CEL DryVent®
Innovative Weather Cap Solutions for Gas Networks
About CEL DryVent® Weather Caps
The CEL DryVent® was designed and developed in 2011 in collaboration with National Grid Gas. Chase Engineering invested in its design, development, tooling, and testing to meet National Grid Gas's goal of reducing hazards associated with venting natural gas and preventing water ingress. This product complies with the Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) and is endorsed by National Grid Gas, included in their relevant policy document.
Rugged and Cost-Effective Design
The CEL DryVent® aims to provide a rugged, cost-effective solution for 7-bar vent termination, preventing water ingress while enabling the upward dispersion of vented gas. Designed to mimic the gas dispersal profile of an ‘ideal’ vertical full bore pipe, the product also meets requirements for being non-metallic, fire-resistant, and made from recycled materials.
Key Features of CEL DryVent®
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Dual Deflector Plate Design: Enables upward gas dispersal and water drainage, unaffected by ice blocking the drain slots.
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Glass Impregnated Plastic: Offers fire-resistance and durability against vandalism.
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Threaded Metal Socket: Ensures easy, secure attachment with the provided tool.
Test Conclusions
Comprehensive Testing Results
The CEL DryVent® was subjected to an extensive series of tests conducted by GL Industrial Services UK Ltd at Loughborough University. These rigorous tests were designed to evaluate the product’s performance, durability, and compliance with safety standards.
Each test addressed specific aspects of the CEL DryVent®'s functionality, from its mechanical integrity to its ability to disperse gas effectively. The testing procedures ensured that the product met the high standards required for use in gas networks, confirming its reliability and robustness under various conditions:
Computational Fluid Dynamics (CFD) Modelling
Description
Determined gas dispersion distances compared to IGEM/SR/25 Edition 2 values.
Results
Results showed that gas is effectively pushed upward from the vent deflector plates, achieving dispersion distances similar to those of an ideal vent. This confirms the CEL DryVent®'s capability to safely disperse vented gas in compliance with industry standards.
Visual Inspection
Description
Assessed aesthetics and ruggedness.
Results
The inspection confirmed the pleasing visual design of the CEL DryVent®, ensuring it integrates seamlessly with existing vent stacks. Additionally, it verified the product's ease of retrofitting, making it a practical choice for gas networks.
Mechanical Integrity Tests
Description
Assessed aesthetics and ruggedness.
Results
The CEL DryVent® demonstrated exceptional durability in drop, impact, and pull tests, confirming its robustness and fitness for purpose in harsh environments. This ensures that the product can withstand physical stress without compromising its functionality.
Lab Flow Tests
Description
Assessed product integrity under repeated pressure.
Results
The tests verified that the CEL DryVent® maintains its integrity and performance even under continuous pressure, ensuring reliable operation in real-world conditions. This reinforces the product's suitability for long-term use in gas networks.
Water Ingress Tests
Description
Simulated varying weather conditions.
Results
The CEL DryVent® successfully prevented water ingress during extensive deluge tests at various vent angles, proving its effectiveness in adverse weather conditions. This capability is crucial for maintaining the safety and functionality of gas vents.
Infra-Red Visualisation Tests
Description
Supported CFD modelling results.
Results
Infra-red visualisation tests aligned with the CFD modelling results, providing qualitative confirmation of the product's gas dispersion capabilities. This additional validation ensures that the CEL DryVent® performs as expected in dispersing vented gas safely.
Kit Design
CEL DryVent® Packaging and Availability
The CEL DryVent® is packaged in robust recycled cardboard boxes containing four vent caps, a 25ml bottle of sealant, and a fitting guidance leaflet. All items are manufactured in the UK. The vent caps are currently available for 1/2” & 1” NB vent pipes, with bulk packaging options available upon request.
For more information and all sales enquiries regarding the CEL DryVent® system, please contact us:
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Phone: 01706 627722
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Post: Chase Engineering Ltd, Mutual Mills, Aspinall Street, Heywood, Lancs, OL10 4HP
