DBX type of Blind valve has good advantages in Oil terminal & offshore applications where is limited installation space and marine pollution is strictly prohibited.

The full enclosed body & compact design prevents ground pollution and it allows to install at parallel pipe lines.

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* Zoekterm: scheepvaart, marine, line blind, BOXY
SDX Type special blind valve has developed for the requirement of isolation under pressure.


Open/close position can be changed with soft seals (special sealing kids) achieve positive isolation of liquid / gas fluids without depressurize the pipe line.

Dual gear-set actuator allows no friction during operation and soft seal can make perfect isolation.

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* Zoekterm: scheepvaart, marine, line blind, BOXY
Boxy developed innovative BOXY BLIND VALVE to replace existing blank, spectacle plate, DBB(Double Block and Bleed) valve and spool piece without pipe revision for the first in the world.

* No need pipeline revision to replace existing isolation method (Typical valve (+Blank),Spool piece etc.)
* Positive shutoff with quick change
* No ground pollution
* Safe working
* No need tools, gaskets, cranes etc
* Untrained one person with handwheel operation
* Minimum maintenance
* No line spreading

* Zoekterm: scheepvaart, marine, line blind, BOXY
Total equipment isolation valves cannot gaurantee 100% leakage free.

Leakage trouble may cause big loses of industrial equipment such as contamination of fluid mixing, personal accident by inhalation of toxic gases or unexpected explotion that leads to occasionally huge disatser.

Typical blank work have been had actual problems at site as follows:

* Environment pollution during blinding work
* Exposure to hazard of toxic fluid to worker
* Potential hazard of sparking
* Need tools, gasket, cranes etc
* In need of Specialist or trained worker
* High labor cost
* Long total shutoff time

* Zoekterm: scheepvaart, marine, line blind, BOXY
EX Type blind valve offers 100% isolation for severe service with extrem temperature and pressure /or cryogenic (-196?) application.

Sample picture shows an application at 1500F(816?) 2500 LBS, DN 500

No internal gasket with simple structure minimize contact surface with extream media and unique spreading mechanism make a gap to switch blind plate position in a short time.

Strong torque for tighteness with solid structure enable to isolate severe pipeline with safe.

Only gasket replacement of blind plate is needed for maintenance.

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* Zoekterm: scheepvaart, marine, line blind, BOXY
SBX type Blind valve has good advantages in gaseous fluid or critical pipeline with acid, flamable, toxic or carcinogenic media.


The full enclosed body & compact design prevents environmental pollution and it allows to install at parallel pipe lines.

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* Zoekterm: scheepvaart, marine, line blind, BOXY

BOXY BLIND VALVE – Perfect isolation system

BOXY BLIND VALVE Co.,Ltd
We focused on only line blocking technology for over 20 years.

Lots of installation reference and site experiences with BOXY’s innovative isolation blinding system proved as a most safe and
practical method among all of piping isolation facilities in the world.

Simple design with easy operation is the technology of BOXY that comes from long term experience and development.
also solid structure with minimum maintenance is the strong point of BOXY.

As a specialist with most advanced technology for pipe line isolation we promise you provide qulified product and service to meet your need at site.

Company Philosophy

  • Best quality material & product
  • Best service and quick answer
  • Best reputation from global customers

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