MRO Field Guide

Industrial Valves Compared: Solenoid, Ball & Mechanical Options for Air and Water

A practical look at four industrial valve styles-two solenoid options, a push-button air valve, and a carbon steel ball valve-priced from $17.79 to $174.99.

Last updated Aug 17, 2026

When you need an industrial valve, the first decision is behavioral: do you want a valve that opens when a coil is energized, stays open until you press a button, or simply rotates with a lever? Port size, media compatibility, and voltage further narrow the field. The four options below cover that spread, from a manually operated push-button valve to a large-port solenoid valve.

Quick take

If you need a hand-operated trigger for pneumatic switching, the green push-button mechanical valve is the direct route. If you need a lever-operated shutoff, the FNW Fig 321A is the simple manual pick. For remote electrical control, the ASCO 8215C83 handles the large-port solenoid slot, while the WIC Valve 2PCH adds a manual override and a wider media list.

How to read them

There is no universal best valve here because each one solves a different flow problem. Solenoid valves suit remote or automatic cycles where a controller can send power. A mechanical push-button valve suits a local operator who needs to trigger another pneumatic device by hand. A ball valve suits a straightforward open/close shutoff that stays where you set it. Once you know which behavior you need, port size and media usually decide the rest.

Listed price comparison

ProductListed PricePrice Bar
NEW ASCO 8215C83 120/60 120VAC 2" NPT 2-WAY NO INDUSTRIAL SOLENOID VALVE 0-25PSIUSD 95.55
2" Inch Plastic Manual Override Flow Control Electric Solenoid Valve NC 110V ACUSD 174.99
2 Position 3 Way Green Push Button Air Mechanical Valve - Industrial Air ValveUSD 17.79
FNW Fig 321A 3/4" Carbon Steel Ball Valve 150 WSP 3-Piece Industrial ValveUSD 39.00

Decision matrix

ProductValve TypeOperationPort SizeSuitable Media
ASCO 8215C83SolenoidNormally open2" NPT-
WIC Valve 2PCHSolenoidNormally closed2" NPT femaleAir, inert gas, liquid, water
Green Push-Button ValveMechanical2-position 3-way1/4" PTAir
FNW Fig 321ABallManual lever3/4" FPTWater

Product notes

NEW ASCO 8215C83 120/60 120VAC 2" NPT 2-WAY NO INDUSTRIAL SOLENOID VALVE 0-25PSI

NEW ASCO 8215C83 120/60 120VAC 2" NPT 2-WAY NO INDUSTRIAL SOLENOID VALVE 0-25PSI

The ASCO 8215C83 is a 2-inch solenoid valve rated for 0-25 PSI and powered by 120VAC. It is a 2-way N.O. unit with a 2" NPT connection, so it's aimed at larger industrial lines that need the valve open until the coil closes it. A limitation is the fail state: if power loss should close the line, this normally open unit won't do it. It is offered as new without the original box, so the priority is function and condition in hand rather than shelf-ready packaging.

2" Inch Plastic Manual Override Flow Control Electric Solenoid Valve NC 110V AC

2" Inch Plastic Manual Override Flow Control Electric Solenoid Valve NC 110V AC

The WIC Valve 2PCH starts closed when the coil is off, opens when powered, and includes a manual override for no-power situations. Suitable media include air, inert gas, liquid, and water, making this a cross-purpose solenoid option. The 110V AC coil voltage is in the model number, which defines the power requirement. The limitation is operational: because it starts closed, it won't pass flow until energized or until someone opens the override. It's a good fit for solenoid control plus occasional hand operation on the same valve.

2 Position 3 Way Green Push Button Air Mechanical Valve - Industrial Air Valve

2 Position 3 Way Green Push Button Air Mechanical Valve - Industrial Air Valve

The green push-button mechanical valve is a momentary mushroom button that switches a 2-position, 3-way air circuit. It is intended for pilot lines or small cylinders, not main flow, and it runs without electricity. The metal-and-plastic construction keeps it light, and the 1/4-inch PT ports fit a small-bore pneumatic setup. That makes it an uncomplicated way to give an operator a physical trigger. The limitation is the same scope: it acts as a control valve rather than a line shutoff.

FNW Fig 321A 3/4" Carbon Steel Ball Valve 150 WSP 3-Piece Industrial Valve

FNW Fig 321A 3/4" Carbon Steel Ball Valve 150 WSP 3-Piece Industrial Valve

The FNW Fig 321A is a three-piece carbon steel ball valve with threaded FPT ends and a lever handle. The 150 WSP marking is on the handle, and water is the listed suitable media. That makes it a useful manual shutoff for a water line. The valve is used surplus stock with cosmetic wear, so the finish may show scuffs. The 3/4-inch port is the smallest in the group.

Final recommendation by use case

Start with the operating behavior, then match port size and media. If a line should stay closed until you power it open and you want a manual override, the WIC Valve 2PCH has the features. If your process expects the line open by default, the ASCO 8215C83 is the solenoid to match. For pilot line switching with a physical button, the green push-button mechanical valve is the direct manual pick. For a manual three-piece ball valve, the FNW Fig 321A covers the shutoff slot.

Products in this article
NEW ASCO 8215C83 120/60 120VAC 2" NPT 2-WAY NO INDUSTRIAL SOLENOID VALVE 0-25PSIUSD 95.55View on eBay2" Inch Plastic Manual Override Flow Control Electric Solenoid Valve NC 110V ACUSD 174.99View on eBay2 Position 3 Way Green Push Button Air Mechanical ValveUSD 17.79View on eBayFNW Fig 321A 3/4" Carbon Steel Ball Valve 150 WSP 3-Piece Industrial ValveUSD 39.00View on eBay
NEW ASCO 8215C83 120/60 120VAC 2" NPT 2-WAY NO INDUSTRIAL SOLENOID VALVE 0-25PSIUSD 95.55View on eBay2" Inch Plastic Manual Override Flow Control Electric Solenoid Valve NC 110V ACUSD 174.99View on eBay2 Position 3 Way Green Push Button Air Mechanical ValveUSD 17.79View on eBayFNW Fig 321A 3/4" Carbon Steel Ball Valve 150 WSP 3-Piece Industrial ValveUSD 39.00View on eBay

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