304, SS316, nickel-plated DI disc — EPDM, NBR, PTFE, and Viton seat — wafer and lug type — PN10 and PN16 — DN50 to DN200 — notched lever with 10 lock positions — EN 593 / BS 5155 / API 609 — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.

The hand operated butterfly valve — also called lever butterfly valve or manual butterfly valve — is the simplest and most economical butterfly valve configuration: a quarter-turn lever handle attached directly to the valve stem, opening and closing the disc in 90° of rotation. No gearbox, no actuator, no external power — the operator rotates the lever by hand and the valve responds instantly. The lever notch positions allow the valve to be held at approximate intermediate positions for basic flow throttling in water supply, irrigation, and cooling water applications.

Lever Handle vs Gear Operated vs Actuated — Which to Specify

Size threshold rule for Indian installations: Specify lever handle up to DN150 without hesitation. DN200 lever is acceptable for PN10 clean water service — check torque with Krishna Industries. Above DN200, or at PN16 with viscous or high-pressure media, specify gear operated to protect the operator and ensure reliable operation. A lever butterfly valve that is too large to operate comfortably becomes a safety issue and is frequently left in a partially open position by operators who cannot fully close it.

Lever Types — Bare Lever vs Notched Lever vs Infinite Lock

Standard supply: Notched lever (10-position quadrant) is the standard specification unless otherwise requested. If bare lever or infinite lock is required, specify in your RFQ.

Technical Specifications

Material Selection Guide

Applications in Indian Industries

• Municipal water supply and distribution — CI SS304 EPDM, PN10, DN80 to DN200 — lever butterfly valve is the standard isolation valve for Indian municipal water pipelines and overhead tank systems
• HVAC chilled water and condenser water — CI SS304 EPDM, PN16 — AHU branch isolation, cooling tower distribution headers, chiller plant interconnections
• Fire hydrant and sprinkler systems — CI SS304 EPDM, PN16 — UL/FM listed variants available on request for fire protection systems
• Agricultural irrigation — CI SS304 EPDM, PN10 — drip and sprinkler irrigation mains, zone isolation valves on distribution headers
• Industrial cooling water — CI SS304 EPDM or NBR — heat exchanger inlet/outlet isolation, cooling tower distribution
• ETP and STP — CI SS304 EPDM, DN80 to DN200 — inlet and outlet isolation, sludge recirculation (check media compatibility — heavy sludge may require knife gate valve)
• Food and beverage — SS316 SS316 PTFE — hygienic butterfly valve for juice, dairy, and beverage process lines — CIP compatible
• Chemical process (mild media) — SS316 SS316 PTFE or Viton — dilute acid, alkali, and solvent service where CI body corrodes

Wafer vs Lug — Installation Guide

Wafer type: Thin body sandwiched between pipe flanges — through-bolts pass outside the valve body. Most economical and compact. Cannot be used at end-of-line — both pipe sides must be flanged. Standard for most Indian pipeline installations.

Lug type: Threaded inserts (lugs) cast into the body — bolts screw into valve lugs independently from each side. More expensive than wafer. Used when: (1) valve is at the end of a pipeline — one pipe side can be removed without disturbing the other, (2) dead-end service — one side blanked, (3) independent pipe support on each side is needed. Specify lug type for fire pump discharge headers, end-of-line tank isolation, and any installation where occasional single-side disassembly is required.

Related Products — Krishna Industries (KELOR)

• PN10 Butterfly Valve — detailed specs for CI body PN10 wafer and lug type butterfly valve
• PN16 Butterfly Valve — PN16 rated butterfly valve for higher pressure service
• Lug Type Butterfly Valve — full specifications for lug body end-of-line installation
• Gear Operated Butterfly Valve — for DN200 and above where lever handle torque is excessive
• PTFE Muffler Butterfly Valve — PTFE lined seat for chemical and aggressive media service

Frequently Asked Questions

1. What size butterfly valve can be lever operated?

Practically up to DN200 (8″) for PN10 clean water service. At DN150 and below, lever operation is comfortable for all media and pressure ratings. At DN200 in PN16 or with viscous media, verify torque — consider gear operated for operator comfort and reliable full closure. Above DN200, always specify gear operated.

2. What is a notched lever and why is it preferred?

A notched lever engages a quadrant plate with typically 10 fixed positions — 0°, 10°, 20° up to 90°. The lever clicks into each notch and stays there until intentionally moved. This prevents accidental movement from vibration or contact, allows approximate throttling at intermediate positions, and confirms the valve position visually. It is the standard specification for all Indian industrial installations — bare lever (no notches) is only for on/off applications where throttling is never needed.

3. Can a hand operated butterfly valve be upgraded to gear operated later?

Yes — butterfly valves are designed with a standard ISO 5211 actuator mounting pad on the stem. A lever handle can be replaced with a gearbox or pneumatic actuator at any time without removing the valve from the pipeline. This is a common upgrade path when a process is automated after initial manual operation. Confirm ISO 5211 mounting compatibility when ordering if future actuation is planned.

4. Which seat is best for drinking water?

EPDM seat is the standard for potable water — WRAS approved EPDM is available on request for drinking water distribution systems. NSF/ANSI 61 certified variants for potable water contact can be specified for municipal supply projects. Standard EPDM (non-WRAS) is acceptable for non-potable water, irrigation, HVAC, and fire fighting service.

5. Is it suitable for steam?

Standard resilient-seated butterfly valves (EPDM, NBR, PTFE seat) are not suitable for steam above 120°C — the rubber seat liner degrades in steam heat. For steam service, specify a metal-seated high-performance butterfly valve or a globe valve. The PTFE Muffler Butterfly Valve is suitable for some steam applications up to 180°C — see that page for details.

6. What is the MOQ?

MOQ is 10 Nos. Standard CI SS304 EPDM wafer type DN50 to DN150 available from stock — 3 to 5 working days dispatch. SS316 body and larger sizes DN200 — 5 to 7 working days subject to stock. WhatsApp size, body material, seat material, and quantity for immediate pricing.

Conclusion

The Hand Operated Butterfly Valve supplied by Krishna Industries (KELOR) is the economical manual isolation and throttling valve for Indian water supply, HVAC, fire fighting, irrigation, cooling water, ETP, food, and chemical process applications — CI, DI, SS304, SS316 body — SS304, SS316 disc — EPDM, NBR, PTFE, Viton seat — wafer and lug type — PN10 and PN16 — DN50 to DN200 lever handle — notched 10-position quadrant standard — EN 593 / BS 5155 / API 609 — ISO 5211 actuator mounting — upgradeable to gear or actuated operation. GST invoice, Pan India dispatch from Ahmedabad. WhatsApp size, material, and quantity for bulk pricing within 2 hours.