Bohai Drilling Co., Ltd. has successfully researched and developed Dema Chromatographs through intensive research. In recent days, four vehicle-mounted gas detectors equipped with Dema series chromatographs have been officially employed.

The Dema series chromatograph independently developed by Bohai Drilling Co., Ltd. has begun mass production, and the core components of the Dema integrated logging unit are about to get rid of imports.

Chromatography is one of the core components of Bohai Drilling Dema comprehensive logging equipment and has always depended on imports, which greatly limits the production, sales and maintenance of the instrument. In the past, the state parameters of the chromatograph were directly indicated less, most of the parameters needed to be measured with the instrument, and the error was very large. The operator was required to have rich field experience, the operation process was time-consuming and laborious, and the error was easily generated. The newly-developed Dema series chromatograph has broken through the traditional analysis and control system using two technologies: tie rod valve and rotary valve. It has developed a series of technologies that do not require high-pressure motive gas, have a theoretical life of more than 50 million times, a small volume of 50%, and a faster reaction speed. The electromagnetic control valve of the road realizes a sensitivity of 5PPM, and a rapid analysis of the analysis cycle of 30 seconds, using 15 seconds less than before. Means that it has reached the international level of similar products.

On December 1st, Bohai drilled four on-board gas measuring instruments equipped with Dema series chromatographs to reach the Changqing market and formally took posts. This indicates that the Demar series chromatograph independently developed by Bohai Drilling Co., Ltd. has achieved mass production and changed the history of the importation of the core components of the Dema Integrated Logging System.

Chromatography is one of the core components of Bohai Drilling Dema comprehensive logging equipment and has always depended on imports, which greatly limits the production, sales and maintenance of the instrument. In the past, the state parameters of the chromatograph were directly indicated less, most of the parameters needed to be measured with the instrument, and the error was very large. The operator was required to have rich field experience, the operation process was time-consuming and laborious, and the error was easily generated.

In response to these problems, Bohai Drilling Co., Ltd., through intensive research, successfully developed the Dema series of chromatographs, and broke through the traditional analysis and control system using two technologies, namely rod valve and rotary valve, and developed a technology that does not require high-pressure motive gas and has a theoretical life of more than 50 million times. The 50% smaller, faster response multi-channel electromagnetic control valve realizes a sensitivity of 5PPM, a rapid analysis cycle of 30 seconds, and 15 seconds less than before. Field tests show that Dema Chromatograph has reached the level of similar products in the world.

Forged Steel Globe Valves are Bolted Bonnet, outside screw and yoke type, Rising Spindle construction. Nivz Forged Valves Body and bonnet made from high quality forgings.

ZC offer Forged Steel Globe Valves in size 1/2" (DN15) to 2" (DN50) to suit various critical, non-critical applications and pressure rating in 800 class.

Manufacturing range covers Regular Port and Standard Port both types of Valve. Regular Port globe valves have fast delivery or ready stock, for Standard Port Globe Valve do manufacturing on order basis,wide range of Body Materials like ASTM A 105 - Forged Carbon Steel, ASTM A 182 F 304/304L/316/316L - Forged Stainless Steel 304/304L/316/316L, ASTM A 182 F 11/22 - Alloy Steel to suit industrial application.

Available under any Third party inspection also. For High Pressure & Temperature application Stellited F6 Face Seat & Disc available. Forged Globe Valve available is Threaded End, Socket Weld End, Butt Weld End and Flanged End Connection. For Flanged End Forged Steel Globe Valve flanges will be a welded with a valve body not integral forged.

Features

  • Body & Bonnet made from high quality forging.
  • The Forgings are precision machined for high performance
  • Leak Proof Body-Bonnet Joint With Spiral Wound Gasket
  • Ground Finish Stem
  • Self Aligning Two Piece Gland
  • Back seating feature facilitates repacking of the stuffing box on line with the valve in fully open position.

Standards

Design Standard:BS 5352 / API 602 / ASME B 16.34

Inspection & Testing Standard:BS EN ISO 12266 - I (BS 6755 - I) / API 598

Flange To Flange Distance:As Per ANSI B 16.10 / BS 5352 / API 602

End Connection:Flanged End to ANSI B 16.5, DIN Standard / JIS Standard / IS Standard

Screwed - Threaded End to ANSI B 1.20.1

Socket Weld End to ANSI B 16.11

Butt Weld End to ANSI B 16.25

Manufacturing Size Range:1/2" (DN15) to 2" (DN50)

Pressure Rating of Valve:Class 8000LB~1500LB

Valve Operation: Hand Wheel Operated

Valve Seat Leakage:Leakage Class IV


Forged Steel Globe Valve

Flowserve Globe Valve, Silent Globe Check Valve, Regulating Globe Valve, Globe Style Silent Check Valve

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