Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

API Standard Three-Piece Trunnion Mounted Ball Valve
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Mobile：+86 189 6779 6135
Fax：+86（577）6738 7099
Email：Yannie@kaiweixi.com
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API Standard Three-Piece Trunnion Mounted Ball Valve

Model：API
Specification：2"-24"
Temperature：≤450℃
Medium：water, gas, oil

Pressure：Class150LB~Class2500LB
Connection method：Flange
Driving method：Manual, pneumatic, electric Other，gear
Material：forged steel,forged stainless steel

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API Standard Three-Piece Trunnion Mounted Ball ValveOverview

API Standard Three-Piece Trunnion Mounted Ball Valve Overview

The API Standard Three-Piece Trunnion Mounted Ball Valve is a high-end industrial valve designed and manufactured in strict compliance with the standards of the American Petroleum Institute (API). It features a three-piece body construction and a trunnion-mounted ball design. The valve body consists of left, center, and right sections connected by high-strength alloy steel bolts, with the ball fixed and supported by upper and lower precision bearings.This valve complies with API 6D, API 608, and other relevant standards. The sealing pair employs either metal hard seals or high-performance soft seals, making it suitable for high-temperature, high-pressure, and demanding media conditions. Its modular structure facilitates maintenance and component replacement.Widely used in critical pipeline systems across the petroleum, natural gas, chemical, long-distance transmission pipeline, and energy sectors, it serves as an essential isolation device where high reliability and easy maintenance are required.

API Standard Three-Piece Trunnion Mounted Ball Valve Product Image

API Standard Three-Piece Trunnion Mounted Ball ValveCharacteristic

API Standard Three-Piece Trunnion Mounted Ball Valve Features

1. Three-Piece Modular Design:

The valve body employs a three-piece bolted connection design, allowing maintenance, cleaning, or seal replacement of the center section without removing the valve from the pipeline. This significantly reduces maintenance downtime.

2. Strict Compliance with API Standards:

The entire process of design, material selection, manufacturing, and testing adheres to standards such as API 6D and API 608, ensuring reliability and interchangeability under high-pressure and high-temperature operating conditions.

3. Low-Torque Operation with Trunnion-Mounted Ball:

The ball is precisely fixed by bearings, providing low and stable operating torque. The seats are designed with spring preload or pressure assistance to ensure reliable bidirectional sealing.

4. Fire-Safe and Safety Design:

Typically compliant with API 607 fire-safe standards, the valve maintains basic sealing performance through its metal secondary seal in case of soft seal failure. The stem is equipped with an anti-blowout structure in accordance with API safety regulations.

5. Long Service Life and Easy Maintenance:

The hard-seal surfaces offer excellent resistance to wear and erosion, ensuring a long service life. The three-piece structure facilitates both online and offline maintenance, significantly reducing lifecycle maintenance costs.

API Standard Three-Piece Trunnion Mounted Ball Valvestructure principle

API Standard Three-Piece Trunnion Mounted Ball Valve Structure Diagram

Parts Name Material List

NO.	Name	Material
1	body	A105,A350-LF2,F304,F316
2	ball	A105+ENP,A350-LF2,,F304,F316
3	seal gasket	25%carbon+TFM1600
4	packing	Flexible Graphite
5	stem	F6A,F304,F316

API Standard Three-Piece Trunnion Mounted Ball Valvetechnology parameter

性能规范表Performance Specification
公称压力Nominal Pressure	2-42	Mpa
强度试验压力Shell Test	3-63
密封试验压力Seal Test	2.2-46.2
适用温度Suitable Temp.	450	℃

API Standard Three-Piece Trunnion Mounted Ball Valvestandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard ASME16.10.

2. The connecting flange shall conform to the standard ASME16.50.

API Standard Three-Piece Trunnion Mounted Ball Valve View Drawing

API Standard Three-Piece Trunnion Mounted Ball Valve Dimensions Table

Class300													Class600
公称通径			外形尺寸		法兰尺寸								公称通径			外形尺寸		法兰尺寸
DN	NPS		L	H	D	T			R	C	N-φh		DN		NPS	L	H	D	T	f	R	C	N-φh
50	2		216	125	165	20.7	2		92.1	127.0	8-φ19		50		2	292	125	165	25.4	7	92.1	127.0	8-φ19
80	3		282	156	210	27.0	2		127	168.3	e-φ22		80		3	356	156	210	31.8	7	127	168.3	8-φ22
100	4		305	195	255	30.2	2		157.2	200.0	8-φ22		100		4	432	195	275	38.1	7	157.2	215.9	8-φ26
150	6		403	245	320	35.0	2		215.9	269.9	12-φ22		150		6	559	245	355	47.7	7	215.9	292.1	2-φ29
200	8		502	290	380	39.7	2		269.9	330.2	12-φ26		200		8	660	290	420	55.6	7	269.9	349.2	12-φ32
250	10		568	340	445	46.1	2		323.8	387.4	16-φ29		250		10	787	340	510	63.5	7	323.8	431.8	16-φ35
300	12		648	380	520	49.3	2		381.0	450.8	6-φ32		300		12	838	380	560	66.7	7	381.0	489.0	20-φ35
350	14		762	420	585	52.4	2		412.8	514.4	20-φ32		350		14	889	420	605	69.9	7	412.8	527.0k	20-φ38
400	16		838	470	650	55.6	2		469.9	571.5	20-φ35		400		16	991	470	685	76.2	7	469.9	603.2k	20-φ4
500	20		991	550	775	62.0	2		584.2	685.8	24-φ35		500		20	1194	550	815	88.9	7	584.2	723.9	24-φ45
Class900
公称通径				外形尺寸				法兰尺寸												RJ法兰(可选)
DN		NPS		L		H		D		T		f		R		C		N-φh		L		槽号
50		2		368		160		215		38.1		7		921		166.1		8-φ26		371
80		3		381		185		240		38.1		7		127		190.5		8-φ26		384		R31
100		4		457		220		290		44.5		7		1572		2350		8-φ32		460		R37
150		6		610		280		380		55.6		7		2159		3175		12-中3		613		R45
200		8		737		335		470		63.5		7		2699		393.7		12-中38		740
250		10		838		380		545		69.9		7		238		4699		16-中38		841		R53
300		12		965		420		610		79.4		7		381.0		533.4		20-φ38
350		14		1029		450		640		85.8		7		4128		5588		20-φ41		1039		R62
400		16		1130		500		705		88.9		7		4699		616.0		20-中45
500		20		1321		590		855		108.0		7		5B42		749.3		20-φ54		1334		R74
Class1500
公称通径外形尺寸法兰尺寸 RJ法兰(可选)
DN		NPS		L		H		D		T		f		R		C		N-φh		L		槽号
50		2		368		160		215		38.1		7		92.1		165.1		8-φ26		371		R24
80		3		470		200		265		47.7		7		127		2032		8-φ32		473		R35
100		4		546		240		310		54.0		7		157.2		241.3		8-φ35		549		R39
150		6		705		290		395		82.6		7		215.9		3175		12-φ38		711		R46
200		8		832		350		485		92.1		7		269.9		393.7		12-φ45		842		R50
250		10		991		410		585		108.0		7		323.8		4826		12-中51		1001		R54
300		12		1130		450		675		123.9		7		381.0		571.5		16-φ54		1146		R58
350		14		1257		500		750		133.4		7		412.8		6350		16-φ61		1276		R63
400		16		1384		530		825		146.1		7		469.9		7048		16-φ67		1406		R67

Articles related to technology research and development

Wafer-type ball valve patented

The utility model provides a wafer-type float valve, which includes a valve body and a driving mechanism. The valve body is provided with a through medium channel in the axial direction, and is tubular in shape. It also includes a butterfly plate that fits and seals with the inner wall of the medium channel. The driving mechanism comprises a valve shaft that passes through the valve body and is connected to the butterfly plate, a valve rod connected to the outer end of the valve shaft in the radial direction, and a float ball connected to the valve rod. The valve rod is provided with a limit bolt that is threadedly connected to the valve body in the swinging direction. The butterfly plate can rotate relative to the valve body. The front end of the valve body at the inlet of the medium channel is provided with a filter screen, which is hollow and hemispherical in shape. The end face of the valve body opposite the filter screen is provided with an annular groove, and the open end of the filter screen is provided with a raised edge that is embedded in the annular groove. The utility model can filter the medium, is simple to install, time-saving, labor-saving, small in size, widely applicable, and can reduce the impact force of the medium on the butterfly plate.
1. A double-clip type float valve, comprising a valve body and a driving mechanism. The valve body is provided with a through medium channel in the axial direction. It is characterized in that the valve body is tubular and further comprises a butterfly plate that fits and seals with the inner wall of the medium channel. The driving mechanism comprises a valve shaft passing through the valve body and connected to the butterfly plate, a valve rod connected to the outer end of the valve shaft in the radial direction, and a float connected to the valve rod. The valve rod is provided with a limit bolt threadedly connected to the valve body in the swinging direction. The butterfly plate is rotatable relative to the valve body. The front end of the valve body located at the inlet of the medium channel is provided with a filter screen. The filter screen is hollow and hemispherical. The end surface of the valve body opposite the filter screen is provided with an annular groove. The open end of the filter screen is provided with a convex edge embedded in the annular groove.
2. A wafer-type float valve according to claim 1, characterized in that the valve rod penetrates one end of the valve shaft located outside the valve body, and is threadedly engaged with the valve rod through a nut to clamp the valve shaft and achieve positioning of the valve rod.
3. A wafer-type ball valve according to claim 2, characterized in that a step is provided at the position on the valve shaft connected to the valve body, a groove is provided at the position on the outer circumferential wall of the valve body corresponding to the step, and a gland is sleeved on the valve shaft, which is threadably connected to the groove and abuts against the step.
4. A wafer-type ball valve according to claim 3, characterized in that a sealing groove is provided on the side of the groove facing the butterfly plate, and a sealing ring sleeved on the valve shaft is arranged in the sealing groove.
5. A wafer-type ball valve according to claim 1, characterized in that an inner groove is provided on the side wall within the annular groove, and an elastic snap ring, which is used to press the convex edge and is compatible with the inner groove, is provided within the annular groove.
6. A wafer-type ball valve according to claim 5, characterized in that the bottom of the convex edge is provided with a plurality of protrusions arranged around the center of the filter screen, and the annular groove is provided with a limiting groove adapted to the protrusions.
7. A wafer-type float valve according to claim 6, characterized in that the protrusion is hemispherical. 8. A wafer-type float valve according to claim 7, characterized in that a clamping groove is provided at the junction of the protrusion and the protruding edge, and a clamping block adapted to the clamping groove is provided at the opening of the limiting groove.

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Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

API Standard Three-Piece Trunnion Mounted Ball Valve

More API, JIS, DIN, GOST、BS Ball Valves>>

More ball valve>>

More valve>>

API Standard Three-Piece Trunnion Mounted Ball Valve