VRG CONTROLS LLC.
12 of 60
JUNE
2021
VPC “BV” SERIES VALVE PILOT CONTROLLERS
INSTRUCTION MANUAL
VPC “BV” SERIES VALVE PILOT CONTROLLERS
INSTRUCTION MANUAL
VRG Controls LLC.
12 of 54
APRIL 21, 2019
NOTES
1. Adjustment and Installation of VRG Controls equipment should be only
be performed by qualified personnel adequately trained and familiar with
products.
2. For technical assistance, please contact your local VRG Controls Sales
Representative or VRG Controls direct (www.vrgcontrols.com).
3. All values represent a starting point. Dynamic tuning with VPC in “live
control” will be necessary to optimize performance.
4. In this table, Pipeline Interconnects are defined >1.0 mile downstream
piping adjacent to control valve.
5. In this table, Close-Coupled System Applications are defined <1.0 mile
downstream piping adjacent to control valve.
6. Increasing number on the SUPPLY & EXHAUST ORIFICE will increase
the speed of response independently in each direction (faster reset rate).
Refer to VPC Application Schematic to determine which Adjustable Orifice
controls OPEN and CLOSE speed.
7. Increasing number on the “D” TANK ORIFICE will introduces a DERIVATIVE
function controls the RATE of OUTPUT. Larger DERIVATIVE number of “D”
TANK Adjustable Orifice introduces more dampening of the OUTPUT.
8. If stable control is achieved upon adjusting the VPC per the above
guidelines, the deadband may be reduced (smaller number on Sensitivity
Adjusting Drum). For dynamic systems, do not reduce deadband to less
than “ZERO” as defined in Initial Adjustment Procedures.
9. If system is unstable upon adjusting VPC per above guidelines, corrective
adjustment to INCREASE CLOSING speed and REDUCE OPENING speed are
suggested. Additionally, the deadband may be increased (larger number on
Sensitivity Adjusting Drum).
10. Top row - Worker // Bottom Row - Monitor
TA
BL
E 9.0
VPC
INITIAL
AD
JUS
TMENT
PR
OCEDURE
SUMMAR
Y
(SINGLE
A
CTING
VPC
)
Recommened VPC Model
VPC-SA-BV
N
N
VPC-SA-BV-ID
Y
N
VPC-SA-BV-ID
N
Y
VPC-SA-BV
N
Y
VPC-SA-BV-ID
N
N
VPC-SA-BV-ID
Y
N
VPC-SA-BV-ID
N
Y
VPC-SA-BV-ID
N
Y
VPC-SA-BV-ID
Y
N
VPC-SA-BV-ID
N
Y
VPC-SA-BV-ID
N
Y
VPC-SA-BV-ID
Y
N
VPC-SA-BV-ID
N
Y
VPC-SA-BV-ID
N
Y
VPC-SA-BV-ID
N
N
L6
L6
N/A
0
L6
L6
N/A
-1/4
S3
S3
S3
0
S6
S3
S2
0
S3
S3
S3
+1/4
S5
S3
S2
0
S3
S3
S3
+1/4
S5
S3
S2
0
M6
M6
N/A
0
L6
L6
N/A
-1/4
S3
S3
S3
+1/8
S5
S3
S2
0
S3
S3
S3
+1/4
S5
S3
S2
0
S3
S3
S3
+1/4
S5
S3
S2
0
S4
S3
S2
0
S6
S3
S2
0
S4
S3
S2
+1/4
S6
S3
S2
0
S4
S3
S2
+1/4
S5
S3
S2
0
S4
S3
S2
+1/8
S5
S3
S2
0
S4
S3
S2
+3/8
S5
S3
S2
0
S4
S3
S2
+3/8
S5
S3
S2
0
L6
L3
S2
0
L6
L3
S2
-1/4
Ball V
alv
e
Globe
V
alv
e
DA Actua
tor
SR Actua
tor
Volume
Boos
ter
Pne
uma
tic
Positione
r
Close Orifice
Ope
n Orifice
D T
ank Orifice
Dead Band
APPLICA
TION
PIP
ELIN
E IN
TER
CON
NE
CT
PO
WERPLAN
T/IN
DUS
TRIA
L SERIE
S
CL
OSE
-C
OUPLED S
YS
TEMS
-ID
