The image shows the ALV-TROL logo in blue, with a stylized circuit design on the left and a round icon of a train in the letter "O." The text "SINCE 1947" appears underneath.
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Balanced 3-Way Diaphragm-Operated Valve

Specializing in standard and custom high-pressure valves for water hydraulics and other high-pressure water systems.

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TWO-PRESSURE VALVE ASSEMBLY

FOR WATER, 95/5, OIL OR OTHER LIQUIDS

A valve actuator with a labeled diaphragm cap on top, and an arrow pointing to it; text above reads "35 PSI (2.4 Bar) air recommended on diaphragm.

The Valv-Trol Balanced 3-Way Diaphragm Operated Valve is
intended for general industrial use. With its rugged steel diaphragm top and
corrosion resistant body construction, it is ideally suited for hydraulic systems that use either raw water or 95/5. It also works extremely well on oil hydraulic systems.

Replaceable seats and discs are made of hardened stainless steel.
Proven to be very resistant to the effects of corrosion, wear, and wire drawing for longer service life.
Internally, the skirted discs provide a gradual change in the rate of flow.
Helps reduce the shock of opening or closing. Any foreign matter is flushed from the seats before the final seal is completed..
The valve can be piped either normally open to pressure or normally closed.
Can also be used to divert flow from one line to another (may require a small internal modification).
Larger Sizes available. *Consult factory for special requirements.

The Valv-Trol Advantage .
Many parts of Valv-Trol Valves are interchangeable between the same size 2-way, 3-way, and check valves. This helps you to reduce your spare parts inventory and allows us to maintain a more complete inventory for your
emergency availability and shorter lead times.

Our valves are all subjected to 100% pressure testing to ensure a drop tight seal before we ship to our customers.

For higher pressures, different port connections, or other special
requirements, please contact the factor.

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Download Bulletin

TWO-PRESSURE VALVE ASSEMBLY

BULLETIN A-3 part 2

Technical diagram of a spring-loaded valve actuator assembly in cross-section, with labeled parts including cap, diaphragm, piston, spring, stem, housing, body, disc, and associated fasteners.
Extra 3/4″ center port on all sizes may be used or plugged

BALANCED THREE-WAY HYDRAULIC VALVES

3500 PSI (240 Bar)

parts list

EXAMPLES OF VALV-TROL 3-WAY VALVE

APPLICATIONS

Diagram of a solenoid valve with one supply input and two output lines labeled OUTPUT #1 and OUTPUT #2. The valve spool is spring-actuated with the default path connecting the supply to OUTPUT #2.
Diversion service—For diverting flow from one source to either of two outputs. This service may require a minor internal modification to prevent shutoff of flow during shifting
Black and white schematic diagram showing two normally closed 2-way valves and one 3-way valve connected to a double-acting cylinder, with supply lines and directional flow indicated by arrows.
One circuit for stopping cylinder rod at any point on either extend or retract cycle.
A schematic diagram showing a valve with three ports labeled Output, Supply #1, and Supply #2. The valve directs flow from either supply to the output based on its internal mechanism.
Selector service—For selecting flow from either of two sources. Applications include any compatible fluids including water, grease, oil, paint, etc.
A simple hydraulic circuit diagram shows a supply line connected to a directional control valve with a spring, which directs fluid flow to a hydraulic ram (cylinder).
on either extend or retract cycle. Simple single acting, gravity return, hydraulic press. See Bulletin A-1 for information on two-pressure valves..
White logo with the text "VALV-TROL" in bold letters, a stylized wing design to the left, and an image of a valve inside the letter "O"; the text "SINCE 1947" appears below the logo.

Valv-Trol's versatile valves have been designed for usage in a wide variety of industrial applications.

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