What is the difference between pilot operated and direct acting solenoid valves?

Pilot operated solenoid valves require a minimum differential pressure (typically 0.3-1 bar) across the valve to function properly. The solenoid controls a pilot passage which then utilizes line pressure to move the main diaphragm or piston. This allows for larger flow capacities with smaller solenoids. Direct acting valves have no minimum pressure requirement and can operate from full vacuum.

What are the common applications for pilot operated solenoid valves?

Pilot operated solenoid valves are widely used in water supply systems, air compreeson systems, irrigation, car wash systems, and light oil applications. They are particularly cost-effective for larger pipe sizes where direct acting valves would require prohibitively large solenoids. The lower power consumption also makes them ideal for continuous duty applications.

What seal materials are available for different media?

Common seal materials include NBR (Buna-N) for petroleum oils and greases, EPDM for hot water and steam, FKM/Viton for chemicals and high-temperature oils, and PTFE for aggressive chemicals. Our engineering team can recommend the optimal seal material based on your specific media, temperature, and pressure conditions.

Can these valves be used for exhaust or vacuum service?

Standard pilot operated valves require a minimum pressure to function. For vacuum applications, we recommend our direct acting solenoid valves which can operate from full vacuum to their rated pressure. For specific vacuum requirements, consult our engineering team for custom solutions.

Solenoid Valves

Pilot Operated Solenoid Valve

Name: Pilot Operated Solenoid Valve
Brand: Supreme Valves India
SKU: solenoid-valve-pilot-operated
Availability: InStock
Rating: 4.8 (127 reviews)

Energy-efficient pilot operated solenoid valves for water, air & light oils. 2-way and 3-way configurations. DN15 to DN100. OEM pricing for bulk orders. Worldwide shipping from India.

Common Applications

Water SupplyAir SystemsLight OilsSteamChemical Processing

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Materials of Construction (MOC)

Component	Material Specification
Body & Bonnet	Ductile Iron (ASTM A536 / EN-GJS-400-15)
Stem / Spindle	SS 410 / SS 420
Seat / Trim	EPDM / NBR / Bronze

Technical Specifications

Parameter	Specification / Standard
Manufacturing / Design Standard	EN 1171 / AWWA C509 / BS 5163
Testing Standard	API 598 / EN 12266-1
Pressure Rating	PN16 / PN25

Testing Details & Standards

Port: 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2", 3" & 4" (Available BSP / NPT)
End Connection: Screwed / Flange
Body Material: SS ASTM A351 Grade CF8 / CF8M
Circumstance Temp: -10°C to 70°C
Media: Air, Water, Chemical, Gas, Oil & LPG
Main Features: Internal Parts are in superior corrosion resistance steel, (Equivalent to SS316L) Suitable for Food Industries, Pharmaceuticals, Chemical application & Highly corrosive environment.
Coil Features: High Reliability Unaffected by Voltage Surges. Easy coil changes coil lockable in 4X90 position or freely movable in between as require.
Coil Housing: IP65 Epoxy square coil, IP65 Metallic round enclosure, IP67 Flameproof enclosure, IP68 Weatherproof enclosure.
Optional Feature: 90% Power saver series also available, Manual Override, Water hammering reducer also available to avoid water hammer forces.
Other Specification Data: Available on Request. - High Pressure 20Kg Series. - Manual Override