Model NO.: SMV1 Weight: 1.3G Basic Materials: Slicone,SLR Trademark: Better Origin: Xiamen, China Design Type: Umbrella, Duckbll, Flapper Materials Standard: Medical Standard Production Environment: Dust-Free Specification: CE, ROHS, FDA HS Code: 3926901000 Silicone Respirator Valve
Umbrella valves have been around for many years, Their applications include vessel vent
valves such as for automotive fuel tanks, in- and outlet valves for pistonand diaphragm pumps,
oneway check valves in (disposable) breathing masks, and numerous
Other fluid control
functionsin medical devices, home appliances, cars and toys.
Umbrella valves are elastomeric valve components that have a diaphragm shaped sealing
disk or an umbrella shape if you like. These elastomeric components are used as sealing
elements in backflow prevention devices or one-way valves or check valves, in vent valves or
pressure relief valves and in metering valves. When mounted in a seat, the convex diaphragm
flattens out against the valve seat and absorbs a certain amount of seat irregularities and
creates a certain sealing force.
The umbrella valve will allow forward flow once the head pressure creates enough force to lift
the convex diaphragm from the seat and so it will allow flow at a predetermined pressure in
one way and prevent back flow immediately in the opposite way.
The main advantage compared to other types of valves such as spring loaded disc valves is
that an umbrella valve uses its elastic material properties and its preloaded convex shape to
create the sealing force against the seat and that it uses the central stem to hold the
component in place so as to avoid the need for additional components such as a spring and
the need for a central or circumferential disc positioner(s). This simplifies the design of the
assembly and makes the valve adaptable to minimal space, reduces the number of pieces in
a valve, simplifies assembly and last but not least is very cost effective.
Other not less important benefits include:
1)immediate positive seal,
2)position independent,
3)variable opening pressure trough seat thickness,
4)high flow rate vs. package size,
5)corrosion resistant,
6)wear resistant
7)very cost effective.
Installation
1)Pull-in type
These are most common and are well suited for hand assembly. To install one places the long tail through a central bore in the seat, pull it and the valve pops in place
2)Push-in type
These types are preferred when the placing of a long tail in the central bore is more difficult.
For example deep down in the bottom of a cylinder. Or when the up stream side of the valve
is not accessible. For example when placing the valve in the wall of a tank where the inside of the tank is inaccessible. This type can also be used in automatic assembly.
3)Belleville type
The name speaks for itself, the shape of the membrane looks like a Belleville spring washer
held by an elastomeric hinge in the centre. And it acts that way! Typically the valve will pop
suddenly open once a predetermined pressure is achieved. This is much different from
mbrella valves with inverted stem which are more restrictive. The central stem is located down
stream of the valve and is held in place by a retainer. This retainer could be a separate
component or an integral part of the device in which it is integrated such as a cap or lid just
above the umbrella valve. The seat of this type of valve is much easier to manufacture because
it has only one flow orifice.
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.
Basic information:
1.Common Valve types:
Duckbill Shaped Valves, Umbrella Shaped Valves, Flapper Shaped Valves and other custom made valves etc.
2.USAGE:
Medical Devices Valves, Industrial Devices Valves, Aerospace Devices Valves, and Oil/GAS Devices Valves etc.
3.Medical Devices Valves:
Medical Grade Silicone Valves and Dust-Free Silicone Rubber
Production Plants. Respiratory and Anesthesia Circuit Devices Valves.
4.Why Choose Us?
1) decades of experience about precision silicone rubber molding production,
2)we can offer high precise designs and sizes for silicone rubber valves to support
your devices according to your 3 D / 2D drawings, samples, flowing parameters etc.
3)We have Dust Free Silicone Rubber Compression Molding Plants and Dust- Free Dismantling Plants.
4)According to customer demands, most of silicone medical parts should be produced and finished in clean room. Our dust-free plants can up to 100, 000 stage.
Our Advantage:
1. Precision Mold-Making Technology (Since 1998)
2. Competitive Price: Origin Manufacturer.
3. Five experienced designers: offer technology/production/design/artwork support etc.
4. Production and Test strictly according to ISO9001.
5. Complete Production Plant, Equipment, Environment
Our Advantages
1. Five Plants: Mold-Making, Silicone Rubber Compressive, Plastic Injection, LSR
Injection, and Assembly Plants.
2. MoldMaking Equipment: CNC, Mirror EDM, EDM, Slowspeed Wire Cut M/C and other auxiliary equipment etc.
3. Production Equipment: 15 Sets Rubber Compressive Machines, 8 Sets Haitian Plastic Injection Machines, 2 Sets LSR Injection Machines.
4. Test Equipment: 3D Projectors, Sealing Testor, Elasticity Measurement, Durometer etc.
5. Dustfree Environment: LSR injection Machines, 3 Sets Rubber Compressive Machines, and Assembly Line in 100,000 rating Dust-free Plants.
6. Fast-reaction
Name | silicone medical valve |
| Material | Eco-frinedly silicone |
| Process | injection molding |
| Process | low process |
| Structure | control |
| Feature | eco-friendly,Food Grade Silicone |
| Temperature | normal temperature |
| Size | custom made |
| Power | manual |
| Color | transparent |
| Port | 10mm |
| Media | water,liquid |
| Sample | free,available in one day |
| OEM or ODM | yes,welcome |
| mould | large mould production facility |
| factory | professional silicone&plastic factory |
| Certification | ISO9001,RoHs,SGS,FDA |
Contact us if you need more details on Silicone Respirator Valve. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Silicon Respirator Valve、Silica Gel Respirator Valve. If these products fail to match your need, please contact us and we would like to provide relevant information.
Product Categories : Silicone Medical Products > Silicone Valve & Gakset &Seal
