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Storage before installation:
There are no special requirements for storage of these mud valves; their intended use can be more severe than
environmental conditions.
However, the valves should be handled with proper care and attention during shipment, handling, and storage to
prevent physical damage, especially from contact with material handling equipment.
Operation and Maintenance Precautions during freezing weather:
Although it is unlikely a tank would be drained during freezing conditions, proper precautions must be observed
during these operations, as water can be retained in the stem protector cavity of the Gate when the valve is
opened after being submerged.
By closing the valve after the tank is drained, air is drawn into the stem protector and forms a cushion. This air
cushion prevents freezing damage to the stem protector.
Always close the valve after the tank has been emptied, if the valve will be subjected to freezing temperatures,
either during operation, or for maintenance.
Operation:
Trumbull mud valves are designed to open left, by turning the stem counterclockwise; they will seat by rotating the
stem in a clockwise rotation.
The mud valve is manufactured to seal with minimum torque.
If the valve does not seal with 35 foot pounds of torque, inspect for obstructions on the seating surfaces.
Using excess closing torque with an obstruction or debris on the seats will not seal the valve; instead it may cause
damage to the seating surfaces. Position Indicators are recommended on the mud valves to avoid over-torquing
(from opening or closing while the gate is obstructed), causing damage to the seats or stems.
Maintenance:
Trumbull mud valves are designed to require very little maintenance.
When the mud valve is available for servicing, the following measures will help to assure trouble-free perfor-
mance.
Clean the valve by pressure washing it to remove any debris.
Wipe the seating surfaces with a clean rag, and allow the valve to dry, by natural or forced
warm
air.
Remove all the debris from the area around the valve.
Once the valve is dry inspect the seating surfaces for condition and damage.
Inspect all the fasteners to insure they are tight; retighten if necessary.
Lubricate the stem (a food grade lubricant may be required by the application.)
Loctite 82328 SuperLube is used on all of our stainless steel mud valves.
Document the service. Include a description of inspection observations, all work that was performed,
and recommended follow-up actions.
No spare parts are required for maintenance; replacement parts are available for damaged valves.
Trumbull
Manufacturing
Resources:
For any questions, comments, or concerns, please contact our people at the following numbers:
Sales and Manufacturing
Scott Greaver
330-393-1291
Quality
Assurance
Dwayne
Hill
330-392-1353
Engineering
Craig
Newmeyer 330-799-3333
revised: Feb. 1, 2013
