Scope Of Manual; Intended Use; Product Identification; Valtek Flowtop Modification - Flowserve Valtek FlowTop V750 User Instructions

Valtek FlowTop

1 Scope of Manual

The following user information covers the Valtek FlowTop
general service control valve:
• Screwed seat - Type V750, clamped seat - Type V752
• English ASME Units - Class 150 & 300, NPS ½ - 6
• Assembled with a pneumatic actuator
• Comes with or without ancillary equipment

2 Intended Use

Control valves are pressure ves-
WARNING
sels designed and rated for spe-
cific application conditions. Before installation, check the
serial number and / or the tag number to ensure that the
valve and actuator being installed are correct for the in-
tended application. Do not use the valve outside of its rated
design limits. Exceeding the design limits may cause haz-
ardous conditions including leakage of the process media
or rupture of the pressure boundary resulting in possible
process loss, equipment or environmental damage, or seri-
ous personal injury or death.
The specific product design data can be found on the valve's
serial plate, data sheet and the calculation sheet (in acc. to the
IEC 60534-7:2010).
The noise level emitted by control valves is always determined
by the operating data and the installation situation and is dif-
ferent for each application. There is no general typical value for
this. In any case, technical measures are used to try to keep
this below 80 dB(A). The individually expected pre-calculation
noise level can be found in the calculation data sheets.
The Valtek FlowTop handles a wide variety of general service
applications, while offering high flow capacity. All sizes come
standard with unbalanced trim; for high pressure drop appli-
cations optional pressure balanced trim is available for NPS
size 3 to 6.
The Valtek FlowTop consists of the body, bonnet, trim,
and actuator. The valve is designed with a high level of in-
terchangeability allowing the user to assemble the greatest
possible number of variations from a minimum number of
components to match each application. There are five bon-
net designs: standard bonnet or extended bonnet (either as
unbalanced or pressure balanced), and bellows seal bonnets.
The Valtek FlowTop is designed in compliance with EN
1349:2009 - Industrial Process Control Valves (DIN EN 1349
and VDE 0409-1349).
The Valtek FlowTop is designed for use in MODERATE and
WORLDWIDE environmental conditions. However, the inten-
ded use of the pneumatic actuators and the accessories is
limited by their permissible ambient temperature application
FCD VLEEIM1485-04 (EN/A4) November 2022
limits. When operated in the moderate range, a service life
of 7 to 10 years can be expected before servicing. Leaks can
occur at low temperatures (-60°C to -25°C), at high tempera-
tures permanent damage to the elastomers (+60°C to +80°C,
expected service life then < 1 year). Humidity up to 93% non-
condensing, air pollution up to 300 µg/m3 unless restricted
by accessories.
The product offering may include optional ancillary equip-
ment, such as positioners, air-filter regulators, solenoid
valves, limit switches or boosters. Digital, I/P, or pneumatic
positioners can be mounted directly, with a mounting bracket
or according to NAMUR standards. Refer to the relevant man-
ufacturer's user instructions for information regarding other
ancillary equipment.

3 Product Identification

Each Valtek FlowTop (V750 and V752) control valve comes
with an attached serial plate which includes key information
specifically for each control valve:
Figure 3: Serial Plate (WW-design, WorldWide)
Kennzeichnung
Tag.No.
Fabrikations Nr.
R
Serial No.
Made in Villach - Austria
Typ Gehaeuse / Atteste
DN PN/Class
Type Body / Certificate
Betriebstemperatur Kennlinie / Hub
max.
Working Temperature Characteristic / Stroke
Betriebsdruck fuer Antrieb
max. dp
Working Pressure for Actuator
Umgebungstemperatur
min. max.
Ambient Temperature
Figure 4: Serial Plate (EU-design, European Union)
The same serial number shown on the plate will appear on
all Valtek FlowTop data sheets, dimensional drawings, bills
of material, and spare parts lists. Other information located
on the serial plate is self-explanatory for the Valtek FlowTop
control valve.
You can download .pdf versions of the Valtek FlowTop docu-
mentation including a technical bulletin and user instructions
at www.flowserve.com. It is the user's responsibility to keep
this and related documentation on file and accessible for the
Valtek FlowTop product.

4 Valtek FlowTop Modification

Valtek FlowTop control valves are generally delivered as tested
and assembled units, with factory-mounted actuators.
Druecke sind Ueberdruecke
Pressures are gauge pressures
Kegel Sitz Innenteile Antrieb
Kvs / Cv
Plug Seat Trim Actuator
Zuluft
min. / max.
Supply
Federlaufbereich
Spring Range
Einbaulage Sicherheitsstellung
< 30°
Arrangement Failure Position
Besonderheiten
Specialities
flowserve.com
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