Full-size American Standard globe valve

Full bore American standard globe valve Product introduction
Full-bore American standard globe valve is a new type of valve in line with American national standard ANSI B16.34 and other international advanced standards. It is widely used in petroleum, chemical industry, urban water supply and drainage, etc. The working principle of full-bore American standard globe valve is mainly based on the torque of the stem. By applying downward pressure to the sealing surface, the valve disc sealing surface is tightly attached to the valve seat sealing surface, thereby preventing the inflow of the medium or regulating the flow rate of the medium. Specifically, when the valve needs to be closed, rotate the handwheel to lower the valve stem, and the valve stem drives the valve disc to move linearly along the center line of the fluid until the valve disc sealing surface is closely attached to the valve seat sealing surface to achieve the interception of the medium. Conversely, when the valve needs to be opened, rotate the handwheel to make the valve stem rise, and the valve disc rises, leaving the sealing surface of the valve seat, and the medium can pass through. Its unique design and structural features make full-bore American standard globe valves perform well in all types of piping systems and become the preferred product for many users.

Full-bore American standard globe valve structure characteristics
Open and close without friction: full-bore American standard valve opening and closing process, there is no direct friction between the valve disc and the seat, this function completely solves the traditional valve due to friction between the sealing surface and affect the sealing performance of the problem.
Top-mounted structure: the valve adopts top-mounted design, and the valve installed on the pipeline can be directly inspected and maintained online without disassembling the whole valve, which can effectively reduce the shutdown time of the device and reduce the maintenance cost.
Single-seat design: eliminates the problem that the medium in the valve cavity affects the safety due to abnormal pressure rise, and improves the reliability and safety of the valve.
Low torque design: special structure design of the valve stem, only with a small handle can easily open and close, easy to operate.
Seal structure: the valve relies on the mechanical force provided by the valve stem to seal the valve disc (conical valve disc/flat valve disc) on the valve seat, so that the sealing performance of the valve is not affected by the change of pipeline pressure difference, and the sealing performance can be reliably guaranteed under various conditions.
Self-cleaning structure of sealing surface: when the valve clack tilts away from the valve seat, the fluid in the pipeline passes evenly along the valve clack sealing surface 360, which not only eliminates the local scouring of the valve seat by high-speed fluid, but also washes away the deposits on the sealing surface, thus achieving the purpose of self-cleaning.
Full bore American standard globe valve Application advantages
Small fluid resistance: full-bore American standard valve flow channel shape straight, fluid resistance is small, its resistance coefficient and the same length of the pipe section is equal, conducive to reducing the energy loss of the pipeline system.
Reliable sealing: conical sealing valve, closing force is small, corrosion resistance, reliable sealing performance, in the vacuum system has also been widely used.
Easy operation: The valve opens and closes quickly, only needs to rotate 90 degrees from full opening to full closing, which is convenient for remote control and automated operation.
Easy maintenance: the valve structure is simple, the sealing ring is generally movable, and it is convenient to disassemble and replace, which reduces the maintenance difficulty and cost.
Wide range of application: full-bore American standard globe valve has a wide range of diameters, from small to a few millimeters, up to a few meters, from high vacuum to high pressure can be applied to meet the needs of different pipeline systems.

Full bore American standard globe valveand reducing diameter globe valve contrast, and reducing diameter globe valve the main difference lies in the design of the flow passage. The diameter of the flow passage of the full-bore shut-off valve is the same as the diameter of the pipeline, and the fluid will not be hindered when passing through the valve, so the fluid resistance is small, and it is suitable for situations where the medium flow and pressure need to be maintained stable. The diameter of the flow passage of the reducing valve is smaller than the diameter of the pipeline, and the fluid will be subject to a certain throttling effect when passing through the valve, thus generating a certain fluid resistance, which is suitable for situations where the medium flow and pressure need to be adjusted.
In addition, the full-bore American standard globe valve sealing performance and reliability is higher, suitable for sealing performance requirements higher occasions. The reduced diameter valve due to relatively simple structure, relatively low price, suitable for some of the sealing performance requirements are not high occasions.

Full-bore American standard globe valvestructure length

150LB
	in	L	D	D1	D2	b	n-ød	H	Do
50	2	203	155	120	100	16	4-ø19	360	200
65	21/2	216	175	140	120	18	4-ø19	380	200
80	3	241	185	150	130	18	8-ø19	415	250
100	4	292	210	175	155	18	8-ø19	465	250
125	5	356	250	210	185	20	8-ø23	515	300
150	6	406	280	240	215	22	8-ø23	545	350
200	8	495	330	290	265	22	12-ø23	675	450
300LB
50	2	267	155	120	100	18	8-ø19	420	200
65	21/2	292	175	140	120	20	8-ø19	465	250
80	3	318	200	160	135	22	8-ø23	490	300
100	4	356	225	185	160	24	8-ø23	590	350
125	5	400	270	225	195	26	8-ø25	690	400
150	6	444	305	260	230	28	12-ø25	760	450
200	8	559	350	305	275	30	12-ø25	1070	450