Forged Stainless Steel Top Entry Eccentric Half Ball Valve

Product Description

ANSI Forged Stainless Steel Top Entry Eccentric Half Ball Valve

Product Description

The top mounted eccentric hemisphere valve utilizes an eccentric valve body, eccentric ball, and valve seat. When the valve stem rotates, it automatically centers on a common trajectory, and the closer it is closed, the better the sealing effect is achieved. The ball and valve seat of the valve are completely separated, eliminating the wear of the sealing ring and overcoming the problem of traditional ball valve seat and ball sealing surface always wearing. Non metallic elastic materials are embedded in the metal seat, and the metal surface of the valve seat is well protected. This product is particularly suitable for media such as steel, aluminum, fiber, small solid particles, pulp, coal ash, petroleum gas, etc.

Specification

1. Its structure adopts the eccentric wedge principle to achieve the purpose of locking, adjusting, and closing through the transmission mechanism. The sealing pair is a metal face ring with a hard contact seal. The double eccentric structure is located in the ball storage chamber when opening, with a large flow cross-section, and the valve is not washed out. When closing, the valve core is not washed out. When opening, the spherical surface of the valve core gradually moves along the valve seat, effectively removing scaling obstacles and achieving reliable sealing. It is particularly effective for mixed flow transportation where two-phase mixed flow is prone to scaling and solid precipitation

2. The hemisphere of the valve is made of bimetallic material, with different alloys deposited on the base material. The valve seat is also subjected to corresponding surfacing and special treatment. The sealing surface group is composed of various types such as anti-corrosion, wear-resistant, and high-strength, meeting the needs of different occasions
 

3. Tightly sealed, delivering harmful gases with zero leakage
 

4. The valve core of the sealing pair has a compensation amount left, and when the valve is worn out, it can be reliably sealed by turning a little more when closed, extending its service life. In addition, users can still use the valve seat after screwing off the compression nut, adjusting or replacing it, avoiding the drawback of scrapping the entire unit after the valve seal fails.
 

5. The top mounted eccentric hemisphere valve structure has a cover on top, which can be repaired on the pipeline, making it convenient and labor-saving.

Product Details

Item	Part. Name	Material
1	Bonnet	PE
2	Extension pipe	st37
3	Body	st37
4	Flat washer	st37
5	Butterfly Spring	60Si2MnA
6	Ball seat	SS202
7	O-ring	EPDM
8	Ball washer	PTFE+20%C
9	Ball	SS304
10	Stem washer	PTFE+20%C
11	Stem sleeve	st37
12	Stem	SS410
13	Stem ring	PTFE+20%C
14	Stem O-ring	FPM
15	Sleeve	st37
16	Positioning PIN	ASTM1035
17	Handle	st37
18	Washer	Q235A
19	Nut	Q235A
20	Handle cap	ABS

Product Parameters

Type	Nominal pressure(MPa)	Testing pressure		Suitable temperature(°C)	Suitable medium
		Strength (water) (MPa)	Enclose (Water) (MPa)
Q41 /61 H-16C	1.6	2.4	1.76	-40~200ºC	Water,Vapour,Oil
Q41 /61 H-25C	2.5	3.75	2.5

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