低溫閘閥結(jié)構(gòu)緊湊、體積小、剛性好、安全可靠。關(guān)閉件（閘板）采用彈性結(jié)構(gòu)，在工作中能自動(dòng)補(bǔ)償由于異常負(fù)荷或溫度引起的閥體變形。因此，密封可靠，并且不會(huì)產(chǎn)生閘板楔死。閥座可為更換式閥座，可以任意組合與關(guān)閉件密封面材質(zhì)的配對(duì)，以滿足工況要求，延長使用壽命
低溫閘閥的種類 ,按密封面配置可分為楔式閘板式閘閥和平行閘板式閘閥 , 楔式閘板式閘閥又可分為:單閘極式、雙閘板式和彈性閘板式；平行閘板式閘閥可分為單閘板式和雙閘板式。按閥桿的螺紋位置劃分，可分為明桿閘閥和暗桿閘閥兩種。
開啟閥門時(shí)，當(dāng)閘板提升高度等于閥門通徑的1：1倍時(shí)，流體的通道*暢通，但在運(yùn)行時(shí)，此位置是無法監(jiān)視的。實(shí)際使用時(shí)，是以閥桿的頂點(diǎn)作為標(biāo)志，即開不動(dòng)的位置，作為它的全開位置。為考慮溫度變化出現(xiàn)鎖死現(xiàn)象 , 通常在開到頂點(diǎn)位置上 , 再倒回 1/2－1圈 , 作為全開閥門的位置
的安裝與維護(hù)應(yīng)注意以下事項(xiàng)：
（1）手輪、手柄及傳動(dòng)機(jī)構(gòu)均不允許作起吊用，并嚴(yán)禁碰撞。
（2）雙閘板閘閥應(yīng)垂直安裝（即閥桿處于垂直位置 , 手輪在頂部 ）。
（3）有旁通閥的閘閥在開啟前應(yīng)先打開旁通閥（以平衡進(jìn)出口的壓差及減小開啟力 ）。
（4）帶傳動(dòng)機(jī)構(gòu)的閘閥，按產(chǎn)品使用說明書的規(guī)定安裝。
（5）如果閥門經(jīng)常開關(guān)使用 , 每月至少潤滑一次。
的主體材料及尺寸
主要零件材料及性能規(guī)范
主要零部件
閥體
閥蓋
碳鋼
鉻鎳鈦不銹鋼
鉻鎳鉬鈦不銹鋼
超低碳不銹鋼
鉻鉬合金鋼
低溫碳鋼
閘板
閥座
碳鋼堆焊硬質(zhì)合金或不銹鋼
鉻鎳鈦不銹鋼
堆焊硬質(zhì)合金
鉻鎳鉬鈦不銹鋼
堆焊硬質(zhì)合金
超低碳不銹鋼
鉻鉬合金鋼
堆焊硬質(zhì)合金
不銹鋼堆焊硬質(zhì)合金
閥桿
鉻不銹鋼
鉻鎳鈦不銹鋼
鉻鎳鉬鈦不銹鋼
超低碳不銹鋼
鉻鉬合金鋼
不銹鋼
填料
石墨石棉盤根
浸聚四氟乙烯石棉盤根
柔性石墨石棉盤根
浸聚四氟乙烯石棉盤根
墊片
石棉墊片
不銹鋼帶四氟乙烯纏繞墊片
柔性石墨+不銹鋼
聚四氟乙烯
閥桿螺母
高鎳球鐵/ZguAL10Fe3
主要參數(shù)
適用介質(zhì)
水、蒸汽、油品
硝酸類
醋酸類
尿素、甲銨液等
水、蒸汽、石油及石油產(chǎn)品
氨氣、液氨
適用溫度℃
≤425
≤200
≤200
≤200
≤550
-45～150
型號(hào)
公稱
主要結(jié)構(gòu)尺寸（mm）
閥體
材料
性能規(guī)范
通徑 DN（mm）
壓力 PN（MPa）
D
D0
L
H
適用溫度（℃）
適用介質(zhì)
SFD46Z-40C150C
1/2"
150
89
140
108
345
LCB
≥-46
NH3、丙烷
"
3/4"
"
98
150
117
355
"
"
"
"
1"
"
108
150
127
454
"
"
"
"
2"
"
152
200
178
481
"
"
"
"
3"
"
190
230
203
574
"
"
"
"
4"
"
229
280
229
708
"
"
"
"
6"
"
279
330
267
946
"
"
"
"
8"
"
343
380
292
1118
"
"
"
"
10"
"
406
460
330
1312
"
"
"
"
12"
"
483
510
356
1547
"
"
"
"
14"
"
533
560
381
1811
"
"
"
"
16"
"
597
560
406
2002
"
"
"
"
18"
"
635
610
432
2256
"
"
"
"
20"
"
698
760
457
2532
"
"
"
"
24"
"
813
810
508
3000
"
"
"
SFD101Z-40C150C
1/2"
150
89
140
108
405
LC3
≥-101
乙烯等
"
3/4"
"
98
150
117
415
"
"
"
"
1"
"
108
150
127
514
"
"
"
"
2"
"
152
200
178
591
"
"
"
"
3"
"
190
230
203
634
"
"
"
"
4"
"
229
280
229
768
"
"
"
"
6"
"
279
330
267
1006
"
"
"
"
8"
"
343
380
292
1128
"
"
"
"
10"
"
406
460
330
1372
"
"
"
"
12"
"
483
510
356
1607
"
"
"
"
14"
"
533
560
381
1871
"
"
"
"
16"
"
597
560
406
2062
"
"
"
"
18"
"
635
610
432
2316
"
"
"
"
20"
"
698
760
457
2592
"
"
"
"
24"
"
813
810
508
3060
"
"
"
SFD196Z-40C150P
1/2"
150
89
140
108
405
ZGOCr18Ni9
≥-196
液氨、乙烯、液化天然氣等
"
3/4"
"
98
150
117
415
"
"
"
"
1"
"
108
150
127
514
"
"
"
"
2"
"
152
200
178
591
"
"
"
"
3"
"
190
230
203
634
"
"
"
"
4"
"
229
280
229
768
"
"
"
"
6"
"
279
330
267
1006
"
"
"
"
8"
"
343
380
292
1128
"
"
"
"
10"
"
406
460
330
1372
"
"
"
"
12"
"
483
510
356
1607
"
"
"
"
14"
"
533
560
381
1871
"
"
"
SFD196Z-40C150P
16"
150
597
560
406
2062
ZGOCr18Ni9
≥-196
液氨、乙烯、液化天然氣等
"
18"
"
635
610
432
2316
"
"
"
"
20"
"
698
760
457
2592
"
"
"
"
24"
"
813
810
508
3060
"
"
"
SFD46Z-540C150C
16"
150
597
560
406
2002
LCB
≥-46
NH3、丙烷
"
18"
"
635
610
432
2256
"
"
"
"
20"
"
698
760
457
2532
"
"
"
"
24"
"
813
810
508
300
"
"
"
SFD101Z-540C150C
16"
150
597
560
406
2062
LC3
≥-101
乙烯等
"
18"
"
635
610
432
2316
"
"
"
"
20"
"
698
760
457
2592
"
"
"
"
24"
"
813
810
508
3060
"
"
"
SFD196Z-540C150P
16"
150
597
560
406
2062
ZGOCr18Ni9
≥-196
液氨、乙烯、液化天然氣等
"
18"
"
635
610
432
2316
"
"
"
"
20"
"
698
760
457
2592
"
"
"
"
24"
"
813
810
508
3060
"
"
"
SFD46Z-40C300C
1/2"
300
LCB
≥-46
NH3、丙烷
"
3/4"
"
"
"
"
"
1"
"
"
"
"
"
2"
"
165
230
216
501
"
"
"
"
3"
"
210
280
283
603
"
"
"
"
4"
"
254
330
305
727
"
"
"
"
6"
"
318
380
403
969
"
"
"
"
8"
"
381
460
419
1175
"
"
"
"
10"
"
444
510
457
1426
"
"
"
"
12"
"
521
510
502
1611
"
"
"
"
14"
"
584
560
762
2014
"
"
"
"
16"
"
648
610
838
2230
"
"
"
"
18"
"
"
"
"
"
20"
"
"
"
"
"
24"
"
"
"
"
SFD101Z-40C300C
1/2"
300
LC3
≥-101
乙烯等
"
3/4"
"
"
"
"
"
1"
"
"
"
"
"
2"
"
165
230
216
561
"
"
"
"
3"
"
210
280
283
673
"
"
"
"
4"
"
254
330
305
797
"
"
"
"
6"
"
318
380
403
1039
"
"
"
"
8"
"
381
460
419
1245
"
"
"
"
10"
"
444
510
457
1496
"
"
"
SFD101Z-40C300C
12"
300
521
510
502
1671
LC3
≥-101
乙烯等
"
14"
"
584
560
762
2084
"
"
"
"
16"
"
648
610
832
2300
"
"
"
"
18"
"
"
"
"
"
20"
"
"
"
"
"
24"
"
"
"
"
SFD196Z-40C300P
1/2"
300
ZGOCr18Ni9
≥-196
液氨、乙烯、液化天然氣等
"
3/4"
"
117
150
152
497
"
"
"
"
1"
"
124
150
165
522
"
"
"
"
2"
"
165
230
216
561
"
"
"
"
3"
"
210
280
283
673
"
"
"
"
4"
"
254
330
305
797
"
"
"
"
6"
"
318
380
403
1039
"
"
"
"
8"
"
381
460
419
1245
"
"
"
"
10"
"
444
510
457
1496
"
"
"
"
12"
"
521
510
502
1671
"
"
"
"
14"
"
584
560
762
2084
"
"
"
"
16"
"
648
610
838
2300
"
"
"
"
18"
"
"
"
"
"
20"
"
"
"
"
"
24"
"
"
"
"
SFD46Z-40C600C
1/2"
600
LF1
≥-46
NH3、丙烷
"
3/4"
"
35
140
92
382
"
"
"
"
1"
"
41
180
111
447
"
"
"
"
11/2"
"
57
180
141
499
"
"
"
"
2"
"
165
250
292
580
"
"
"
"
3"
"
210
300
356
790
"
"
"
"
4"
"
273
350
432
946
"
"
"
"
6"
"
356
510
559
1255
"
"
"
SFD101Z-40C600C
3/4"
600
38
140
92
422
LC3
≥-101
乙烯等
"
1"
"
55
180
127
497
"
"
"
"
11/2"
"
70
180
200
560
"
"
"
"
2"
"
165
250
292
640
"
"
"
"
3"
"
210
300
356
860
"
"
"
"
4"
"
273
350
432
1010
"
"
"
"
6"
"
356
510
559
1320
"
"
"
SFD196Z-40C600P
1/2"
600
20
150
92
400
OCr18Ni9
≥-196
液氨、乙烯、液化天然氣等
"
3/4"
"
35
150
92
422
"
"
"
"
1"
"
41
180
133
497
"
"
"
SFD196Z-40C600P
11/2"
600
57
180
152
560
OCr18Ni9
≥-196
液氨、乙烯、液化天然氣等
"
2"
"
165
250
292
640
"
"
"
"
3"
"
210
300
356
860
"
"
"
"
4"
"
273
350
432
1010
"
"
"
"
6"
"
356
510
559
1320
"訂貨須知：
一、①產(chǎn)品名稱與型號(hào)②口徑③是否帶附件以便我們的為您正確選型。
二、若已經(jīng)由設(shè)計(jì)單位選定型號(hào)，請(qǐng)按型號(hào)直接向我們明科銷售部訂購。
三、當(dāng)使用的場(chǎng)合非常重要或環(huán)境比較復(fù)雜時(shí),請(qǐng)您盡量提供設(shè)計(jì)圖紙和詳細(xì)參數(shù)，由我們明科的閥門專家為您審核把關(guān)。
尊敬的客戶：
歡迎您訪問我們的，首先感謝您對(duì)我們明科的關(guān)注，如果您對(duì)我們的產(chǎn)品、服務(wù)有任何建議或者疑問的話，請(qǐng)立即！我們一定會(huì)盡心盡力為您提供優(yōu)質(zhì)的服務(wù)。zui后明科人祝福您----尊貴的客人！??！
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