Piston type pipe force valve is the outlet control valve of Zui new water pump. It is the third generation of new butterfly type multi-function pump control valve after the old manual control valve, hydraulic control butterfly valve and hydraulic control valve. It is a new type of pump station control equipment with novel structure, advanced performance and reliable operation at home and abroad. The valve is suitable for the outlet pipe of centrifugal pump, vacuum pump, mixed flow pump and axial-flow pump in automatic water supply and drainage pump station. There are two control devices, diaphragm type and piston type, which can be applied to clean water, raw water medium, sewage and slurry water respectively. In terms of product types, five specifications are developed, including common type, low-pressure backwater type and sewage type, to meet the requirements of different working conditions.

The piston type pipe force valve is mainly composed of valve body, large valve disc, small valve disc, valve rod, regulating rod, master cylinder, bypass valve, spring, slow closing piston, etc. The opening and closing of the valve is driven by the conveying medium, which is automatically interlocked with the water pump, and no external force is required. When the water pump is started, the water pressure enters the control lower chamber through the inlet bypass pipe. Under the action of the inlet medium, the large valve disc and the small valve disc are opened slowly. The valve opening speed can be adjusted according to the working conditions. When the water pump is closed, the inlet medium of the valve loses pressure, and the large valve disc automatically closes under the action of self force, which stops 70-80% of the water flow medium. At the same time, a part of the return water enters the upper chamber of the control cylinder through the bypass valve, pushing the control rod downward and closing the small valve disc until the medium is completely cut off. The closing time can be adjusted by the bypass valve to control the peak value of water hammer within the specified range.

Piston type pipe force valve adopts advanced fluid design, compact structure, small volume, light weight, low energy consumption, stable operation, good sealing effect, and has the functions of electric gate valve, electric butterfly valve and check valve. It has quick closing speed and adjustable pressure relief time, which can effectively eliminate the harm of water hammer and protect the safety of water pump and pipe network system.

 

Piston type pipe force valve is compact in structure, small in size and light in weight. It is especially suitable for large diameter pipe network system. It can be widely used in power, environmental protection, metallurgy, petrochemical, water department, municipal, food and other industries, water supply and drainage system, sewage pump house, chemical fluid and other industries.

Nominal diameter	length	Overall dimension (reference value)								Connection size (standard value)							Reference weightKg
										0.6MPa				1.OMPa
millimeter	L	L1	L2	H	H1	B	B1	B2	n-b	D1	D2	n-d	D1		D2	n-d
200	190	/	/	520	/	355	/	/	/	320	280	8-18	340		295	8-22	57
250	250	/	/	580	/	420	/	/	/	375	335	12-18	395		350	12-22	80
300	270	/	/	710	/	490	/	/	/	440	395	12-22	445		400	12-22	109
350	290	/	/	770	/	560	/	/	/	490	445	12-22	505		460	16-22	140
400	406	/	/	830	/	625	/	/	/	540	495	16-22	565		515	16-26	220
450	432	/	/	870	/	685	/	/	/	595	550	16-22	615		565	20-26	278
500	457	/	/	930	/	720	/	/	/	645	600	20-22	670		620	20-26	310
600	508	/	/	1090	/	910	/	/	/	755	705	20-26	780		725	20-30	451
700	610	300	240	1260	520	1050	760	650	4-30	860	810	24-26	895		840	24-30	620
800	660	360	220	1440	600	1170	820	720	4-30	975	920	24-30	1015		950	24-33	850
900	711	420	300	1535	650	1315	950	820	4-30	1075	1020	24-30	1115		1050	28-33	1060
1000	811	460	350	1750	700	1460	1040	900	4-36	1175	1120	28-30	1230		1160	28-36	1500

1200	850	500	410	1960	800	1580	1240	1070	4-36	1405	1340	32-33	1455		1380	32-39	1925
1400	950	620	500	2250	900	1900	1400	1250	4-36	1630	1560	36-36	1675		1590	36-42	2400
1600	1100	750	600	2500	1020	2100	1520	1300	4-36	1830	1760	40-36	1915		1820	40-48	3200
1800	1200	860	700	2820	1150	2400	1620	1400	4-36	2045	1970	44-39	2115		2020	44-48	4052
2000	1300	980	820	3150	1250	2750	1800	1550	4-48	2265	2180	48-42	2325		2230	48-48	5126
2200	1450	1100	900	3500	1360	3000	1980	1700	4-48	2475	2390	52-42	2560		2440	52-62	7860
2400	1550	1250	1100	3800	1480	3200	2320	2020	4-48	2685	2600	56-42	2760		2650	56-56	8928
2600	1700	1400	1200	4180	1600	3500	2380	2050	4-48	2905	2810	60-48	2960		2850	60-48	10120
2800	1850	1550	1350	4550	1700	3800	2520	2240	4-48	3115	3020	64-48	3180		3070	64-48	13100
3000	2000	1680	1460	4900	1850	4100	2990	2660	4-48	3315	3220	68-48	3400		3290	68-48	21010