Slide Gate and Diverter Valve Selection and Maintenance

Slide Gate and Diverter
Valve Selection and
Maintenance
Milling
Data Application
Form
LOADING
S O L I D S
&
B U L K
SOLUTIONS
H A N D L I N G
C O M P O N E N T S
Considerations
LOADING
SOLUTIONS
What to look for in a slide gate
1.
2.
3.
4.
Self cleaning
Inline maintenance features
Dust tight to atmosphere
No leakage across the valve
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Typical Types
of Slide Gates
LOADING
SOLUTIONS
Bull Nose Knife Gate
Advantages
1. Low Profile
2. Compact closing end allowing for
installation in tight spaces
Disadvantages
1. Material abrades away end seal
creating leakage
2. Open bonnet creates pinch points which
can cause injury
3. Packs material at end and may not go
fully closed
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Typical Types
of Slide Gates
LOADING
SOLUTIONS
Sliding Plate Gate
Advantages
1. Some designs are self cleaning
2. Easy to maintain and less
housekeeping
3. Protected pinch points
Disadvantages
1. Does not do well with sticky
materials due to large sealing
surfaces
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Considerations
LOADING
SOLUTIONS
What to look for in a pneumatic
conveying diverter
1. Is cross contamination a concern?
2. Inline Maintenance Features
3. Pressure loss through leakage in
convey line
4. Dust tight
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Pneumatic LOADING
Conveying Diverters
SOLUTIONS
Plug Style Diverter
Advantages
1. No cross contamination of material
if line is purged
2. Less wear than flapper style
Disadvantages
1. Cost
2. Size and weight
3. Costly to repair
4. As wear occurs, material packs and
cause valve to seize or bind up
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Pneumatic LOADING
Conveying Diverters
SOLUTIONS
Flapper Style Diverter
Advantages
1. Less costly than plug style
2. Weighs less
3. Cost less to maintain
Disadvantages
1. Seal is exposed to material flow
which causes premature wear
2. Should not shift on the fly
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Pneumatic LOADING
Conveying Diverters
SOLUTIONS
Sliding Plate Style
Diverter
Advantages
1. Can shift on the fly
2. Easy to maintain
3. Seal is out of material flow
Disadvantages
1. Could be some cross
contamination
2. Wear point at Y
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Pneumatic LOADING
Conveying Diverters
SOLUTIONS
Hose Style Diverter
Advantages
1. No cross
contamination
2. Easy to maintain
3. Seal is out of material
flow
Disadvantages
1. Large footprint
2. Cannot shift on the fly
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Considerations
LOADING
SOLUTIONS
What to look for in a gravity diverter
1. Leading edge of blade out of material flow
2. Inline maintenance
• Access cover to inspect, clean and
maintain
• Valves are often times not easily
accessible. Do not want to disconnect
chute work to pull down and out of
service
3. Live loaded shaft seal
• No place for material to build up
• Prevents leakage to atmosphere
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Maintenance
LOADING
SOLUTIONS
A maintenance friendly valve can be
serviced while it remains in-line.
Lack of proper maintenance can lead to:
1. Downtime costs
2. Material loss
3. Labor Costs
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Maintenance
LOADING
S O L I D S
&
B U L K
SOLUTIONS
H A N D L I N G
C O M P O N E N T S
Maintenance
LOADING
S O L I D S
&
B U L K
SOLUTIONS
H A N D L I N G
C O M P O N E N T S
Maintenance
LOADING
SOLUTIONS
The following are some typical valves
found in the milling industry and the
steps to best maintain them
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Milling Industry
Valves
LOADING
Gravity
Slide Gate
Pneumatic
Slide Gate
S O L I D S
&
SOLUTIONS
B U L K
H A N D L I N G
Pneumatic
Conveying
Diverter
C O M P O N E N T S
Gravity
Diverter
Pneumatic LOADING
Slide Gates &SOLUTIONS
Diverters
Quantum Orifice Gate
and Wye Line Diverter
1. Special Service Inlet
2. Dusting
3. Shimming
4. Pressure Plate Replacement
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Special Service
Inlet - SOLUTIONS
Pneumatic Slide Gates
LOADING
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Dusting - Pneumatic
SlideSOLUTIONS
Gates & Diverters
LOADING
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
ShimmingLOADING
- Pneumatic Slide
Gates & Diverters
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Pressure Plate
Replacement
- Pneumatic Slide Gates & Diverters
LOADING
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Gravity Slide
Gate
LOADING
SOLUTIONS
Gravity Slide Gate
1. RS Seal Replacement
2. Special Service Inlet
3. Live Loaded Seals
4. CAM Adjustable Rollers
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
RS Seal Replacement
- Gravity Slide Gate
LOADING SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Special Service
Inlet - SOLUTIONS
Gravity Slide Gate
LOADING
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Live Loaded
Seals - Gravity
Slide Gate
LOADING
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Cam Adjustable
Rollers
- Gravity Slide Gate
LOADING
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Gravity Diverter
Valve
LOADING
SOLUTIONS
Gravity Diverter Valve
1. Removable Cover
2. Live Loaded Shaft Seal
3. Blade Seal Replacement
4. Protected Blade
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Removable
Cover - Gravity
Diverter Valve
LOADING
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Live Loaded
Shaft SealSOLUTIONS
- Gravity Diverter Valve
LOADING
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Removable
Blade Assembly
- Gravity Diverter Valve
LOADING
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Blade SealLOADING
Replacement
- Gravity Diverter Valve
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Protected LOADING
Blade - Gravity
Diverter Valve
SOLUTIONS
S O L I D S
&
B U L K
H A N D L I N G
C O M P O N E N T S
Slide Gate and Diverter
Valve Maintenance
Milling
Questions