Instruction Manual
D104727X012
DSV1000 Valve
June 2022
5
Figure 2. Optional Shaft‐to‐Body Bonding Strap Assembly
VALVE BODY
ACTUATOR
A
A
VIEW A-A
A3143-2
Maintenance
Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection
and replacement depends upon the severity of service conditions.
WARNING
Avoid personal injury or equipment damage from sudden release of process pressure or uncontrolled movement of parts.
Before performing any maintenance operations:
D
Do not remove the actuator from the valve while the valve is still pressurized.
D
Do not loosen any pressure retaining bolting while the valve is still pressurized. This includes the body to tailpiece nuts
(key 21), packing box housing screws (key 10), packing nuts (key 36) or pipe plugs (keys 23 and 28).
D
Avoid injury by keeping hands, tools, and other objects away from the ball while stroking the valve.
D
Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D
Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Check the
actuator cannot suddenly open or close the valve.
D
Vent the power actuator loading pressure and relieve any actuator spring precompression.
D
Use bypass valves or completely shut off the process to isolate the valve from process pressure, relieve any process
pressure from both sides of the valve body, and drain the process media from both sides of the valve.
D
Dual‐seal constructions can retain pressure and process fluid even after process pressure has been removed from both
sides of the valve. The ball should be partially opened to relieve this pressure before disassembling or removing the
valve from the line. Take additional care if the process fluid is hot, flammable, caustic, or hazardous.
D
A tip over hazard exists for the valve/actuator assembly. Ensure the valve/actuator assembly is properly secured and
always supported to prevent falling or rolling which may cause injury or property damage.
D
Use lock-out/tag-out best practices and procedures to be sure that the above measures stay in effect while you work on
the equipment.
D
The valve packing box housing may contain process fluids that are pressurized, even when the valve has been removed
from the pipeline
.
Process fluids may spray out under pressure when removing the packing hardware or packing rings.
D
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.