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Rising Stem Metal Seat Gate Valve

FYL is factory located in Tianjin China. Factory specialized in producing different type of valves. Rising Stem Metal Seat Gate Valve is one of major products. Our products has good quality and price advantage, also company available to make OEM products. Welcome inquiries from all over the world.

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Product Description

FYL is factory located in Tianjin China. Factory specialized in producing different type of valves. Resilient seat gate valve is one of major products. Our products has good quality and price advantage, also company available to make OEM products. Welcome inquiries from all over the world.

A rising stem metal seat gate valve is a type of valve used to control the flow of fluid through a pipeline. It has a few key characteristics:

Rising Stem: The stem, which is connected to the gate (the part that blocks or allows flow), rises and lowers as the valve is opened and closed. This movement is visible externally, making it easy to determine whether the valve is open or closed.

Metal Seat: The valve seat, where the gate seals when the valve is closed, is made of metal. This type of seat is highly durable and suitable for high-pressure and high-temperature applications, as it offers a tight seal and long service life.

Gate Valve: This valve type uses a gate (or wedge) that moves up and down to start or stop the flow of fluid. When fully opened, the gate is completely out of the flow path, which minimizes pressure drop.

These valves are commonly used in industries such as oil and gas, water treatment, and power generation due to their reliability and effectiveness in handling a variety of fluids, including corrosive or abrasive materials.

Advantages:

Visible Operation: The rising stem provides a clear indication of whether the valve is open or closed, which enhances operational safety and convenience.

Durability: The metal seat offers excellent durability and resistance to wear, making it suitable for high-pressure and high-temperature applications.

Tight Seal: Metal seats provide a tight seal, reducing the risk of leakage even under extreme conditions.

Low Pressure Drop: When fully opened, the gate valve offers minimal resistance to flow, resulting in a low pressure drop across the valve.

Suitable for Various Fluids: These valves can handle a wide range of fluids, including those that are abrasive or corrosive, making them versatile in different industrial applications.

Disadvantages:

Size and Weight: Rising stem gate valves tend to be larger and heavier than other types of valves, which can make installation and maintenance more challenging.

Longer Operation Time: Because the gate must move a considerable distance to fully open or close, these valves can take longer to operate compared to other valve types like ball valves.

Maintenance Complexity: The metal seats, while durable, can be more challenging to repair or replace compared to soft seats, especially if they become damaged or worn over time.

Potential for Stem Corrosion: Since the stem is exposed when the valve is open, it can be susceptible to corrosion if not properly maintained, especially in harsh environments.

Limited Throttling Capability: Gate valves are not ideal for flow regulation or throttling; they are better suited for fully open or fully closed positions. Partial opening can cause damage to the gate and seats.

SIZE		D				D1				L			n-d
DN(mm)	in	10	16	25	150LB	10	16	25	150LB	DIN	BS	ASME	10	16	25	150LB
50	2	165			150	110			120.7	150	178	177.8	4-19		4-19	4-19
65	2.5	185			180	125			139.7	170	190	190.5	4-19		8-19	4-19
80	3	200			190	145			152.4	180	203	203.2	8-19		8-19	4-19
100	4	220	220	235	230	180	180	190	190.5	190	229	228.6	8-19		8-22	8-19
125	5	250	250	270	255	210	210	220	215.9	200	254	254	8-19		8-26	8-22
150	6	285	285	300	280	240	240	250	241.3	210	267	266.7	8-23		8-26	8-22
200	8	340	340	360	345	295	295	310	298.5	230	292	292.1	8-23	12-23	12-26	8-22
250	10	405	405	425	405	350	355	370	362	250	330	330.2	12-23	12-28	12-30	12-26
300	12	460	460	485	485	400	410	430	431.8	270	356	355.6	12-23	12-28	16-30	12-26
350	14	520	520	555	535	460	470	490	476.3	290	381	381	16-23	16-28	16-33	16-29
400	16	580	580	620	595	515	525	550	539.8	310	406	406	16-28	16-31	16-36	16-29
450	18	640	640		635	565	585		577.9	330	432	432	20-28	20-31		16-32
500	20	715	715		700	620	650		635	350	457	457.2	20-28	20-31		20-32
600	24	840	840		815	725	770		749.3	390	508	508	20-31	20-38		20-35