Valve Quick-Check - Flowserve Valtek GS V701 User Instructions

Valtek GS
1. Remove the protective flange covers and coating from
the control valve; clean the flange gasket surface.
Unsuitable cleaning agents can dam-
NOTICE
age and cause leakage in PTFE and
graphite gaskets. Consult a current chemical resis-
tance list before applying.
2. Install the control valve in an upright position whenever
possible. Vertical installation permits easier valve
maintenance.

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. Important information
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 control valve.
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.
FCD VLEEIM0300-05 (EN/A4) November 2022
3. Install and connect the control valve to the pipeline.
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.
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.
Table 3: Basic safety massages for operating the valve
Locate gaskets in the center of the body flanges and
secure nuts and bolts.
• For pneumatic actuators, connect the air supply and
instrument signal lines.
• For electric actuators, connect the power supply
using the wiring diagram located on removable
actuator cover or in the manufacturer's actuator
documentation.
Possible malfunction or safety related incident
7
flowserve.com