Disk Choke Gate Valves

ZDSh 65(50,100)-140(210,350)M

TU 3741-001-49652808-2000

Disk Choke Gate Valves  

Disk choke gate valve is intended for installation on the high pressure pipelines, X-mas and Injection trees. The unique feature of the design gives a number of advantages over gate valves with the “classical” design:

  • “opening-closing” is performed with the handle;
  • free inner space is minimal (gate revolves around its axe) and allows to perform opening-closing of the disk gate valve without preheating in low temperatures.

ZDSh connection sizes are equivalent to ZMS gate valves (there’s a possibility to make gate valves according to the Customer’s requirements).

Disk choke gate valve ZDSh is designed on the basis of the disk gate valve ZD with equivalent technical characteristics and it is equipped with quick-changing ceramic chokes with hole diameters 2,3,4,5,6,8,10,12 (any diameter according to the Customer’s order). It is intended for step control of the flow (technical water, oil and etc.) and is installed on the high pressure pipelines to replace choke block.

Use of ceramic chokes demonstrates their high-wearing feature and long life service.

Replacement of chokes in the disk choke gate valve is performed by one operator in 3-5 minutes in the closed position of the gate with no need of pressure release.

According to the special order disk choke gate valve can be equipped with a back pressure valve that prevents back flow.

Technical Characteristics

Composition of produced fluids Technical water; oil with СО2 and H2S up to 6 %; natural gas containing liquid hydrocarbons, ethyleneglycol, methanol (СН3ОН), turbine oils, water and mechanical particles
Temperature ranges, ºC -60…+45
Flowing fluid temperature, ºC Not to exceed 120
Leak tightness of the Gate, class, GOST R 54808-2011 A
Operating position Opened
Direction of flow Any
Location on the pipeline Any
Connection to the pipeline Flange
Total service life, years, not less than 15
Total average life, cycles, not less than 1800
Time to failure, cycles, not less than 600

Disk Choke Gate Valves

Technical Characteristics

Product Name Dn, mm. Pn, MPa (psi) L, mm D, mm D1, mm D2, mm n, pcs d, mm H, mm h, mm Modification
ZDSh 50,65 14(2000) 350 195 160 92 8 22 270 27 GOST 28919
21(3000) 90 40
35(5000)
50 14(2000) 295 165 127 82.5 8 19 255 34
21(3000) 371 215 165 95.2 25 280 46
35(5000)
65 21(3000) 422 245 190.5 107.9 28 295 50
80 14(2000) 359 210 168 123.8 8 23 318 40
21(3000) 435 242 190.5 123.8 25 334.5 46
35(5000) 473 265 208 136.5 32 347 56
100 21(3000) 511 292 235 149.2 8 32 402 53



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