Cryogenic Gate Valve

Technical Parameters

Product model: DZ41Y/W
Nominal pressure: PN1.6~2.5Mpa
Nominal diameter: DN15~800mm
Main materials: LCB, LF1, LF3, LC3, CF8, F304, etc
Applicable temperature: -45 ℃~196 ℃
Design and manufacturing: JB/T 7749-95
Structure length: GB/T 12221-1989
Flange connection: JB/T 79-1994
Inspection and testing: JB/T 9092-1999

Product Details

Product Overview

Body & Bonnet: integrated stainless steel forging or casting, with excellent strength and anti-cryogenic property.

Stem: forging XM-19 or Inconel 718 material, it was anti-abbrasive and anti-scuffing after nitrating treatment.

Sealing: STL material, with the property of anti-abbrasive, anti-rusty and anti-cryogenic.

Drip Plate: effectively stop the condensate water flow into insulating layer.

Stem Nut: C95200, with better chemical property and smooth turning.

Fastners: all the fastners are fully threaded type under cryogenic temp. it is effectively avoid fastners long deformation and sealing failed.

Back Seat: all back seat are designed near to the packing bottom.

Packing: compound packing sealing construction, effectively reduced the torque of opening and closing.

Uni-directional flow: vent hole in disc, to avoid cavity pressure rising.

Clean: all the cryogenic valves are oil-degreased before assembling.

Main overall connection dimensions

model	DN	L	D	D1	D2	b	n-Φd	H	D0
1.6MPa raised face flange RF DZ41（0）Y-16LCB DZ41（0）Y-16LC1 DZ41（0）Y-16LC2 DZ41（0）Y-16LC3 DZ41（0）Y-16LC4 DZ41（0）Y-16P DZ41（0）Y-16R	20	150	105	75	55	14	4-Φ14	320	140
	25	160	115	85	65	14	4-Φ14	350	160
	32	180	135	100	78	16	4-Φ18	385	180
	40	200	145	110	85	16	4-Φ18	420	220
	50	250	160	125	100	16	4-Φ18	540	240
	65	265	180	145	120	18	4-Φ18	610	240
	80	280	195	160	135	20	8-Φ18	690	280
	100	300	215	180	155	20	8-Φ18	780	300
	125	325	245	210	185	22	8-Φ18	930	320
	150	350	280	240	210	24	8-Φ23	980	350
	200	400	335	295	265	26	12-Φ23	1180	400
	250	450	105	355	320	30	12-Φ25	1390	450
	300	500	460	410	375	30	12-Φ25	1620	500
	350	550	520	470	435	34	16-Φ25	1810	500
	400	600	580	525	485	36	16-Φ30	1970	550
2.5MPa raised face flange RF DZ41（0）Y-25LCB DZ41（0）Y-25LC1 DZ41（0）Y-25LC2 DZ41（0）Y-25LC3 DZ41（0）Y-25LC4 DZ41（0）Y-25P DZ41（0）Y-25R	20	150	105	75	55	16	4-Φ14	320	140
	25	160	115	85	65	16	4-Φ14	350	160
	32	180	135	100	78	18	4-Φ18	385	180
	40	200	145	110	85	18	4-Φ18	420	200
	50	250	160	125	100	20	4-Φ18	540	240
	65	265	180	145	120	22	8-Φ18	510	240
	80	280	195	160	135	22	8-Φ18	690	280
	100	300	230	190	160	24	8-Φ23	780	300
	125	325	270	220	188	28	8-Φ25	930	300
	150	350	300	250	218	30	8-Φ25	980	320
	200	400	360	310	278	34	12-Φ25	1180	360
	250	450	425	370	332	36	12-Φ30	1390	400
	300	500	485	430	390	40	16-Φ30	1620	450
	350	550	550	490	448	44	16-Φ34	1810	500
	400	600	610	550	505	48	16-Φ34	1990	560

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