 |
Double
Shut-off Coupling (Hydraulic Coupling)
As
the lines get shut-off at both ends on disconnection they are
known as double shut-off or hydraulic couplings. These couplings
are with self-sealing valves both at the coupler and adapter.
|
These
valves provide sealing of the media on disconnection without
any media loss and fluid looking thus Unitread Double Shut-off
couplings positively seal both ends of the line when the coupling
is disconnected.
These couplings are provided with spring activating the valves
in both coupler and adaptor. When connected, complete seal is
effected by compression of 'O' ring. |
| Operation
: To connect, merely pull back the sleeve and push the adaptor
into the coupler. To disconnect, pull back the sleeve, unlocking
coupling and sealing both ends of the line. These are designed
for pressure upto 200Kg/cm2 (3000 PSI) with positive locking,
least flow resistance and minimum pressure drop and are manufactured
out of special steels to give maximum life. |
| Double
Shut-off Coupling |
| Series
: DV200 |
| Typical
applications : Hydraulic systems, vacuum, steam, oil, air,
chemical and petrochemical industries, aerospace etc. |
|
Features
: Minimum air inclusion and apilage
- Maximum
flow rate
- Precision
walls, provides positive fluid seal. Opens only when adaptor
is firmly locked in the coupler.
- Seal
versatility, wide choice of standard and special seals,
materials enable the DV-200 series to handle great variety
of fluids.
|
| Sizes
: 1/4 to 2 |
| Material
: Hardened Steel, EN8, Brass, SS304, SS316 |
|
Working
Pressure :
- Upto
200 Kg/cm2 (3000 PSI)
- Safe
pressure 45000 PSI.
- Failure
pressure 7500 PSI.
|
| End
Connections : BSP Female Threads |
| Seals
: Nitrile, Neoprene, Silicon and Viton etc. |
| Shut-off
Combination : Double shut-off |
| Installation
of coupling : To be shown with photographs. |
| Double
Shut-off Coupling |
| Series
: DV-700 |
| Introduction
: These are special double shut-off couplings for hydraulic
duty condition upto 700 Kg/cm2 (10000 PSI) ideally suitable
for high pressure hydraulic circuits. The DV-700 series is not
simple modified version of another coupling series but has been
designed and constructed specifically for high pressure hydraulic
application. The DV-700 series has proved a record of reliability
on tough hydraulic test stand applications where high pressurisation
is a must. |
| Typical
Application : High pressure hydraulic application, ideal
for test stands and applications where cleanliness is required,
permits easy tool changeover, oil fields, off-shored drilling,
cranes, power tools etc. |
|
Features
:
- Heavy
duty construction
- Superior
flow characteristics
- Low
pressure drop
- Push
to connect
- Teflon
supporting ring is provided to have longer seal life.
|
| Sizes
: 1/4" to 1" |
| Material
: Carbon Steel |
|
Working
Pressure :
- Upto
700 Kg/cm2 (10000 PSI)
- Safe
pressure 12500 PSI
- Failure
pressure 15000 PSI
|
| End
connections : BSP Female Threads |
| Seals
: Nitrile, Viton etc. |
| Shut-off
Combination : Double shut-offs |
