Flat gate valve without diversion hole-Fornitore globale

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13661441718
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No. 3 Longcao Road, Xuhui District, Shanghai

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Flat gate valve without diversion hole

The non diversion hole flat gate valve is developed using domestic and foreign technology, with quality indicators such as wear resistance, pressure r

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Product details

Flat gate valves without diversion holes are suitable for natural gas, petroleum, chemical, environmental protection, urban pipelines, gas pipelines and other transportation pipelines, venting systems and steam storage devices, as opening and closing equipment. Long distance pipelines suitable for natural gas extraction and purification.

Characteristics of flat gate valve:
The sealing structure of the valve seat should be elastic with pre tightening force, and the upstream and downstream sealing seats should be sealed simultaneously. The valve seat and seal are always sealed face-to-face.

2. The valve seat has a self-cleaning function and is not directly flushed by the airflow during the valve opening or closing process. The valve seat should be made of lubricated and wear-resistant materials.

3. The malfunction of the valve actuator will not affect other parts of the valve, and maintenance and replacement work can be carried out without disassembling the valve.

(1) Yoke sleeve - Aluminum bronze yoke sleeve is equipped with needle shaped thrust bearings to minimize operating torque.

(2) Valve stem - thread length up to the bracket; Pin and spot welding; Has stability.

(3) Pressure seal - simple structure, equipped with segmented retaining rings and silver plated low-carbon steel gaskets, helps to disassemble and achieve the best valve cap seal.

(4) Seat ring - Welded seat ring perpendicular to the flow channel, easy to maintain.

(5) Execution mechanism - These valves can be equipped with electric, hydraulic, or pneumatic actuators. Manual handwheel with standard configuration below DN300, and helical gear operating mechanism with configuration above DN350.

(6) Yoke - The fully assembled yoke has passed seismic testing and is easy to maintain and install the actuator.

(7) Cap - two-piece, self-adjusting cap to prevent it from popping out.

(8) Overall rear seat - hard surface, with the longest service life.

(9) Valve disc - Spring loaded valve disc can adjust itself, reducing the torque demand of the actuator.

(10) Integral Stop - The integral casting bracket stop device positions the assembled bracket valve disc, making the valve seat more stable and reliable. 2、 Execution standard for flat gate valve:

design code	Structure length	Connecting flange	Testing and Inspection	Pressure Temperature	product identification
JB/T5298	JB/T5298	JB/79	JB/T5298	GB9131	GB/T12220
API6D	API6D	ANSI-16.5	API6D	ANSI B16.34	MSS SP-25

3、 Performance specifications for flat gate valve production port:

Design level		Test pressure at room temperature (MPa)				Applicable temperature ℃			Applicable Medium
Design level		housing	Left seal	Left seal	low pressure seal	Type G	Type D	Common	Sulfur resistant type	Basic type
Nominal pressure PN (MPa)	1.6	2.4	1.76	1.76	0.6	-29～50	-45～21	-2～121	Media with a total content of H2S and CO2 greater than 500mg/m2	Oil, natural gas, water, etc
	2.5	3.75	2.75	2.75	0.6
	4.0	6.0	4.4	4.4	0.6
	6.4	9.6	7.04	7.04	0.6
Pound level Lb	150	3.0	2.2	2.2	0.6
Pound level Lb	300	7.7	5.6	5.6	0.6

4、 Main component materials of flat gate valve:

Valve/valve cover	WCB	WC6	A352-LCB	A351-CF8M
Ram	2Cr13+ENP	20CrMoV+STL	ANSO410+ENP	ANSI316+ENP
valve stem	2Cr13	2Cr13	A182-A6a	A182-A316S
valve seat	25+PTFE	20CrMoV+STL	A105+PTFE	A182-F316+PTFE
filler	NBR/FPM	Flexible Graphite		Polytetrafluoroethylene/PTFE+FPM

Detailed media

shim	-
bolt	35	35CrMo	A193-B7M	A193-B8
Applicable Medium	Water, oil outlet, steam	Steam and oil products	Propane, ethylene	Nitric Acid

5、 The main appearance and connection dimensions of the flat gate valve are PN1.6MPa-2.5MPa:

1.6MPa	DN	L	D	D1	D2	Do	f	b	H	H1	n-Φd
Convex method RF (K)Z43WF-16C (K)Z543WF-16C (K)Z643WF-16C (K)Z943WF-16C	50	178	160	125	100	250	3	16	584	80	4-Φ18
	65	190	180	145	120	250	3	18	634	95	4-Φ18
	80	203	195	160	135	250	3	20	688	100	8-Φ18
	100	229	215	181	155	300	3	20	863	114	8-Φ18
	125	254	245	210	185	350	3	22	940	132	8-Φ18
	150	267	280	240	210	350	3	24	1030	150	8-Φ23
	200	292	335	295	265	350	3	26	1277	168	12-Φ23
	250	330	405	355	320	400	3	30	1491	203	12-Φ25
	300	356	460	410	375	450	4	30	1701	237	12-Φ25
	350	381	520	470	435	500	4	34	1875	265	16-Φ30
	400	406	580	525	485	305	4	36	2180	300	16-Φ30
	450	432	640	585	545	305	4	40	2440	325	20-Φ34
	500	457	705	650	608	305	4	44	2860	360	20-Φ41
	600	508	840	770	718	305	5	48	3450	425	20-Φ41
	700	610	910	840	788	305	5	50	3960	460	24-Φ41
	800	660	1020	950	898	305	5	52	4550	512	24-Φ41
	900	711	1120	1050	998	250	5	54	5250	565	28-Φ48
	1000	811	1250	1170	1110	250	5	56	5870	630	28-Φ18
2.5MPa	50	178	160	125	100	250	3	20	584	80	4-Φ18
Convex method RF (K)Z43WF-25 (K)Z543WF-25 (K)Z643WF-25 (K)Z943WF-25	65	190	180	145	120	300	3	22	634	95	8-Φ18
	80	203	195	160	135	350	3	22,	388	100	8-Φ18
	100	229	230	190	160	350	3	24	863	114	8-Φ23
	125	254	270	220	188,	350	3	28	940	132	8-Φ25
	150	267	300	250	218	400	3	30	1030	150	8-Φ25
	200	292	360	310	278	450	3	34	1277	168	12-Φ25
	250	330	425	370	332	500	3	36	1491	203	12-Φ30
	300	356	485	430	390	305	4	40	1701	237	16-Φ30
	350	381	550	490	448	305	4	44	1875	265	16-Φ34
	400	406	610	550	505	305	4	48	2180	300	16-Φ34
	450	432	660	600	555	305	4	50	2440	325	20-Φ34
	500	457	730	660	610	305	4	52	2860	360	20-Φ41
	600	508	840	770	718	305	5	56	3450	425	20-Φ41
	700	610	955	875	815	305	5	60	3960	460	24-Φ48
	800	660	1070	990	930	305	5	64	4550	512	24-Φ48
	900	711	1180	1090	1025	-	5	66	5250	595	28-Φ54
	1000	811	1305	1210	1140	-	5	68	5870	660	28-Φ48

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