Storing and preserving valves in the warehouse and on site
Valves can wait months for installation in a warehouse or on a construction site. Poor storage damages seals and coatings before the system ever starts.
TAZ Engineering Team · · 5 min
Storage conditions
Indoors or under cover, on pallets, off the ground. Keep water out of the body: in winter it freezes and can crack the casting. Protect rubber parts from direct sunlight and ozone.
Covers and closure position
Keep factory end covers on until installation: they protect sealing faces and internal cavities. Store ball valves fully open and butterfly valves slightly open so the liner does not take a set. Store gate valves in the position the manufacturer’s manual specifies.
Re-preservation
Preservation grease has a validity period stated in the passport. During long storage check the grease and coating and renew the preservation. Cycle the valves periodically.
Before installation
Inspect the body and coating, stroke the valve through a full cycle and clean the flange faces. Check the marking against the passport. If storage exceeded the preservation period, retest for tightness.
Checklist
- covered storage on pallets
- end covers in place
- closure position
- preservation period
- periodic cycling
- pre-installation check