LT942XBased on the experience of Germany and Japan, the technical personnel of our company have developed the speed regulating and pressure regulating valve according to the characteristics of fluid mechanics on the basis of summarizing the advanced experience of Germany and Japan and summarizing the domestic design and manufacture and practical experience. Lt942x piston type flow control valve has been widely used in power station, water diversion, water supply and other fields. The improved series of flow control valves are not only suitable for clean water, but also have good tolerance for natural rivers, lakes and mild sewage. From the design structure and material selection, the problems of scaling, jamming and large driving device of flow control valve for many years have been solved.

 

At present, the hydraulic control valve is mainly used in water plants, power plants, water diversion projects and other pipe network systems with water as the medium. It plays a role in regulating the flow rate, flow pattern and pressure of pipe network.

1. The feature of the design is that the structure is not afraid of clogging, and the valve is not afraid of blockage. The driving device is obviously reduced.

2. The valve can automatically adjust the preset pipeline medium parameter value to keep it constant within a certain precision, and the precision range can also be adjusted.

3. The valve has good cavitation resistance. The rib plate on the inner wall of the valve has the function of rectifying plate, which can disperse water flow and prevent cavitation. At the same time, it also reduces the valve noise and piston vibration.

4. The control system of the valve can adopt integrated electronic circuit, which has the advantages of small volume, good reliability, high sensitivity and convenient installation and debugging.

5. It can be used as a stop valve. It is not necessary to set other stop valves.

6. If the control degree and precision requirements are not very high, the valve can be controlled by manual or ordinary electric form.

7. It can be installed horizontally or vertically.

Material Science	Part name
HT200、HT250、QT450-10	Valve body, end cover, connecting rod frame, flange pipe and crank
2Cr13、1Cr18Ni9Ti	Stem, pin, piston
1Cr18Ni9Ti	Valve body sealing ring
NBR	Piston seal ring
QT450-10	connecting rod
ZCuA10Fe3、ZCuzN38Mn2Pb2	Bearing
NBR	filler

PN	DN	L	L1	L2	H	H1	D0	A	B
	400	800	715	308	980	335	250	345	390
	450	900	749	347	1100	400	250	410	440
	500	1000	792	383	1180	450	300	460	500
	600	1200	847	458	1250	500	300	510	600
	700	1400	920	528	1390	600	300	580	700
	800	1600	980	599	1530	700	360	680	800
	900 NG-LEFT: 1px; BORDER-LEFT: #f0f0f0; PADDING-RIGHT: 1px" valign="middle" width="76"> 1800	1030	674	1650	800	360	780	900
	1000	2000	1105	744	1800	900	400	860	1000
	1200	2400	1375	852	2010	1000	400	950	1130
	1400	2800	1380	1031	2230	1250	400	1250	1380
	1600	3200	1490	1183	2480	1450	400	1500	1600
	1800	3600	1780	1325	2720	1650	400	1750	1750
	2000	4000	1910	1476	2930	1850	400	2000	1950

(1) In strict accordance with the requirements of the contract, to provide qualified products that meet the design standards.
(2) Strictly check and control the quality of raw materials, components and accessories.
(3) Ensure that the processing technology of the equipment is perfect and the detection means are complete. Products will never leave the factory with defects.
(4) Be fully responsible for the supply, quality, equipment performance, technical interface, service and other aspects of the subcontractor. The key parts specified in the contract must meet the requirements of relevant qualification and be approved by the demander.
(5) Provide relevant department standards and drawings to the supervision unit according to the contract, provide convenience for the supervision, and inform the demander and the supervision representative of the shutdown parts of the supervision equipment 7 days in advance. The supervision assigned by the demander is to urge us to produce qualified products according to the standards, but it does not reduce all our quality responsibilities.
(6) The quality defects in the process of equipment manufacturing shall be timely reported to the demander and the supervision representative without concealment. If the equipment defect exceeds the standard specified in the contract, the supplier shall replace it unconditionally. In the process of installation and trial operation, if there are quality problems of the equipment, the problems should be dealt with first, and then the responsibilities should be clarified. Everything should be based on the requirements of project progress.
(7) In case of any accident, we will replace and repair the supplied equipment free of charge as soon as possible until the demander is satisfied.
(8) In case of missing parts or missing parts caused by other reasons in the process of unpacking, we are responsible for making up the missing parts for free as soon as possible. We shall be responsible for the quality problems found during the installation and commissioning of the equipment and in the operation of the equipment in the future.
(9) Provide the demander with all technical data and drawings according to the contract on time. Have the obligation to invite the demander to participate in our technical design audit when necessary.
(10) According to the time required by the demander to the site for technical services, guide the demander to install, trial run and trial production according to the requirements of our technical data and drawings.
(11) For the supporting equipment related to the contract equipment purchased by the demander first, we will actively provide the technical conditions and data meeting the equipment interface requirements.
(12) Strictly implement the minutes or agreements of the meeting held by both parties on relevant issues.
(13) According to the provisions of the contract, free business training courses on equipment installation, commissioning, use and maintenance technology shall be held for the demander.
(14) Strengthen pre-sale, in-sales and after-sales services, and implement "24-hour service", "advanced service", "whole process service" and "life-long service" in the whole process of product manufacturing, installation, commissioning and overhaul.
(15) After receiving the quality problem information reflected by the demander, reply within 24 hours or send service personnel to the site as soon as possible, so as to ensure that the user is not satisfied with the quality and the service does not stop.
(16) Free for the product to provide lifelong maintenance, where our factory users, have established a detailed user file, our factory after-sales service. Regular return visit and inspection system are implemented to guide the daily maintenance of users, and timely point out and solve possible faults.
(17) At any time to meet the demander's requirements for spare parts, lifetime to provide users with high-quality and low-cost spare parts.