Top mounted, pipe-away, weight loaded
Model No: 141
Designed for installation on bulk storage tanks, ERGIL Storagetech™’s Model 141 Pressure Relief Valve is designed to protect the tank from excessive internal pressure.
In the closed position the weight-loaded pallet and diaphragm assembly is held tightly against a seal to prevent the loss of vapour to atmosphere. As the internal pressure in the tank increases, due to product filling and vapour development, the pressure in tank increases and in the event that the set pressure of the unit is reached, the diaphragm will open and discharge the gas to atmosphere. The opening set-point is selectable from a range between +2.0 mbar and +60 mbar. (+0.8 inch W.C and +24 inch W.C), and the valve will close when the tank returns to a safe pressure.
Setting Range
| Pressure: | Weight-loaded +2.0 mbar and +60 mbar. (+0.8 inch W.C and +24 inch W.C) * Different settings can be done as per request. |
| Ambient temp: | -20°C to +60°C |
Construction
| Standard sizes: | 2” to 12” 50 to 300mm |
| Flanges: | API Class 150 RF, DIN PN16 |
| Body: | Carbon steel, stainless steel, or aluminium |
| Seals: | Nitrile, Teflon, and Klingrit |
| Pallet: | Stainless steel AISI 304 |
| Weights: | Carbon steel, stainless steel, or aluminium |
| Paint finish: | Powder Coating, Colour RAL 9006, Epoxy Paint, Colour RAL 9006, Customer Specification |
| ATEX cert: | Ex II 1/2 G c IIB |
Design & Manufacturing Specifications
The integrity of the seal is tested for leakage in accordance with API Standard 2521 – Use of Pressure-Vacuum Vent Valves for Atmospheric Loss.
The size of the vent should be calculated in accordance with API Standard 2000 (ISO 28300) – Venting Atmospheric and Low-Pressure Storage Tanks or other international standards.
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