Valve Testing & Inspection

During large shut downs of plants, hundreds of valves tend to have various needs to be inspected and/or overhauled.
In collaboration with our customers, we provide inspections during shut downs as well as supervision of disassembly of valves, overhaul, progress, replacement, performance and commissioning of valves and actuators. These value added services lead to an increase in quality, saving costs and a shorter shut down period.

TYPES OF TESTING
  • Shell Hydro Testing
  • Shell Nitrogen Testing
  • Seat Hydro Testing
  • Seat Air Testing
  • Seat Nitrogen Testing
  • Helium Testing
  • Fugitive Emissions Testing
  • Operational Torque Testing
 
TYPES OF INSPECTION
  • RT
  • PT
  • UT
  • MT
  • VT
  • PMI
  • Failure Analysis
  • Emissions Monitoring & Data Collecting
  • EPA Method 21

Basic Valve Maintenance Inspection Points

THROUGH CONDUIT GATES
•  Inject appropriate new valve stem packing and pack off to correct pressure
•  Inject appropriate grease into valve seats
•  Remove stem cover and apply lubrication to the stem threads
•  Inject grease into the gear box bearing fitting
•  Stroke valve (if allowed) to insure smooth operation
•  Visually inspect valve and fittings for damage and leakage
•  Record serial number, date, time, location, type of maintenance performed and any findings​

TRUNNION MOUNTED BALLS
•  Inject appropriate grease into stem seal fittings
•  Inject appropriate grease into valve seat fittings
•  Inject appropriate grease into gear box bearing fittings
•  Stroke valve (if allowed) to insure smooth operation
•  Visually inspect valve and fittings for damage and leakage
•  Record serial number, date, time, location, type of maintenance performed and any findings

SWING CHECKS
•  Verify smooth flow and confirm no slamming of clapper
•  Inject grease into external hinge pin access grease fitting
•  Visually inspect valve and fittings for damage and leakage
•  Record serial number, date, time, location, type of maintenance performed and any findings

PISTON CHECK
•  Verify for smooth flow and confirm piston is not slamming or chattering
•  Visually inspect valve and fittings for damage and leakage
•  Record serial number, date, time, location, type of maintenance performed and any findings

LUBRICATED PLUGS
•  Inject appropriate plug valve sealant/lubricant into plug
•  If valve is gear operated, inject appropriate grease into the gear stem bearing fitting
•  Stroke the valve (if allowed) to insure smooth operation
•  Visually inspect valve and fittings for damage and leakage
•  Record serial number, date, time, location, type of maintenance performed and any findings

WEDGE GATES - BOLTED BONNET
•  Inject and clean stem threads
•  Inspect and adjust stem packing
•  Stroke the valve (if allowed) to insure smooth operation
•  Visually inspect valve and fittings for damage and leakage
•  Record serial number, date, time, location, type of maintenance performed and any findings

GLOBE VALVES - BOLTED BONNET
•  Inject and clean stem threads
•  Inspect and adjust stem packing
•  Stroke valve (if allowed) to insure smooth operation
•  Visually inspect valve and fittings for damage and leakage
•  Record serial number, date, time, location, type of maintenance performed and any findings

To get started, contact us at info@apvalveservices.com, 
(855) 604-1994 or complete a Service Request.