Pressure Seal Gate Valves -Style A-
Installation and Maintenance Instructions
Emerson reserves the right to change the contents without notice
SAPLT-0028-EN-1308
Section 1 - Valve Storage
1.1 Preparation and Preservation for Shipment
All valves are properly packed in order to protect the parts that are subject to deterioration during
transportation and storage on site. In particular, the following precautions should be taken:
1. The valves must be packed with the wedge in the closed position.
2. The weld ends surface shall be protected with suitable protective like Deoxaluminite. The end
shall be closed with plywood or plastic disc fixed at the edge by strips.
3. All actuated valves must be carefully securely palleted or crated, in order to ensure that the
parts of actuator (especially pneumatic piping or accessories) do not extend beyond the skid/
crate.
4. The type of packing must be defined in the Customer’s Order and shall be appropriate to ensure
safe transportation to final destination and eventual conservation before installation.
Cast Gate Valves Pressure Seal -Style A-
Wedge Gate and Parallel Slide Configuration
1.2 Handling Requirements
A - Packed Valves
Crates: Lifting and handling of the packed valves in crates will be carried out by a fork lift truck, by
means of the appropriate fork hitches.
Cases: The lifting of packed valves in cases should be carried out in the lifting points and at
the center of gravity position which have been marked. The transportation of all packed
material must be carried out safely and following the local safety regulations.
B - Unpacked Valves
1. The lifting and the handling of these valves has to be carried out by using appropriate means
and at respecting the carrying limits. The handling must be carried out on pallets, protecting the
machined surfaces to avoid any damage.
2. With valves of large dimensions, the sling and the hooking of the load must be carried out using
the appropriate tools (brackets, hook, fasteners, ropes) and load balancing tools in order to
prevent them from falling or moving during the lifting and handling.
Contents
1
Valve Storage
1
1.1
Preparation and Preservation for Shipment
1
1.2
Handling Requirements
1
1.3
Storage and Preservation before Installation
2
2 Installation
2
2.1
Preparation before Installation
2
2.2
Installation Instructions
3
2.3
Valve Verification before Start Up
3
2.4
Operations Instructions
3
Table I: Bolt Torque Figures for Packing Bolts
4
Table II: Bolt Torque to Ensure Tightness of Pressure Seal Gasket
4
2.5
Periodic Valve Verification during Service
4
Troubleshooting Guide
4
3 Maintenance
5
3.1
Packing Maintenance
5
3.2
Bonnet Gasket Replacement
5
4
Valve Removal
6
5
Greases and Special Tools
6
5.1 Greases
6
Table III: Grease and Lubricant List
6
5.2
Special Tools
6
SAPAG
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