Disk Choke Gate Valves

TU 3741-001-49652808-2000

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

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