Water valves are unique, onepiece, elastomeric components that act as backflow prevention devices or oneway valves or check valves. They have elastomeric lips in the shape of a duckbill which prevent backflow and allow forward flow. 
 
The main advantage of duckbill valves over other types of oneway valves is that duckbill valves are self contained i.e. the critical sealing function is an integral part of the one piece elastomeric component as opposed to valves where a sealing element has to engage with a smooth seat surface to form a seal. 
 
Therefore duckbill valves are easily incorporated and assembled into a wide variety of devices without the hassle or problems associated with the surface finish quality of mating seats and/or complex assembly processes.
 
 
One way valves are used for controlling the direction of flow of a fluid. Designs can include umbrella valves, duckbill valves,  Belleville Valves and diaphragm valves etc.

One way valves can be designed to provide the customer's required head loss and flow rate for particular applications.

A range of materials and designs are available to handle different fluids and service conditions.

Description:

1. Material:  NR NBR SBR EPDM,ect

2. Weight : 4.655 g / PC

3. Strengthof extention: 5.0 MP

4. Hardness :  Silicone about 20~80 Shore A; rubber about 40~85 Shore A

5. Coefficient of elongation: 180%

6. Feature:  Oil ,wear,resistant water,dust proof: excellent

7. PH resistance test :  Ozone and chemical resistance strong 

8. Temperature resistance : -40°C-200°C

9. Technology : Moulding, punch, extrusion

10.  Function:  Waterproof,good sealing or the function you need

11.  Use time : More than Ten year

12.  Certificate:  ISO : 2000 And FDA

13.  Use in :   Pump,Valves, waterspout ,Machine or our design part
 

Other not less important features include:

1)  Position independent
2)  Low opening pressure- immediate free flow
3)  Non-tortuous flow path
4)  High flow rate vs. package size
5)  Virtually no internal volume and dead space
6)  Particle compliant
7)  Corrosion resistant
8)  Wear resistant 
9)  Very cost effective
 







Our Advantage:


1.  All material are of RoHS and REACH approved

2.  Precision Own Mold-Making Technology 

3.  A manufacturer with Mold-Making Plant, Silicone Compression Plant,Assembly Plant

4.  Production and Test strictly according to ISO9001 : 2000

5.  Experienced Designers and Engineers

6.  Test Equipment: 3D Projectors, Elasticity Measurement, Durometer etc
 
7.   Background of OEM service for PHILIPS, FOXCONN

8.  Ability to handle numerous small to MID- size projects

9.   Rapid Reaction Organization: Support customer within short time








Products Development :

Our technical department develops miniature fluid control components for both our catalog as well as for your specific custom requirements:


1.  Precision Own Mold-Making Technology since 2011.

2.   In-depth knowledge of silicone rubber compression production.

3.   Mature Experience of avoid out of shape and damage from Production to Shipment: Materials                 Choice, Design Improvement and Packing Information.

4.   In-depth knowledge of fluid control technology.

5.   In-depth knowledge of elastomer as an engineering material

6.    Rapid prototyping with full sizes production equipment and production materials. (Liquid Silicone                Injection Machines, Silicone Rubber Compressive Machines)

7.    Experienced clean room and precision manufacturing technology.

     These seven competencies allow us to take a quick and integrated approach when designing a new          part, taking function, quality and cost simultaneously into consideration.














 

Heat Preservation Rotor Pump have heat insulation jacket, can inject hot oil, hot water and steam circulation, to keep the pump warm. pump usually be used to transfer bitumen, glue, molasses etc high viscosity liquid. pump also be called Internal Gear Pump. Driving gear (outside rotor) with internal tooth drives the internal rotor and turns in same direction in the full closed pump body. The pump casing and crescent of the front cover separate the inlet from the outlet. When it turns, negative pressure formed at the suction port, the liquid inhaled and being take to the outlet by rotor, then the liquid is expelled from the discharge port as the gears mesh, The transportation of liquid finished.

Heat Preservation Rotor Pump

Heat Preservation Rotor Pump,Stainless Steel High Viscosity Pump,High Viscosity Electric Rotor Pump,Electric Molasses Rotor Pump

Botou Honghai Pump Co.,Ltd , https://www.gearpump.nl