Marvin the Maintenance Man wants to help you troubled shoot Solenoid Valves.
BUY valves
HERE! Contact Flow Factor
HERE!
Whoops: "Throw the extra parts away." All parts must be assembled correctly for the valve to operate properly.
Whoops: "I only hit the valve ONCE with my hammer." A hammer is not a trouble shooting tool. Valve abuse contributes to the most reported problems.
Whoops: "We don't need a special wrench; I'll find something to take the valve apart". Special tools for the valve disassembly may be needed. Pipe wrenches etc.
will damage parts.
Whoops: "I'll add more teflon tape." Gobs of tape will block internal passages and interfere with seating. (These are not ball valves).
Whoops: I forgot to turn on the electricity." "I forgot to open the hand valve." "A strainer takes up too much room."
Beware of Marvin Maintenance.
Whoops: "It's only 10 PSI more than maximum operating pressure." "It's almost at the minimum operating pressure." " Voltage is not that important."
Name Plate Data Applies.
Whoops: "I throw them away." Installation and maintenance instruction sheets have trouble shooting hints, maintenance notes and assembly instructions; etc." Do Not Throw Them Away.
Whoops: "So I piped it up backwards and/or upside down." Proper Mounting is
IMPORTANT.
Whoops: "We're out of 1 inch pipe, so I used 1/4 inch pipe." Valves, especially 3-way and 4-way valves,
should not be restricted.
Whoops: "Well it operated pretty well for the past 20 years." A maintenance program is suggested.
Whoops: "The Valve is defective." "The Valve does not operate." "The Valve Failed." Not very descriptive. Find out part number and get application data.
Whoops: "I need the silver thing." = Solenoid Sub Base Assembly.
"I need an orifice." = Not a spare part. Buy a new valve.
"I need gasket." = Specify which one.
"I need plunger." = Core Assembly.
"I need a solenoid." = Coil
Whoops: "What is a Kit?" Do not replace individual parts. Use a kit to replace all the wearable parts and restore the valve. Call for kit # or look on name plate.
Whoops: "Buy any two way valve, they're are all the same." Misapplication problems can be avoided.
Whoops: "I can trouble shoot anything!" We believe you Marvin.
BUY valves HERE!
TROUBLE SHOOTING 2 WAY VALVES
Trouble shooting 2-way DIRECT ACTING Solenoid Valves
Normally Closed Valve Fails to
OPEN when energized:
1. No Voltage
2. Low Voltage
3. Burned Out Coil
4. Excessive Pressure
5. Binding Core
6. Swollen or cut resilient disc
7. No Pressure to valve
Trouble shooting 2-way DIRECT ACTING Solenoid Valves
Normally Closed Valve Fails to
CLOSE when energized:
1. Faulty control circuit
2. Improper Installation
3. Scale of foreign matter
4. Damaged Seat or Disc
5. Binding Core
6. Damaged or Missing Spring
Trouble shooting 2-way DIRECT ACTING Solenoid Valves
Excessive Solenoid
NOISE when energized:
1. Low Voltage
2. Loose Solenoid Parts
3. Foreign Matter on core or Plug Nut
4. Worn Core or plug nut
5. Incorrect or damaged spring
Trouble shooting 2-way PILOT OPERATED Solenoid Valves
Normally Closed Valve Fails to
Open when energized:
1. No Voltage
2. Low Voltage
3. Burned Out Coil
4. Excessive Pressure
5. Binding Core
6. Swollen or cut resilient disc
7. No Pressure to valve
8. Low Pressure
9. Ruptured diaphragm or damaged piston ring
10. Plugged or restricted pilot orifices
Installation Tips for 3 and 4 way Pilot Operated Valves
1. Do Not Select Oversized Valves. Size Carefully for Flow and Cylinder speed. For Economy and reliable operation.
2. Use Full Area Lines in Pressure and Exhaust.
3. I.D. (Internal Diameter) of lines and fittings must be larger than orifice.
4. Differential Between Pressure and Exhaust must exceed the minimum at all times.
5. Do Not Meter Flow in Pressure or Exhaust Lines.
6. Install Speed Control Valves in the Cylinder Lines Only.
7. Avoid Pressure Regulators if Possible. If essential, the regulator must have flow capacity to maintain the MINIMUM Differential
at all times.
8. Hydraulic Pumps or Air Reservoirs must have adequate capacity to maintain the minimum DeltaP
at all times.
9. Pressure Differential may be measured by means of gages installed immediately at the pressure and exhaust connections.
10. Do Not Mistake a Faulty Cylinder for a valve malfunction, Isolate the Cylinder.
BUY valves HERE!
Get a solenoid Valve Quotation HERE!
Flow Factor
216-765-4231
www.flowfactor.com
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