Kobold VKP Specifications

Viscosity Compensated Plastic

Flowmeter and Switch

for Liquids

measuring

•

monitoring

•

analyzing

VKP

• Flow Ranges: 0.5...5 to 5...26 GPM (Water)

0.5...4.5 to 3...20 GPM (Oil)

• Temperature Max: 250 °F

• Pressure Max: 230 PSI

• ±5% Full Scale Accuracy

• 1" MNPT Fitting Standard

• Universal Mounting

• Direct Reading Scales for Oil or Water

KOBOLD companies worldwide:

ARGENTINA, AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHILE, CHINA, COLOMBIA,
CZECH REPUBLIC, EGYPT, FRANCE, GERMANY, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA,
MEXICO, NETHERLANDS, PERU, POLAND, REPUBLIC OF KOREA, ROMANIA, SINGAPORE, SPAIN,
SWITZERLAND, TAIWAN, THAILAND, TUNISIA, TURKEY, UNITED KINGDOM, USA, VIETNAM

01/01- 2014

KOBOLD Instruments, Inc.
1801 Parkway View Drive
Pittsburgh, PA 15205

Main Ofce:

1.800.998.1020

1.412.788.4890
[e-mail]
www.koboldusa.com

Viscosity Compensated Plastic Flowmeter and Switch Model VKP

Description

KOBOLD’s plastic VKP flowmeters and switches are used wherever
inexpensive flow measurement of liquids (eg. domestic services,
cooling water, lubrication systems, solar heating, etc.) is needed. The
VKP series offers a compact design with wetted parts of polysulfone
and stainless steel. The liquid flow rate is easily read at the upper edge
of the float. Its low cost and features also make the VKP series an ideal
choice for many OEM applications.

Specifications

Accuracy:
4000 & 5000 Series: ±5% of Full Scale
6000 Series: ±7% of Full Scale

Flow Media: Oil, Water and Other Liquids
Mounting: Universal, Without Recalibration
Measuring Principle: Float, Spring Loaded
Max. Temperature: 250 °F (185 °F Max. with Switch)
Max. Pressure: 230 PSI
Connections: 1" MNPT
Weight: 0.12 Lbs. (w/1" NPT Connections)
Wetted Materials
Housing: Polysulfone
Float: Polysulfone
Spring: 301 SS
Retaining Ring: PH 15-7 Mo SS
Sealing Gaskets: Klinger-SIL (Units w/Union Fittings)
Switch Contact: N/O Reed Contact, Bi-stable

Max. 40 W / 40 VA
Max. 230 VAC / VDC
Max. 2 A
(No Single Value to be Exceeded)
Electrical Connection: DIN 43 650 C w/Cable Gland

Dimensions

Order Details (Example: VKP-5018 N115)

Flowmeter with Water Scale Flowmeter with Oil Scale

Range

Water

(GPM)

0.5...5.0 0.45 VKP-4020 0.5...4.5 1.60 VKP-5018 2.0...8.0 0.75 VKP-6032

2.0...9.0 1.20 VKP-4035 0.5...8.0 3.65 VKP-5030 3.0...12 1.75 VKP-6045

2.0...13 3.80 VKP-4050 2.0...12 6.70 VKP-5045 4.0...18 4.95 VKP-6070

3.0...20 10.9 VKP-4080 3.0...20 11.6 VKP-5075 5.0...26 9.45 VKP-6100

5.0...26 6.60 VKP-4100

Suffix ..R = Adjustable Switch Contact VKP-4..., VKP-5... only
Suffix ..D = Inverted Flow Direction (e.g. Top to Bottom Flow)
Suffix ..N115 = 1/2" NPT, Male, Brass Union Fittings
Suffix ..FN115 = 1/2" NPT, Female, Brass Union Fittings
Suffix ..N120 = 3/4" NPT, Male, Brass Union Fittings
Suffix ..N215 = 1/2" NPT, Male, SS Union Fittings
Suffix ..FN215 = 1/2" NPT, Female, SS Union Fittings
Suffix ..N220 = 3/4" NPT, Male, SS Union Fittings

2

Press. Drop

Max.
(PSI)

Model

Range

Oil

(GPM)

Options (Add Suffix to Order Number)

Press. Drop

Max.
(PSI)

www.koboldusa.com

Model

Flowmeter for Contaminated Liquids

(Particle Size < 400µ)

Range

Water

(GPM)

Press. Drop

Max.
(PSI)

subject to change without prior notice.

Model

No responsibility taken for errors;