TPT September 2016

45 / 120

September 2016 43
T E CHNOLOG Y
Easy and safe connection
of measuring and display
devices
IN addition to flow, pressure is the most
relevant parameter and measuring
factor in hydraulics. Measuring system
pressure is therefore the most important
and most frequently used method for
monitoring, controlling and preventive
service and maintenance of hydraulically
operated machines and systems, and
is a prerequisite for their economical
operation.
Test couplings from the Stauff Test
range are planned during the design
phase of a machine and installed in
suitable positions in the hydraulic
system at the factory. They allow
machine operators and maintenance
personnel to easily and safely connect
analogue and digital measuring and
display devices for the temporary or
continuous testing of system pressure
and other factors.
If required, they also allow venting
of the system as well as collecting
representative fluid samples, eg for
analysing the degree of contamination
of the fluid. This type of connection
requires no tools and can also be carried
out during operation under full system
pressure up to 630 bar (depending on
the type of coupling).
The check valve (ball or poppet valve)
integrated into the test coupling opens
only after connection of the hydraulic
tester with suitable adapters or hoses.
This ensures safe sealing of the
connection without leakage or danger of
fluids escaping from the system.
Stauff test couplings are not
crimped after insertion of the internal
valve components and seals, but are
closed with a threaded nipple in a fully
automated process. Not only does
this design contribute to precision and
process reliability in production, it also
secures the proper functioning of the
couplings. The vibration protection, which
prevents a self-acting detachment of the
protective metal cap through vibrations in
the system, is another advantage.
For the finishing of the test coupling
range in carbon steel, Stauff relies on
the zinc/nickel surface coating, which
provides more than 720 hours of
resistance against red rust/base metal
corrosion in the salt spray chamber
in line with DIN EN ISO 9227. The
chromium(VI)-free coating exceeds
the highest requirements with regard
to resistance and durability and also
complies with the valid ELV, REACH
and RoHS guidelines.
Versions in stainless steel V2A and
V4A are generally available from stock.
Alternative materials and surfaces are
available on request.
Walter Stauffenberg GmbH & Co KG
– Germany
Fax: +49 2392 2505
Email:
Website:
Featuring:
• CNC Pipe Benders up to 10”
• BendPro CNC
• Overhead Clamp
• In-House Tooling
• Made in the US A
12” 3D!
Benders • Tooling • Parts • Service
| tel 253/922-7433 | fax 253/922-2536 |
8” 20D!
Powerful
Pipe Benders
“Click on Pipe Benders”
Cross section of
a male stud test
coupling SMK
with integrated
ball valve from
the Stauff Test 20
The entire range of measuring equipment
from Stauff, including test couplings and
adaptors