2/2 Way Direct Acting Solenoid Valve Supplier India | KELOR

2/2 Way Direct Acting Solenoid Valve Supplier in India — Brass / SS / CI | KELOR

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies 2/2 Way Direct Acting Solenoid Valves — brass, stainless steel, and cast iron body — NBR, Viton, EPDM, PTFE seal options — 24V DC, 230V AC, 110V AC coil — 0 to 16 Bar pressure range — 1/4″ to 2″ — 100% ED continuous duty — water, air, oil, steam, and gas media — MOQ 10 Pcs — Pan India dispatch from Ahmedabad.

Mill Test Report 3.1 can be provided on request from verified vendors. Hydrostatic test certificates provided with every order. GST invoice with HSN 8481 80 90 for all solenoid valve dispatches.

? Quick Reference

SupplierKrishna Industries (KELOR) — Ahmedabad, Gujarat
Valve Type2/2 Way Direct Acting
Body MaterialBrass / Stainless Steel / Cast Iron
Seal MaterialNBR / Viton / EPDM / PTFE
Voltage Options24V DC / 230V AC / 110V AC
Pressure Range0 to 16 Bar
Size Range1/4″ to 2″ (DN8 to DN50)
MOQ10 Pieces per specification

2/2 Way Direct Acting Solenoid Valve — Overview

Krishna Industries (KELOR) supplies the 2/2 Way Direct Acting Solenoid Valve — an electromechanically operated ON–OFF valve that controls the flow of water, air, oil, steam, and gas in industrial piping and automation systems. The designation “2/2 way” refers to the valve having two ports (one inlet, one outlet) and two switching positions (open and closed). The term “direct acting” means the electromagnetic force generated by the coil directly lifts the plunger to open the valve seat — no minimum pressure differential is required for operation, making these valves suitable for zero-pressure-start applications, vacuum lines, and low-pressure systems where pilot operated valves cannot function.

KELOR supplies solenoid valves in three body materials to cover the full range of industrial service conditions. Brass body valves are the most economical choice for water, air, and general-purpose applications. Stainless steel body valves provide corrosion resistance for chemical, food-grade, and outdoor installations. Cast iron body valves are specified for steam, oil, and heavier industrial services requiring robust construction. Each valve is pressure-tested for leakage at the factory and supplied with the correct coil voltage as specified by the buyer. KELOR supports OEM, bulk, and export orders with consistent quality, GST-compliant documentation, and Pan India dispatch from the Ahmedabad warehouse.

How a Direct Acting Solenoid Valve Works

A direct acting solenoid valve uses the electromagnetic force generated by an energised coil to directly lift a plunger (or piston) away from the valve seat, opening the flow path from inlet to outlet. When the coil is de-energised, a return spring pushes the plunger back onto the seat, closing the valve. Because the electromagnetic force acts directly on the plunger without relying on line pressure assistance, the valve can operate at zero inlet pressure — a critical advantage over pilot operated designs in vacuum, gravity drain, and low-pressure applications. The coil is rated for 100% ED (continuous duty), meaning it can remain energised indefinitely without overheating during normal plant operation.

1

Coil Energised

When electrical power (24V DC or 230V AC) is applied to the coil, a magnetic field is generated around the coil assembly. The magnetic force attracts the plunger (armature) upward, compressing the return spring.

2

Plunger Lifts

The plunger lifts off the valve seat, opening the flow path between inlet and outlet. Process media (water, air, oil, steam, or gas) flows through the valve body from inlet port to outlet port.

3

Valve Open (ON)

While the coil remains energised, the valve stays fully open. 100% ED rating allows continuous energisation for unlimited duration. Media flows continuously at rated pressure and flow capacity.

4

Coil De-energised (OFF)

When power is removed, the return spring forces the plunger back onto the valve seat, sealing the flow path. The valve closes tightly, and media flow stops completely. The cycle can repeat at the rated frequency.

? Key Advantage — Zero Pressure Differential Operation

Unlike pilot operated solenoid valves that require a minimum pressure differential (typically 0.5 to 1 bar) to open, a direct acting solenoid valve opens using only electromagnetic force — it operates at zero inlet pressure. This makes it the correct selection for vacuum applications, gravity-fed drain lines, vent-to-atmosphere circuits, and any installation where the upstream pressure may be at or near zero bar. The trade-off is that direct acting valves have lower flow capacity (Cv/Kv values) compared to pilot operated valves of the same pipe size, because the electromagnetic force must overcome both the spring force and the media pressure acting on the plunger area.

Body Material Selection

Brass Stainless Steel Cast Iron
Body MaterialStandardSpecify ForNot For
Brass Forged Brass / CZ122 Water, compressed air, neutral gas, light oil, general industrial automation — most economical option — standard for pneumatic and water control systems — good machinability and corrosion resistance for non-aggressive media Steam above 120°C, chloride water, seawater, concentrated acid or alkali — brass dezincifies in aggressive chloride environments
Stainless Steel SS304 / SS316 / CF8M Chemical process, food and beverage, pharmaceutical, outdoor installations, marine coastal, corrosive media — excellent corrosion resistance — suitable for wash-down environments — long service life in aggressive conditions Cost-sensitive applications where brass is adequate — stainless steel commands a price premium of 2 to 3 times over brass for the same size
Cast Iron GG25 / FC250 Steam service, heavy oil, industrial gas, high-temperature air, robust mechanical protection applications — high-pressure rating for steam — strong and rigid body for industrial plant environments Water with chlorides, corrosive chemical, food-grade or pharmaceutical — cast iron corrodes in acidic or chloride-containing service

?? Body Material Selection Rule

For water, compressed air, and pneumatic automation: brass body — the most common and economical choice that covers the majority of Indian industrial applications. For chemical, food, pharmaceutical, or outdoor installations: stainless steel body — the corrosion resistance justifies the premium cost in aggressive media environments. For steam, heavy oil, and rugged industrial service: cast iron body — provides the mechanical strength and temperature rating required for steam plant applications.

Seal Material Selection

The seal material (also called the seat seal or diaphragm) determines the valve’s compatibility with specific media, temperature range, and chemical resistance. Selecting the correct seal material is as important as selecting the correct body material — the wrong seal will cause leakage, rapid degradation, and premature valve failure. KELOR supplies 2/2 way direct acting solenoid valves with four standard seal material options to cover the full range of industrial media and temperature requirements:

Seal MaterialChemical NameMax TemperatureBest ForNot For
NBR Nitrile Rubber 90°C Water, compressed air, light oil, mineral oil, hydraulic oil, neutral gas — most economical seal — standard for water and pneumatic service Steam, ozone, ketones, chlorinated hydrocarbons — NBR hardens and cracks above 90°C
Viton (FKM) Fluorocarbon Rubber 180°C Hot oil, chemical resistance, fuels, acids, aromatic hydrocarbons — wide chemical compatibility — suitable for chemical process and petrochemical service Steam (continuous above 150°C), low-temperature applications below -20°C — Viton is expensive, only specify when chemical resistance is required
EPDM Ethylene Propylene Diene 150°C Hot water, steam (intermittent), glycol, brake fluid, mild chemical — excellent water and weather resistance — good for HVAC and hot water systems Mineral oil, petroleum-based fluids, fuels — EPDM swells and degrades in oil and petroleum media
PTFE PTFE (Teflon) 200°C Steam (continuous), aggressive chemical, corrosive media, high-purity applications — widest chemical resistance of all seal materials — food and pharmaceutical grade Applications requiring soft seating — PTFE has higher leakage tendency compared to rubber seals due to its rigidity

? Common Seal Selection Mistake

The most common seal selection error is using NBR seals for steam service. NBR degrades rapidly above 90°C and will fail within days on steam lines operating at 150 to 180°C, causing dangerous leakage. For steam service, always specify PTFE seals (continuous duty up to 200°C) or Viton seals (intermittent duty up to 180°C). Similarly, never use EPDM for oil service — EPDM swells dramatically in petroleum-based fluids. For oil and fuel service, specify NBR for light oil or Viton for hot oil and aggressive hydrocarbons.

Coil Voltage Guide — AC vs DC

The solenoid coil converts electrical energy into the magnetic force that operates the valve. Coil voltage must match the available power supply at the installation site. KELOR supplies solenoid valves with factory-fitted coils in the following standard voltages. Voltage selection is permanent — a coil rated for one voltage cannot be used on a different voltage without immediate damage. Always confirm the control voltage at the installation site before placing an order.

VoltageTypeTypical ApplicationKey Consideration
24V DC Direct Current PLC-controlled automation, DCS systems, electronic control panels, battery backup circuits, solar-powered installations — the most common voltage in modern industrial automation Stable, silent operation. Coil resistance is fixed. No inrush current. Polarity sensitive — confirm + and – terminals. Standard for all PLC-based control systems.
230V AC Alternating Current Direct switch control from plant power supply, relay panels, motor control centres, older plant installations — standard Indian industrial mains voltage Inrush current on energisation is 5 to 10 times holding current. Coil hums during operation. Not polarity sensitive. Standard for relay-based control systems.
110V AC Alternating Current Imported machinery, US-standard equipment, specific OEM requirements, dual-voltage installations with step-down transformers Same operating characteristics as 230V AC but at half the voltage. Less common in Indian plants but required for certain imported equipment and OEM specifications.

?? DC vs AC Coil — Operational Differences

DC coils provide stable, silent operation with consistent force output — the electromagnetic force is constant regardless of the AC cycle position. DC coils are polarity sensitive and must be connected with correct positive and negative terminals. AC coils produce a characteristic hum during operation due to the alternating magnetic field (50 Hz or 60 Hz mains frequency) and have a higher initial inrush current that drops to holding current once the plunger is seated. AC coils are not polarity sensitive and can be connected either way. For PLC and electronic control systems, 24V DC is the industry standard. For direct switch control from the plant power supply, 230V AC is the standard in India.

Technical Specifications

ParameterSpecification
Valve Type2/2 Way Direct Acting — Normally Closed (NC)
Body MaterialBrass / Stainless Steel (SS304 / SS316) / Cast Iron (GG25)
Seal MaterialNBR / Viton (FKM) / EPDM / PTFE
Coil Voltage24V DC / 230V AC / 110V AC
Pressure Range0 to 16 Bar (0 to 232 psi)
Size Range1/4″ (DN8) to 2″ (DN50)
Operating MediaWater, Air, Oil, Steam, Gas, Neutral Chemical
Duty Cycle100% ED (Continuous Duty)
Operating Temperature-10°C to +200°C (depending on seal material)
Coil ProtectionIP65 (dust-proof, water jet protection)
Connection TypeFemale Threaded (BSP / NPT) / Flanged
MOQ10 Pieces per specification

Applications in Indian Industries

2/2 way direct acting solenoid valves are among the most widely used automation components in Indian industry. Their simple ON–OFF operation, fast response time, and compatibility with PLC and electronic control systems make them the standard choice for automated fluid control across virtually every industrial sector. KELOR supplies solenoid valves to the following industries from the Ahmedabad warehouse with Pan India dispatch capability.

Water Treatment & RO Plants

Reverse osmosis plants, demineralisation (DM) plants, sewage treatment, and effluent treatment use solenoid valves for automated flush cycles, backwash control, chemical dosing line isolation, and product water divert valves. Brass body with EPDM seals is the standard combination for water treatment applications.

Industrial Automation & PLC

Pneumatic actuator control, cylinder sequencing, air dryer sequencing, and process valve automation use 24V DC solenoid valves controlled by PLCs and DCS systems. The 2/2 way direct acting design provides fast, reliable switching with zero minimum pressure requirement — essential for pneumatic circuits that start from zero pressure.

Steam Tracing & Heating

Steam tracing lines for process pipe freeze protection, steam jacket heating, and autoclave systems use solenoid valves with cast iron body and PTFE seals for temperature control. The direct acting design operates reliably even when steam pressure drops during low-demand periods — a critical reliability advantage for freeze protection systems.

Compressed Air & Pneumatics

Compressor unload, air receiver drain, pneumatic conveying, dust collection pulse-jet cleaning, and instrument air supply use brass body solenoid valves with NBR seals. 24V DC coils are standard for PLC-controlled compressor sequencing, while 230V AC coils are used for direct switch control on smaller systems.

Direct Acting vs Pilot Operated Solenoid Valve

Understanding the difference between direct acting and pilot operated solenoid valves is critical for correct valve selection. Both types are 2/2 way (two ports, two positions) and perform ON–OFF flow control, but they operate on fundamentally different principles and are suited to different applications. Selecting the wrong type can result in valve failure, unreliable operation, or unnecessary cost.

ParameterDirect ActingPilot Operated
Operating Principle Electromagnetic force directly lifts plunger from seat Electromagnetic force opens pilot passage; line pressure assists lifting the main valve
Min. Pressure Differential Zero — operates at 0 bar inlet pressure 0.5 to 1 bar minimum required
Flow Capacity (Cv) Lower — limited by electromagnetic force and plunger area Higher — line pressure assists, allowing larger orifice for same coil
Response Time Fast — typically 10 to 50 milliseconds Moderate — typically 50 to 500 milliseconds
Best Applications Vacuum, low-pressure, gravity drain, steam tracing, vent-to-atmosphere, zero-pressure-start circuits High-flow water, compressed air mains, gas distribution, process piping with consistent pressure
Size Range Typically 1/4″ to 2″ Typically 1/2″ to 4″ and larger

Why Choose KELOR

15,000+ Solenoid Valves Supplied
99% Operational Reliability
3 Days Standard Dispatch Time
Pan India Delivery Coverage
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Pressure-Tested Valves

Every solenoid valve is factory-tested for leakage at rated pressure before dispatch. Test certificates provided with every order for QA documentation and project compliance.

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High-Quality Coils

100% ED rated coils with IP65 protection. Class H insulation for extended thermal life. Correct voltage marked on every coil enclosure for safe and reliable installation.

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Fast Dispatch

Standard brass valves dispatched within 3 to 5 working days from Ahmedabad warehouse. SS and CI valves dispatched within 7 to 10 working days. Express dispatch available for urgent orders.

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OEM Branding Support

KELOR supports OEM buyers with neutral packing and customised labelling. Bulk orders with buyer’s brand name and part number printed on packaging are supplied on request.

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Export Supply

KELOR supplies solenoid valves for export orders with export-grade packing, commercial invoices, and shipping documentation. Export pricing varies by destination and quantity.

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Full Documentation

GST invoice, test certificates, and Mill Test Report 3.1 (on request from verified vendors) provided with every order. Project BOM documentation customised to buyer requirements.

Vendor Partner Registration

KELOR is a sourcing and supply company — not a manufacturer. We source solenoid valves from verified vendor partners who manufacture to our quality requirements. If you are a solenoid valve manufacturer looking for a reliable distribution and supply partner in India, we invite you to register as a KELOR vendor partner. We offer long-term supply agreements, consistent order volumes, and Pan India market reach through our established customer base in industrial automation, water treatment, steam systems, and OEM segments.

?? Become a KELOR Vendor Partner

We are looking for vendor partners who can manufacture 2/2 way and 3/2 way solenoid valves in brass, stainless steel, and cast iron body materials with consistent quality, competitive pricing, and reliable delivery schedules. To register, send your company profile, product catalogue, quality certifications (ISO 9001), and sample pricing via WhatsApp or email. Our procurement team reviews vendor applications within 5 working days.

Register as a Vendor Partner

Submit your company details and product catalogue to explore long-term supply opportunities with KELOR.

Register on WhatsApp Register by Email

Commercial Information

?? Pricing & Ordering

Price RangeINR 650 to INR 6,500 per piece (varies by body material, size, seal, and coil voltage)
MOQ10 Pieces per specification (body material, size, seal, voltage)
GST18% (HSN 8481 80 90 — solenoid valves)
Dispatch3–5 working days (brass), 7–10 working days (SS / CI)
PackingStandard export carton with product label and specifications
PaymentAdvance or as agreed for project orders
DocumentationGST Invoice, Test Certificate, MTR 3.1 on request
ExportAvailable with commercial invoice and shipping docs

?? B2B Buying Checklist

When placing an order for 2/2 way direct acting solenoid valves, provide the following specifications for accurate pricing and correct supply: (1) Body material — brass, stainless steel, or cast iron. (2) Size — 1/4″, 1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″, or 2″. (3) Seal material — NBR, Viton, EPDM, or PTFE. (4) Coil voltage — 24V DC, 230V AC, or 110V AC. (5) Connection type — BSP threaded, NPT threaded, or flanged. (6) Quantity per specification. (7) Delivery location. WhatsApp or email these details for pricing within 2 hours during business hours.

SS304 Gear Operated Butterfly Valve

SS304 body, gear operated, wafer and lug type, DN50 to DN300 — water, chemical, HVAC service

Y Strainer Flanged Class 150

WCB / CF8 / CF8M body, SS304/SS316 screen, DN25 to DN300 — ASME B16.5 — API 598

Y Type Flush Bottom Valve

SS304 / SS316 body, flush bottom mount, pharmaceutical and chemical reactor drain

Frequently Asked Questions

What is the difference between direct acting and pilot operated solenoid valves?
A direct acting solenoid valve uses the electromagnetic force from the coil to directly lift the plunger and open the valve seat — it operates with zero pressure differential (0 bar minimum). A pilot operated solenoid valve uses the upstream line pressure to assist opening — it requires a minimum pressure differential (typically 0.5 to 1 bar) to operate. Direct acting valves are suitable for low-pressure systems, vacuum applications, and where the valve must open regardless of inlet pressure. Pilot operated valves are suitable for higher flow rates at higher pressures where the line pressure can provide the force to open the main valve. For industrial automation on water, air, and gas lines with pressures above 1 bar, pilot operated valves are more common. For steam tracing, vacuum, and low-pressure liquid lines, direct acting valves are the correct choice.
Which seal material should I select for a solenoid valve on steam service?
For steam service, specify PTFE (Teflon) seals. PTFE withstands continuous temperatures up to 200°C and provides the best chemical resistance among standard seal materials. Viton (FKM) is an alternative for steam temperatures up to 180°C but degrades faster under continuous steam exposure. NBR (Nitrile) is not suitable for steam — it degrades above 100°C. EPDM is rated up to 150°C but has limited chemical resistance. For saturated steam at process temperatures of 150 to 180°C, PTFE is the recommended seal material for longest service life.
Can I use a 24V DC coil on a 230V AC supply?
No — a 24V DC coil must be operated on 24V DC power supply only. Applying 230V AC to a 24V DC coil will immediately burn the coil winding. Similarly, a 230V AC coil must be operated on 230V AC only. The voltage rating is permanently marked on the coil enclosure. To select the correct coil voltage, check the available control voltage at the installation site: if the control panel provides 24V DC (typical of PLC-controlled systems), specify a 24V DC coil. If the plant electrical supply is 230V AC with direct switch control, specify a 230V AC coil. KELOR supplies solenoid valves with factory-fitted coils in all standard voltages — confirm voltage at the time of order.
What does 100% ED duty cycle mean for a solenoid valve?
100% ED (Elektro-Dauerbetrieb / continuous duty) means the solenoid coil is designed to remain energised continuously without overheating or thermal damage. In a 100% ED valve, the coil can stay in the ON position for unlimited time — days, weeks, or months — during continuous process operation. This is important for valves that remain open during normal plant operation and only close during shutdown or safety events. If a valve is rated for a lower duty cycle (for example 25% ED or 50% ED), the coil will overheat if left energised continuously and will eventually fail. KELOR supplies 2/2 way direct acting solenoid valves with 100% ED rated coils suitable for continuous industrial process duty.
What is the MOQ and delivery timeline for solenoid valves?
MOQ is 10 pieces per specification (body material, size, seal material, coil voltage). Project BOM orders combining multiple specifications in a single order are supplied together with one GST invoice. Standard brass 1/4″ to 1″ NBR seal valves with 24V DC or 230V AC coils are dispatched within 3 to 5 working days from the Ahmedabad warehouse. Stainless steel and cast iron valves in non-standard seal materials may require 7 to 10 working days. WhatsApp specifications — body material, size, seal, voltage, and quantity — for pricing within 2 hours during business hours.
Can solenoid valves be used for explosive or hazardous area installations?
Standard solenoid valves with standard coil enclosures are not rated for hazardous area (Ex-proof) installation. For Zone 1, Zone 2, or Class I Division 1 hazardous areas, the solenoid coil must have an explosion-proof enclosure certified to IECEx or ATEX standards. KELOR can source solenoid valves with Ex-proof coils on request for project orders — specify the zone classification and certification standard at the time of enquiry. For non-hazardous general industrial areas, standard coils with IP65 protection are suitable for most plant environments.
What is the typical service life of a direct acting solenoid valve?
A direct acting solenoid valve with 100% ED coil and correct seal material selection typically provides 500,000 to 2,000,000 operating cycles depending on service conditions, media cleanliness, and operating frequency. On water and air service with clean media and moderate cycling (10 to 50 cycles per day), service life of 5 to 10 years is common. On steam or aggressive chemical service, seal degradation is the primary life-limiting factor — PTFE seals on steam may last 2 to 5 years before replacement is needed. The electromagnetic coil itself, if operated within rated voltage and ambient temperature, typically lasts 50,000+ hours of continuous energisation.
Does KELOR provide Mill Test Reports for solenoid valves?
Mill Test Report 3.1 can be provided on request from verified vendors for project QA documentation. Hydrostatic test certificates are provided with every order for cast iron and stainless steel body valves. Brass body valves are supplied with factory test reports confirming pressure testing and coil performance. For OEM branding orders, KELOR can arrange customised documentation to match buyer requirements — specify documentation needs at the order stage.

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?? Connect with KELOR

Instagram — @kelorvalves LinkedIn — Krishna Industries (KELOR) WhatsApp — +91 93135 43530 Email — hello.krishnavalves@gmail.com

Krishna Industries (KELOR) supplies industrial-grade 2/2 way direct acting solenoid valves from verified vendor partners in brass, stainless steel, and cast iron body materials with NBR, Viton, EPDM, and PTFE seal options and 24V DC, 230V AC, and 110V AC coil voltages. Every valve is pressure-tested before dispatch and supplied with full documentation including GST invoice, test certificates, and MTR 3.1 on request. With 15,000+ solenoid valves supplied to automation integrators, OEMs, and industrial buyers across India, KELOR provides consistent quality, competitive pricing, and reliable Pan India dispatch from the Ahmedabad warehouse. WhatsApp or email your specifications for pricing within 2 hours.