Product parameters

Main material: valve body forged brass, seal PTFE/HNBR
Valve opening torque: DN15~DN25<1N.m, DN32~50<2N.m
Driver torque: 10N.m
Nominal pressure: 2.0MPa
Working medium: water
Fluid temperature 5~95℃
Valve stem size: 9x9

Ordering model	Product model	Valve type	DN	Thread size	Kv value	Maximum closing pressure difference kPa	Dimensions
Ordering model	Product model	Valve type	DN	Thread size	Kv value	Maximum closing pressure difference kPa	L	H
15517	DQF-B-232*DQQ-B2K3-220	2 way	32	G1-1/4	15	500	103	43.5
15519	DQF-B-240*DQQ-B2K3-220	2 way	40	G1-1/2	24	500	113	48
15520	DQF-B-250*DQQ-B2K3-220	2 way	50	G2	42	400	128	53
15522	DQF-B-332*DQQ-B2K3-220	3 way	32	G1-114	15	500	99	43.5
15523	DQF-B-340*DQQ-B2K3-220	3 way	40	G1-1/2	24	500	110	48
15524	DQF-B-350*DQQ-B2K3-220	3 way	50	G2	42	400	123	53
15544	DQF-B-232*D00-B2M-24AC	2 way	32	G1-1/4	15	500	103	43.5
15545	DQF-B-240*DQQ-B2M-24AC	2 way	40	G1-1/2	24	500	113	48
15546	DQF-B-250*DQQ-B2M-24AC	2 way	50	G2	42	400	128	53
15548	DQF-B-332*DQQ-B2M-24AC	3 way	32	G1-14	15	500	99	43.5
15549	DQF-B-340*DQQ-B2M-24AC	3 way	40	G1-1/2	24	500	106	48
15550	DQF-B-350*DQQ-B2M-24AC	3 way	50	G2	42	400	123	53
Note: The above table is the commonly used recommended models, please consult for details.

Throttling Ball Valve

The structure is easy to install and saves costs.
The closing pressure difference is large and the closing is tight.
The water flows straight through and does not block the residue. The KVS value is much larger than the general two-way valve.
The valve opens flexibly and can effectively prevent water hammer.

fAQ

1. How accurately can a throttling ball valve regulate flow?
A throttle ball valve can achieve high flow regulation accuracy, depending on the valve design, materials and operation mode. It can usually be adjusted to a flow rate within ±5% to ±10%.

2. How to deal with leakage problems of throttle ball valves?
A: Leakage usually comes from worn seals or damaged valve bodies. Check and replace seals regularly, and tighten and repair them when necessary.

3. Can throttling ball valves work in harsh environments?
Yes. Choosing suitable materials (such as stainless steel or plastic) can enable throttle ball valves to work properly in high temperature, high pressure and corrosive environments.

4. How to adjust the flow of a throttle ball valve?
Flow regulation can be achieved by rotating the valve handle to change the opening size of the valve body and manually or electrically adjusting the degree of opening of the valve.

5. How fast does a throttle ball valve respond?
The response speed of a throttle ball valve is usually fast, depending on the type of actuator and the size of the valve. Manual operation generally takes a few seconds, while electric operation is faster.

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