rubber hydraulic valve

hydraulic valve 1.DN15-2000 2.low cracking pressure 3.low installation 4. no maintenance cost

 

The introduction

On the basis of Spanish ROSS Valve Company and the American Red Valve Company’s summary, model and revolutionary re-engineering, we devote to improve the function the rubber discharge check valve (duckbill shape flexible check valve) continuously, to enhance the performance, making this valve's intensity, toughness, the leak-proof quality to be enhanced greatly.

This valve does not have any activity module, and is exempted from any service. This valve is available for the elevating pipe, the flange pipe, the cement pipe, the glass  Its main features: the rubber flange connects with the valve body to become one which makes gre  Its main features: the rubber flange connects with the valve body to become one which makes great convenience of the installment.

Classification

The main product includes: XH81, XH81A, XH41, XH41A rubber discharge check valve (Spanish calls “the duckbill shape flexible check valve; and Americans call the duckbill shape rubber even valve”).

Main features

The rubber flange connects with the valve body to become one which makes great convenience of the installment. The valve body fully adopts the rubber designing, which would not cause the phenomenon of the siltation or the thing block, at the same time reduce the maintenan main features ce cost, and allow the solid particle to pass though smoothly. Valve body material is the chloroprene rubber, CSM, buna-N rubber, EPDM and so on, and flange material is Q235, 304, 316 and so on.

Applications :

  

This valve is widely used in the seacoast, the sand beach, the wharf, the reservoir, the municipal administration expelling flood water, the pollution discharge. So it can be said that is the environmental protection green valve.

This valve substitutes flap check valve, for the reason that completely solves the obstruction problem of the silt, the stone, the vegetation and the marine life which is easily caused when use knocking door check valves.

Flange rubber discharge check valve main application: Applies in the waterproof system, the drainage system, the water pump outlet, the pumping station and the fluid the aeration system.

Standard dimensions of flange duckbill valve:

In its popular speaking there are two kinds of installation dimensions in the whole nation. One of the installation dimensions connection is based on the GB code flange connection. In order to coordinate with the national standards, our Engineer Li Tongwen who designed the duckbill valve in earliest time stipulated that if the caliber of the duckbill valve is below 800mm, its flange standard should refer to the GB code of ten kilogram bolt hole center distances and the flange outer diameter; and if the one is above 800mm caliber (including800mm), should refer to the GB code of 6 kilogram bolt hole center distances and the flange outer diameter. Another installation dimensions is the self-owned size which is based on the representatives of Jiangsu Blue Valves and Nanjing Shuimei. This size is different with the national standards, but has the possibility to take the American red valve or the Spanish as the standards.  

 

Installation methods and dimensions:

It is made of rubber flanges, valve body and duck-billed, and with metal flange gaskets, can be connected with metal flange naturally, directly installed on the tank, pipeline and cofferdam. Installation of connection, flanges and flange dimensions correspond to guarantee absolute seal after fastening the join, we need to pay attention not to hit rubber sewage valve flange lips.

 

The duckbill valve installation and usage:

Straight elevating check valve should be installed on the horizontal pipeline, the vertical elevating check valve and the bottom valve generally on the vertical pipeline with the medium flows from bottom to top.

The installation position of the elevating type check valve is not restricted. It is usually installed in horizontal pipeline, but may also installed in the vertical pipeline or leaned on the material pipeline.

When installs the check valve, people should pay special attention to the medium flow direction, be supposed to make the medium normal flow direction be in line with the arrow direction which instructed with the valve body, otherwise the medium the normal flowing direction will be interrupted.

The bottom valve should be installed in pipeline's bottom end of the water pump absorbing water. When the check valve shuts down, the hammer pressure in the pipeline will be formed which will damage the valve, the pipeline or equipment, especially the big caliber pipeline or high-pressured pipeline under serious condition. Therefore the conditions should bring to the check valve users’ high attention.

 

 

The advantages and disadvantages of duckbill valves

Advantages:

the duck mouth valve cost is low, if uses the appropriate rubber raw material, the working life will surpass the metal check valve. Meanwhile, the easy installation, diverse and flexible installation methods, and can be repaired.

Shortcoming:

The rubber body is not suitable for long time outdoors working, even using the high quality rubber cannot avoided the aging phenomenon.

Aeration-duckbill valves:

This series of duckbills consist of suite duckbill series in addition with the aeration-head and other accessories. In the process of sewage treatment, the valve body would open when fill the oxidation ditch with the air; when air is not needed close the valve body to prevent backflow. Obstruction-resistant, corrosion-resistant, long working life and simple installation are also the merits of duckbill valves. Aeration-maintenance-free and flexible one-way valve, its required specifications is few and the diameter is small, but the amount demand is large, is very suitable for mass production.

 

 

Duckbill Check Valve Data Sheet:

 

Nominal diameter(inch)	Valve port stair(mm)	Pipeline toughing distance(B>mm)
1/2 ~3/4	15	15
1~1 1/4	20	20
1 1/2~2 1/2	25	25
3	40	40
4	50	50
6	50	50
8	50	50
10	50	50
12~14	100	100
16~20	150	150
24~36	200	200
42	250	250
48~60	300	300
72	400	400
Note: Valve of DN800-1800(32”-72”) is with double Clamps.

rubber hydraulic valve