Valve Quick-Check - Flowserve Valtek FlowTop V750 User Instructions

Valtek FlowTop
1. Remove the protective flange covers and coating from
the control valve; clean the flange gasket surface.
NOTICE
graphite gaskets. Consult a current chemical resis-
tance list before applying.
2. Install the control valve in an upright position whenever

10 Valve Quick-Check

Apply appropriate personal protective equip-
ment when working on the control valve to
prevent hazards arising from the operation.
Protect yourself against freezing, burns and
cuts by wearing appropriate protective cloth-
ing, gloves and eye protection.
Prior to valve operation, we require, that you check the following conditions to reduce the risk of malfunction and safety
related incidents.
No.
1
Avoid critical operating conditions where excessive noise
or vibration levels might occur.
2
Avoid frequent system start-ups and shutdowns.
3
Keep the operating medium free of foreign particles.
4
Instrument air must conform to ISA 7.0.01-1996 (with a dew
point at least 18°F (10°C) below ambient temperature, par-
ticle size below 1 µm and oil content not to exceed 1 ppm)
5
Do not touch the body and bonnet ! The tempera-
ture of the operating medium is transferred to
the surface of the linear actuator.
6
Critical operating conditions can cause exces-
sive or hazardous levels of vibration or noise.
7
Incorrect maintenance can result in the emission
of hot, cryogenic, and / or toxic operating media.
8
FCD VLEEIM1485-04 (EN/A4) November 2022
Unsuitable cleaning agents can dam-
age and cause leakage in PTFE and
Important information
Table 3: Basic safety massages for operating the valve
possible. Vertical installation permits easier valve
maintenance.
3. Install and connect the control valve to the pipeline.
Locate gaskets in the center of the body flanges and
secure nuts and bolts.
4. Connect the power supply and instrument signal lines.
Do not over-tighten packing.
Sudden exposure of the control valve to
full working pressure and temperature
may cause stress cracks.
Possible malfunction or safety related incident
Impermissible continuous operation of a control valves
under critical conditions can damage the valve.
Critical operating conditions, which can damage the
control valve, may be encountered during system start-up
or shut down.
Installing a suitable strainer upstream of the control valve
can prevent foreign particles from damaging the valve.
Contaminated instrument air can damage the accessories
and control valve or cause them to fail.
Excessive hot surface temperatures can put you at risk for
burns.
Frigid surface temperatures can put you at risk for
freezing.
Impermissible levels of vibration can cause hearing
loss, vascular and nerve damage and damage to joints
and bones. Use hearing protection when noise levels
exceed 80 dB(A).
Incorrect maintenance can put you at risk for heat
related burns, freezing, acid burns or poisoning.