Z43F Flat Gate Valve Product Overview:
Flat gate valve is suitable forClass150～900/PN1.0～16.0MPaWorking temperature-29～121℃Used to cut off or connect media in pipelines for oil, natural gas, water, oil products, etc.

Application scope:
Flat gate valves are suitable for natural gas, petroleum, chemical, environmental protection, urban pipelines, gas pipelines and other transportation pipelines, venting systems and gas storage devices, and are used as opening and closing equipment.
Z43The single gate flat gate valve with a guide hole is suitable for long-distance pipelines for natural gas extraction and purification.

Structural features:
1The valve seat adoptsOThe floating valve seat structure with a sealing ring and preloading force ensures bidirectional sealing of the inlet and outlet of the flat gate valve; And the opening and closing torque of this structure is only the same as that of ordinary valves1/2Can easily open and close valves
2When fully open, the channel is smooth and straight, with a very small flow resistance coefficient and no pressure loss. It can be cleaned by passing a rough ball through the pipeline
3Adopting a packing structure with self sealing ability, it does not require frequent adjustment, and the opening and closing are extremely lightweight with reliable sealing performance. The packing box is equipped with an auxiliary sealing grease injection structure, which ensures absolutely reliable sealing performance and truly achieves zero leakage; Solved the most common problem of leakage at the packing of universal valves
4When the flat gate valve is closed, it can automatically release the high pressure inside the chamber, ensuring safe use
5Fully enclosed structure, good protective performance, can adapt to all-weather requirements

1.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 airflow during valve opening or closing. 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)The yoke sleeve made of aluminum bronze is equipped with needle shaped thrust bearings to minimize operating torque.
(2)The thread length of the valve stem extends up to the bracket; Pin and spot welding; Has stability.
(3)The pressure seal structure is simple, equipped with segmented retaining rings and silver plated low-carbon steel gaskets, which helps to disassemble and achieve the best valve cap seal.
(4)The valve seat ring is welded perpendicular to the flow channel, making it easy to maintain.
(5)These valves can be equipped with electric, hydraulic, or pneumatic actuators.DN300The following configuration standard manual handwheel,DN350The above configuration includes a helical gear operating mechanism.
(6)The fully assembled yoke has passed seismic testing and is easy to maintain and install the actuator.
(7)Two piece pressure cover, self-adjusting pressure cover to prevent it from popping out.
(8)The overall rear seat has a hard surface and the longest service life.
(9)The valve disc spring load valve disc can adjust itself, reducing the torque demand of the actuator.
(10)The overall stop is a cast bracket stop device, and the assembled bracket valve disc is positioned to make the valve seat more stable and reliable.

Standard specifications:
Design and Manufacturing Standards:JB/T 5298
Structural length standard:JB/T 5298
Connection flange standard:GB/T 9113
Pressure and temperature rating:GB/T 12224-2005
Test and inspection standards:GB/T 13927-2008、JB/T 5298

Part materials and working conditions:

Part name	Component materials
	JB/T7298		API 6D
valve/valve cover	WCB	WCB	A352-LCB	A351-CF8M
Ram	2Cr13+ENP	20CrMoV+STL	ANSI 410+ENP	ANSI 316+ENP
valve stem	2Cr13	2Cr13	A182-F6a	A182-F316S
valve seat	25+PTFE	20CrMoV+STL	A105+PTFE	A182-F316+PTFE
filler	NBR/FPM	Flexible graphite		PTFE
shim	18-8/Flexible graphite
bolt	35	35CrMo	A193-B7M	A193-B8
Temperature	-29～250℃	-29～550℃	-46～250℃	-40～200℃
Applicable Medium	Water and oil products	Steam and oil products	Propane, ethylene	Nitric Acid

Main dimensions and weight:

Nominal Diameter		Structure lengthL	H				H1
DN	NPS		hand movement	bevel gear drive	aerodynamic	electric
25	11/4	127
32	11/4	165	385				63
40	11/2	165	385				63
50	2	178	415				74
65	21/2	190	462				83
80	3	203	563				95
100	4	229	648				109
125	5	254	715				125
150	6	267	836		636	979	144
200	8	292	1034		796	1096	176
250	10	330	1230		960	1297	204
300	12	356	1405	1460	1118	1520	240
350	14	381	1607	1642	1305	1768	263
400	16	406	1775	1865	1425	1935	293
500	20	457	2176	2251	1724	2300	350
600	24	508	2564	2642	1995	2770	403
700	28	610	2950	3128	2293	3570	450
800	32	660	3335	3515	2675	3985	507
900	36	711	3720	3900	3060	4370	555
1000	40	811	4105	4290	3445	4755	610

Ordering process:
1. Fax the customer's purchase list, call for consultation, or email shweierdun@163.com
2. Received the customer's purchase list and provided the customer with valve model selection and quotation (price list)
3. Specific agreement: delivery time, special requirements, and other matters

Ordering Notice:
1. If the customer has special requirements for the product, the following instructions must be provided in the order contract:
a. Structural length;
b. Connection form;
c. Nominal diameter;
d. Product usage medium, temperature, and pressure range;
e. Testing, inspection standards, and other requirements.
2. Our factory can configure various driving devices according to specific customer requirements.
3. When the customer provides the determined valve type and model, the customer should correctly explain the meaning and requirements of the model, and sign the contract under the condition of mutual understanding between the supply and demand parties.
4. Futures and ordering customers are requested to first call and provide detailed information on the required valve model, specifications, quantity, delivery time, and location. And 30% of the total contract amount shall be prepaid, and the supplier shall prepare materials for production.