TRIVALVE NON-RETURN VALVES PRODUCT RANGE
Our backflow preventers have three options: Size, Material & Hardness
Three sizes:
1”, 1.5” and 2” (for BS4825-3, ASME BPE, ISO2037-1 & 14MPW)
- 1 inch (Pipe IDs: 22.1 – 22.6mm)
- 1.5 inch (Pipe IDs: 34.8 – 35.6 mm)
- 2 inch (Pipe IDs: 47.5 – 48.6 mm)
Materials: Food Grade / FDA Silicone (Red & Magnetic) & Food Grade / FDA EPDM (Black & Magnetic)
Three Hardness Values:
40A Shore (Super-Soft), 60A Shore (Soft)
& 80A Shore (Hard)
Material Guide Table
| Resistance to: | Silicone | EPDM |
|---|---|---|
| Abrasion | Poor | Good |
| Compression set | Good | Good |
| Tear | Poor | Fair |
| Flame | Good | Poor |
| Gas Permeability | Low | Low |
| Dilute Acids | Good | Excellent |
| Concentrated Acids | Fair | Excellent |
| Aliphatic Hydrocarbons | Poor | Poor |
| Aromatic Hydrocarbons | Poor | Poor |
| Oxygenated Hydrocarbons | Fair | Good |
| Lubricating Oil | Fair | Poor |
| Oil / Petrol | Fair | Poor |
| Animal / Vegetable Oil | Good | Good |
| Water | Good | Excellent |
| Ozone | Excellent | Excellent |
| Oxidation | Excellent | Good |
| Weathering | Excellent | Excellent |
| Temperature range (in air): | Silicone | EPDM |
| Max Intermitent(°C) | 260 | 125 |
| Max Continuous(°C) | 210 | 100 |
| Minimum(°C) | -60 | -50 |
Specifications
Trivalve is a Registered Design: EUIPO 003771286-0001, UK 4015698.
Materials
Silicone (red)
EPDM (black)
All materials are Food Grade / FDA compliant and magnetically susceptible. Certificates of Conformance are available on request.
Sizes
1 inch (Pipe IDs: 22.1 - 22.6 mm)
1.5 inch (Pipe IDs: 34.8 - 35.6 mm)
2 inch (Pipe IDs: 47.5 - 48.6 mm)
Trivalve is designed to work best in BS4825-3, ASME BPE (2012) & 14MPW piping sizes. Custom sizes available on request.
Nominal Hardness
40A Shore (Super-Soft)
60A Shore (Soft)
80A Shore (Hard)
A softer valve will open more easily than a harder valve and exhibit a lower pressure drop. A harder valve will resist more reverse pressure than a softer valve. Custom hardness values are available on request.
Disclaimer
The information shown in the material guide is a basic guide only. Ratoll Services Ltd accepts no responsibility for any damage or losses associated with the failure of any products supplied. All information supplied is advisory only. It is solely the responsibility of the end user to determine the suitability of products for their application.
