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產(chǎn)品簡介

低溫閘閥
1、為防止中腔異常升壓，在閘板的進(jìn)口側(cè)設(shè)置了泄壓孔
2、根據(jù)閥門的工作溫度確定閥蓋的頂部長度，確保閥桿填料的可靠密封
3、根據(jù)工作溫度合理選用填料，墊片等零件的材料
4、嚴(yán)格控制材料的化學(xué)成份及低溫沖擊韌性等力學(xué)性能指標(biāo)
5、采用多種配管法蘭標(biāo)準(zhǔn)及密封面型式，適用于各種工程需要

詳細(xì)介紹

低溫閘閥
閘閥是zui常用的截?cái)嚅y之一，主要用來接通或截?cái)喙苈分械慕橘|(zhì)，不適用于調(diào)節(jié)介質(zhì)流量。閘閥適用的壓力、溫度及口徑范圍很大，尤其適用于中、大口徑的管道。

低溫閘閥的主要優(yōu)點(diǎn)：
（1）流體阻力小。閘閥閘體內(nèi)部介質(zhì)通道是直通的，介質(zhì)流經(jīng)閘閥時(shí)不改變其流動(dòng)方向，因而流動(dòng)阻力較小。
（2）啟閉較省力。啟閉時(shí)閘板運(yùn)動(dòng)方向與介質(zhì)流動(dòng)方向相垂直。與截止閥相比，閘閥的啟閉較為省力。
（3）介質(zhì)流動(dòng)方向一般不受限制。介質(zhì)可從閘閥兩側(cè)任意方向流過，均能達(dá)到接通或截?cái)嗟哪康?。便于安裝，適用于介質(zhì)的流動(dòng)方向可能改變的管路中。

?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	公稱		主要結(jié)構(gòu)尺寸(mm)				閥體材料	性能規(guī)范
型號	通徑DN(mm)	壓力PN(MPa)	D	D₀	L	H	閥體材料	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	"	"	"