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DZ41H/Y/F LOW TEMPERATURE VALVE

Qiaofa Machinery Manufacturing Co., Ltd., as an industry-leading steam system solutions expert, is committed to providing customers with premium DZ41H/Y/F LOW TEMPERATURE VALVE products and professional services. With mature production processes and a comprehensive technical support system, we offer precise product selection recommendations and customized solutions tailored to actual operating conditions.

We adhere to customer-oriented principles and drive innovation through technology, providing comprehensive services from product selection to technical consultation, helping enterprises enhance steam system efficiency and create greater value.

Detailed Introduction

Product features

1. To prevent abnormal pressure rise in the middle chamber, a pressure relief hole is installed on the inlet side of the gate plate

2. Determine the top length of the valve cover based on the operating temperature of the valve to ensure reliable sealing of the valve stem packing

3. Reasonably select materials for fillers, gaskets, and other parts based on the working temperature

4. Strictly control the chemical composition and mechanical performance indicators such as low-temperature impact toughness of materials

5. Adopting various piping flange standards and sealing surface types, suitable for various engineering needs.

6 Low temperature gate valves are suitable for low-temperature media such as methane, liquid natural gas, hexene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, liquid hydrogen, etc

Product advantages

1. The fluid resistance is small, and the sealing surface is less eroded and scoured by the medium.

2. It is easier to open and close.

3. The medium flow direction is not restricted, does not cause turbulence and does not reduce pressure.

4. The shape is simple, the structural length is short, the manufacturing process is good, and the application range is wide.

Execution standard

设计与制造	结构长度	法兰尺寸	压力-温度	试验-检验
JB/T7749	GB12221	JB79	GB9131	JB/T9092

Pressure test

公称压力PN	1.6	2.5	4.0	6.4	10.0
强度试验	2.4	3.8	6.0	9.6	15.0
水密封试验	1.8	2.8	4.4	7.0	11.0
上密封试验	1.8	2.8	4.4	7.0	11.0
气密封试验	0.4-0.7

Major parts material and the performance

体盖板	阀杆	密封面	垫片	填料	工作温度	适用介质
ZGoCrMNVAI低温高压铸钢	1Cr7Ni12	STL/STL	PTFE/柔性石墨 PTFE/金属缠绕垫	PTFE	-46	丙烷/炳烯甲醇/乙烷煤气/液氨
LCB
ZGoCrMNVAI低温高压铸钢					-60
LC1
ZGoCrMNVAI低温高压铸钢					-73
LC2
ZGoCrMNVAI低温高压铸钢	1Cr18Ni9Ti				-101
LC3
ZGoCrMNVAI低温高压铸钢					-115
LC4
ZGoCrMNVAI低温高压铸钢					-196
CF8

Main external and connection dimension

PN16(MPa)

DN	L	D	D1	D2	b	n-φd	H	DO
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-Φ26	1180	400
250	450	105	355	320	30	12-φ30	1390	450
300	500	460	410	375	30	12-Φ30	1620	500
350	550	520	470	435	34	16-Φ34	1810	500
400	600	580	525	485	36	16-Φ36	1970	550

PN25(MPa)

DN	L	D1	D1	D2	b	N-Φd	H	DO
20	150	105	75	55	16	4-Φ16	320	140
25	160	115	85	65	16	4-φ16	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-φ20	540	240
65	265	180	145	125	22	8-φ22	510	240
80	280	195	160	135	22	8-Φ22	690	280
100	300	230	190	160	24	8-φ24	780	300
125	325	270	220	188	28	8-φ28	930	300
150	350	300	250	218	30	8-φ30	980	320
200	400	360	310	278	34	12-Φ34	1180	360
250	450	425	370	332	36	12-Φ36	1390	400
300	500	485	430	390	40	16-440	1620	450
350	550	550	490	448	44	16-44	1810	500
400	600	610	550	505	48	16-48	1990	560

PN40(MPa)

DN	L	D	D1	D2	D6	b	N-φd	H	Do
20	150	105	75	55	51	16	4-Φ14	330	140
25	160	115	85	65	58	16	4-φ14	360	160
32	180	135	100	78	66	18	4-φ18	440	180
40	200	145	110	85	76	18	4-φ18	455	200
50	250	160	125	100	88	20	4-φ18	575	240
65	380	180	145	120	110	22	4-Φ20	635	240
80	3103	195	160	135	121	22	8-φ22	715	280
100	50	230	190	160	150	24	8-Φ22	815	300
125	400	270	220	188	176	28	8-φ24	965	360
150	450	300	250	218	204	30	8-φ28	1025	400
200	550	375	320	282	160	38	8-φ30	1225	450
250	650	445	385	345	313	42	12-φ34	1440	560
300	750	510	450	408	364	46	16-φ34	1665	5470
350	850	570	510	465	422	52	16-φ41	1880	720
400	950	655	585	535	474	58	16-Φ18	2050	800

PN64(MPa)

DN	L	D	D1	D2	D6	b	N-φd	H	Do
20	190	125	90	68	51	20	4-φ18	330	180
25	210	135	100	78	58	22	4-φ23	360	180
32	230	150	110	82	66	24	4-Φ23	410	180
40	240	165	125	95	76	24	4-φ23	480	220
50	250	175	135	105	88	26	4-φ23	585	240
65	280	200	160	130	110	28	8-φ23	690	240
80	310	210	170	140	121	30	8-φ23	745	280
100	350	250	200	168	150	32	8-Φ25	885	300
125	400	295	240	202	176	36	8-φ30	985	360
150	450	340	280	240	204	38	8-Φ34	1050	400
200	550	405	345	300	260	44	12-φ34	1240	450
250	650	470	400	352	313	48	12-φ41	1460	560
300	750	530	160	412	364	54	16-Φ41	1670	5640

DZ41H/Y/F LOW TEMPERATURE VALVE

DZ41H/Y/F低温闸阀