Operated flow control valve

NegotiableUpdate on 05/10

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

Self operated flow control valve is an energy-saving control device that does not require external driving energy, relies on the pressure of the regulated medium itself as the power source and its medium pressure branching, and automatically adjusts according to the set value. It integrates detection, control, and execution of many functions into one valve ..

Product Details

This product consists of a low flow resistance single seat (sleeve) valve body, pressure balancing component, commander, and actuator. It is a new generation of valve products that comply with international standards.

Product Features

1. An energy-saving self-control system that does not require external driving energy Low equipment costs;

2. The structure is simple Low maintenance workload;

3. The set point is adjustable and has a wide range Facilitate users to continuously adjust traffic within the set range;

4. Command operation type has faster dynamic response than direct action type. High precision and large adjustable ratio;

5. The valve adopts a pressure balance mechanism, which makes the regulating valve responsive, controllable, and allows for a large pressure difference.

structural diagram

自力式流量调节阀

performance parameters

Main technical parameters of control valve

Nominal diameter DN		15	20	25	32	40	50	65	80	100	125	150	200	250
Rated flow coefficient Kvs		4	6.3	8	16	20	32	50	80	125	160	280	320	400
Nominal pressure MPa		1.6； four
High flow rate under effective pressure (m3/h）	0.02MPa	1.5	2.5	3.5	5.5	9	14	22	36	55	70	125	180	250
High flow rate under effective pressure (m3/h）	0.05 MPa	2.5	3.5	5.5	9	12	22	36	55	85	110	180	-	-
Noise measurement coefficient Z value		0.6	0.6	0.6	0.55	0.55	0.5	0.5	0.45	0.4	0.35	0.3	0.2	0.2
High working temperature ℃		≤140
		Hard sealed with isolation tank ≤ 200										Equipped with isolation tank
		Hard sealed with isolation tank ≤ 200										Extension piece ≤ 200
Pressure balancing component		bellows										Rolling diaphragm
Flange Standard		ANSI, JIS, DIN, GB, JB (special can be provided by the user)
Valve body material		Cast iron; Cast steel; Cast stainless steel
Valve core material		Stainless steel, soft seal with stainless steel embedded rubber ring
High work pressure		Nominal pressure (note the relationship between △ Pmax and working pressure and working temperature)

Main technical parameters of the actuator

Effective area (cm)2）	250	630
Effective pressure (MPa)	0.02； zero point zero five
Allow pressure difference between upper and lower membrane chambers (MPa)	0.4	0.15
material	Film cover: galvanized steel plate; Diaphragm: EPDM or FKM sandwiching fibers
Control pipelines and joints	Copper or steel pipe

performance metrics

control accuracy		±5％
Allowable leakage rate (under specified test conditions)	Soft seal	4×10-4Rated capacity
	hard seal	DN15～50	DN65～125	DN150～250
		10 bubbles/min	20 bubbles/min	40 bubbles/min

Allow pressure difference

Nominal diameter DN		15	20	25	32	40	50	65	80	100	125	150	200	250
Maximum allowable pressure difference △ P (MPa)	PN16	1.6								1.5		1.2	1
	PN40	2

Overall dimensions

Nominal diameter DN	15	20	25	32	40	50	65	80	100	125	150	200	250
L mm	130	150	160	180	200	230	290	310	350	400	480	600	730
B mm	121	212	238	238	240	240	275	275	380	380	295	325	372
φR mm	263										380
H mm	150										520
Approximately weight (kg)	21	23	24	27	31	36	47	55	74	93	118	178	261

Focused on my profession

Leili people only focus on the design, research and development, and production of regulating valves

Leili Valve focuses on the design, research and development, manufacturing, and sales of regulating valves. Lei Liren strictly produces according to the national GB/T standard. Our self operated pressure regulating valve has been applied in multiple environmental protection projects. Our advantage lies in understanding what kind of valve should be selected for each position under different working conditions. Leili valves are flexible and durable, and can be selected carefully according to customer needs. The advantage of Leili regulating valves lies in direct sales from manufacturers, and we are committed to creating high-quality regulating valves.
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