Stainless steel gate valve

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Stainless steel valve series

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Product Details

◆ Product use

The stainless steel gate valve is suitable for the pipeline of various systems of petroleum, chemical, hydraulic and thermal power stations with nominal pressure PN1.6 ~ 2.5MPa and working temperature <-29 ℃ ~ 550 ℃ to cut off or connect the pipeline medium. Applicable medium: water, oil, steam, and acid, alkali, ammonia, urea, sulfur-containing natural gas, etc.

◆Product features

1, compact structure, reasonable design, good valve rigidity, smooth channel, small flow coefficient;
2, the sealing surface is made of stainless steel and hard alloy, long service life;
3. Flexible graphite packing, reliable sealing, light and flexible operation;
4. The driving mode is manual, pneumatic, electric, gear transmission, hydraulic;
5. The structure form is elastic wedge type single ram, rigid wedge type single ram double ram type.

◆ Main technical specifications

Design Criteria		GB/T12234
Pressure-Temperature Rating		GB/T12224
Structure length		GB/T12221
Flange connection size		JB/T 79、GB/T9113、HG/T20592
Welding end connection		GB/T12224
Inspection and test		JB/T9092、GB/T13927、GB/T26480
Nominal pressure (MPa)		PN1.6	PN2.5	PN 4.0
Test pressure (MPa)	Shell test	2.4	3.75	6.0
	High pressure seal test	1.8	2.8	4.4
	Low pressure gas seal test	0.6	0.6	0.6
	Upper seal test	0.6	0.6	0.6
Applicable temperature		-29 ℃ ~ 550 ℃ (different materials for different working conditions)
Applicable media		Water, oil, steam and all kinds of corrosive media (different media use different materials)

◆ Material of main parts

Part Name	Material	Part Name	Material
Valve body	CF8/CF8M	Packing	flexible graphite
Ram	CF8/CF8M	Packing sleeve	A182F304/F316
Stem	A182 F304/F316	Packing gland	CF8/CF8M
Bolt	A193 B8	Swing bolt	A193 B8
Nut	A1948	Stem Nut	ZCuAl10Fe3
Gasket	Flexible graphite stainless steel	Handwheel	KTH300-08
Bonnet	CF8/CF8M	Lock nut	ASTM A105

◆ Main outline connection dimension

Nominal pressure PN	DN(mm)	L	D	D1	D2	b-f	Z-fd	H
PN1.6MPa	50	250	165	125	102	18-3	4-F18	350
	65	270	185	145	122	18-3	8-F18	370
	80	280	200	160	138	20-3	8-F18	390
	100	300	220	180	158	20-3	8-F18	435
	125	325	250	210	188	22-3	8-F18	520
	150	350	285	240	212	22-3	8-F22	610
	200	400	340	295	268	24-3	12-F22	785
	250	450	405	355	320	26-3	12-F26	960
	300	500	460	410	378	28-4	12-F26	1080
	350	550	520	470	438	30-4	16-F26	1200
	400	600	580	525	490	32-4	16-F30	1400
	450	650	640	585	550	40-4	20-F30	1500
	500	700	715	650	310	44-4	20-F33	1630
	600	800	840	770	725	54-5	20-F36	1830
PN2.5MPa	50	250	165	125	102	20-3	4-F18	350
	65	270	185	145	122	22-3	8-F18	370
	80	280	200	160	138	24-3	8-F18	390
	100	300	235	190	162	24-3	8-F22	435
	125	325	270	220	188	26-3	8-F26	520
	150	350	300	250	218	28-3	8-F26	610
	200	400	360	310	278	30-3	12-F26	785
	250	450	425	370	335	32-3	12-F30	930
	300	500	485	430	395	34-4	16F30	1080
	350	550	555	490	450	38-4	16-F33	1250
	400	600	620	550	505	40-4	16-F36	1430

Note: The flange size in this table is in accordance with GB/T 9113-2010, and the structure length is in accordance with GB/T 12221-2005.