Scope Of Manual; Intended Use; Valtek Vr Modification; Safety - Flowserve Valtek VR User Instructions

1. Scope of Manual

The following information covers the Valtek VR.
For Valdisk, MaxFlo and ShearStream valves

Size 25 Square inches

Size 50 Square inches

Size 100 Square inches

Size 200 Square inches
Comes with or without ancillary equipment

2. Intended Use

Valtek
designed
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 intended
application. Do not use the valve assembly outside of its
rated pressure / temperature limits. Exceeding the design
limits may cause hazardous conditions including leakage of
the process media or rupture of the pressure boundary
resulting in possible process loss, equipment or
environmental damage, or serious personnel injury or death.
The Valtek VR handles a wide variety of general service
applications.
The Valtek VR consists of the cylinder, transfer case, yoke and
connecting parts. The actuator is designed with a high level of
interchangeability allowing the user to assemble the greatest
possible number of variations from a minimum number of
components to match each application. There are two fail safe
positions, close or open, without or with handwheel.
The Valtek VR is designed for use in MODERATE and
WORLDWIDE environmental conditions, ambient temperature
range -40°F to 350°F (-40°C to +177°C) and pressures up to 150
psi (10.3 bar) for sizes VR25, VR50, VR100 and 80 psi for VR200
(5.5 bar), unless restricted by the accessories. The product
offering may include optional ancillary equipment, such as
positioners, air-filter regulators, solenoid valves, limit switches or
boosters. Digital, I/P, or pneumatic positioners can be mounted
with a mounting bracket. Refer to the relevant manufacturer's
user instructions for information regarding other ancillary
equipment.
VLAIM031-14 (EN/AQ) May 2023
.
VR are pressure vessels
and rated for specific
Valtek VR Spring Cylinder Rotary Actuators

3. Valtek VR Modification

The Valtek VR actuators are generally delivered as tested and
assembled units.
Unauthorized modification of the Valtek VR
actuator voids the product test certification and
product warranties, could drastically affect
product performance, and could be hazardous to
personnel and equipment.
Before Valtek VR re-use, all necessary
tests must be repeated and recorded in
compliance with all test routines, guidelines, and
engineering standards.

4. Safety

Safety terms – DANGER, WARNING, CAUTION and NOTICE -
are used to highlight specific dangers and / or provide additional
information that may not be readily apparent in the User
Instructions.
DANGER Indicates that death, severe
personnel injury and/or substantial
property damage will occur if proper precautions are not
taken.
or
death, and substantial property damage can occur if proper
precautions are not taken.
CAUTION Indicates that potential injury
(minor or moderate) else equipment
damage can occur if proper precautions are not taken.
NOTICE indicates practices or provides
additional technical information.

5. Design

5.1 Spring

Valtek VR actuators are available in below listed spring
configurations.
1. VR25, VR50 are available in the standard and
extended spring configurations.
2. VR100, VR200 are available in standard and dual
spring configurations.
WARNING indicates that
severe personnel injury,
Page 4 of 13