Q41F-150 / 300LB ANSI Floating Ball Valve

Medium temperature: -29-150 ℃
Medium: water, steam, oil, etc.

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Product Description

Description of Floating Ball Valve

Medium temperature: -29-150 ℃

Medium: water, steam, oil, etc.

Operation method: handle, denso, turbine

Caliber: 1/2 "-8"

Pressure: 150LB-900LB

Connection method: flange

Body material: ASTM A216 WCB, CF8, CF8M

Design Standard: API6D

ANSI Floating Ball Valve Material of main parts
Part Name		material
Body / bonnet		ASTM A216 WCB, CF8, CF8M
ball		ASTM A105, F304, F316
Valve stem		ASTM A182 F6a, F304, F316
Gasket		PTFE

Application of Floating Ball Valve

This valve is suitable for all kinds of pipelines that are fully open and fully closed, not for throttling.

How the floating ball valve works

Floating ball valves are operated by a shaft or stem attached to the top of the ball, which rotates the ball 90 degrees (a quarter turn). As the ball rotates, the ports are covered or exposed by the walls of the valve body, releasing or stopping the flow of media. The connection between the stem and the ball is loose enough that as the ball rotates around its axis, fluid pressure pushes the ball against the downstream seat, creating a tight seal. For this reason, floating ball valves may not seal effectively in very low pressure applications after a certain amount of seat wear has occurred. This is because there may not be enough media pressure to force the ball against the downstream seat to form a tight seal. In most applications, however, the downstream pressure is sufficient to maintain a tight seal long after the seat begins to wear.

ANSI Floating Ball Valve Q41F performance specifications
model	Nominal pressure (LB)	Test pressure (mpa) water		proper temperature	Applicable medium
		strength	seal
Q41F-150LB	150	3.00	2.20	≤150 ℃	Water, steam, oil, etc.
Q41F-300LB	300	7.50	5.50
Q41F-600LB	600	15.00	11.00

ANSI floating ball valve Q41F dimensions and connection dimensions
model	Nominal diameter (mm)	Size (mm)
model	Nominal diameter (mm)	L	D	D1	D2	bf	z-φd
Q41F-150LB	1/2 "	108	90	60.5	35	11-2	4 * φ16
	3/4 "	117	100	70	43	13.5-2	4 * φ16
	1"	127	110	79.5	51	15-2	4 * φ16
	1 1/4 "	140	115	89	63.5	16.5-2	4 * φ16
	1 1/2 "	165	125	98.5	73	18-2	4 * φ16
	2"	178	150	121	92	19.5-2	4 * φ19
	2 1/2 "	190	180	140	105	23-2	4 * φ19
	3 "	203	190	152.5	127	24.5-2	4 * φ19
	4 "	229	230	190.5	157	24.5-2	8 * φ19
	6 "	394	280	241.5	216	26-2	8 * φ22
	8"	457	345	298.5	270	29-2	8 * φ22
Q41F-300LB	1/2 "	140	95	66.5	35	15-2	4 * φ16
	3/4 "	152	115	82.5	43	16.5-2	4 * φ19
	1"	165	125	89	51	18-2	4 * φ19
	1 1/4 "	178	135	98.5	63.5	19.5-2	4 * φ19
	1 1/2 "	190	155	114.5	73	21-2	4 * φ22
	2"	216	165	127	92	23-2	8 * φ19
	2 1/2 "	241	190	149	105	26-2	8 * φ22
	3 "	282	210	168.5	127	29-2	8 * φ22
	4 "	305	255	200	157	32-2	8 * φ22
	6 "	403	320	270	216	37-2	12 * φ22
	8"	502	380	330	270	42-2	12 * φ25

Advantages and disadvantages of floating ball valve

Advantages of floating ball valve:

• Low fluid resistance, the drag coefficient is the same as for the same length of pipe.

• Simple structure, small size and light weight.

• Tight and reliable. At present, the most widely used sealing surface material for floating ball valves is plastic, which has good sealing performance and has been widely used in vacuum systems.

• Fast shutter speed and easy operation. Rotate up to 90° from fully open to fully closed position for easy remote control.

Disadvantages of floating ball valve:

• The sealing surface of the ball is easily damaged and is not suitable for applications where the medium contains particles.

• Soft-seal valves are not suitable for high temperature and high pressure conditions.

• Hard-sealed valves require high sealing force and high torque to form a protective barrier.

If you have any questions, please contact us at any time you need!