vent panel 5The CP Series Vent Panel is a flat, composite panel usually constructed of a 316SS top section, TFE Teflon seal, and 316SS support section. The composite vent panel is available in rectangular (CPR), square (CPS), or circular (CPC) configuration. Burst pressures range from a minimum of 1.5 psig (0,10 barg) to a maximum of 10 psig (0,69 barg).

The CP series vent panel is designed to operate under conditions of positive or vacuum pressure to 50% of the vent panel’s minimum burst rating. This design is excellent for applications operating under cyclic, positive to negative pressures; low burst pressures; and process conditions that require the durability of stainless steel construction.

CPR rectangular or CPS square vent panel designs are available in various sizes from 12″ x 12″ (30 cm x 30 cm) to 44″ x 69″ (112 cm x 175 cm). The CPC circular style vent panel is available in diameters ranging from 10″ to 44″ (25 cm to 112 cm). See Table III and IV for corresponding size and pressure specifications.

Burst Tolerance and Maximum Operating Pressure

CP series vent panels have a burst tolerance of ± 0.5 psig (0,035 barg) for burst pressure ratings up to and including 4.0 psig (0,28 barg). A burst tolerance of ± 1.0 psig (0,07 barg) applies to burst ratings over 4 psig (0,28 barg).

To determine the recommended operating pressure, subtract the burst tolerance from the vent panel’s burst rating which establishes the minimum burst pressure, then multiply by 50%. For example, a CP series vent panel rated 2.5 psig (0,17 barg) will have a minimum burst pressure of 2.0 psig (0,14 barg) and a recommended operating limit of 1.0 psig (0,07 barg). (Burst rating minus burst tolerance x .50)

Vacuum Support

Vacuum support straps are available for CP series vent panels to provide:

• durability under exterior windloads

• support to withstand vacuum

The support straps are supplied in 316 Stainless Steel with a “keylocked” gasket of black neoprene, silicone or fiberglass.

Vacuum support straps are recommended for CP series vent panels rated 2.0 psig (0,14 barg) or below if the panel is required to support exterior windloads or vacuum conditions of up to 1.0 psig (0,07 barg).

You can contact us by Phone 01726 844707 , Email : or using the enquiry form below

Some of our customers testimonials

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After conducting a Third Party Witness Inspection, I was most impressed with Ewart and his team, their professionalism, and product knowledge I found to be excellent.

Ian Johnston

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Assentech were subcontracted to assemble and install a 25m geodesic dome for Shaft G on the Lee Tunnel project. My experience with Assentech from pre-contract through to assembly has been very positive. Unlike other subcontractors I have experienced on this project, Assentech had a very positive attitude to producing the level of documentation required for a project of this scale. Leading to a high quality pre construction packaged approved in a timely manner. The communication regarding the manufacturing process was first class allowing us to easily plan our works and prepare the site. Dome assembly was carried out very efficiently and completed to programme. The task was correctly resourced and well supervised. The work force had a positive attitude and carried out the task safely. In summary from my perspective it has been a very easy subcontract to manage with a high quality finished product.

Robert Colthorpe

Site Agent – Lee Tunnel Project, Morgan Sindall

Emergency-Relief-Valve-Pilot-Operated-2500a  Assentech wins supplier excellence award from Eastman Chemicals

We were extremely pleased with the level of service and professionalism demonstrated by Assentech, right from our initial enquiry, through delivery and post installation. As a recipient of only two of these awards made by Eastman Chemical Company in the UK, based on performance in 2014, Assentech are rightly proud of their achievements.

Robert Dodgson

TH3 Project Procurement Lead, Eastman Chemical Company

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As you said “you delivered what it said on the tin”. On time and on budget.  Your up front engineering to determine the suitability of your product for our application was second to none, i have not seen anyone else in the industry pay as much attention to detail before you get the purchase order number as Assentech.

Garry Lee

Project Manager, Vopak Limited

Emergency-Relief-Valve-Pilot-Operated-2500a  Assentech-IFR Installations at Navigator Terminals

Assentech have supported our Navigator Terminal (formerly known as Vopak Teesside) on two important ~
projects by providing technical assistance and supplying and fitting a total of 11 Internal floating roofs. Both projects have been completed on schedule and on budget. Assentech have provided an excellent level of experience and front end engineering support with high quality drawings and documentation. Their specialist on site labour have worked collaboratively with us and Assentech have proven to be open, honest and flexible partners.
We have experience of both their Heavy Duty Pontoon type and Full Contact IFR’s and we continually monitor operation and performance of all lFR units Installed on site and consider the Assentech supplied Matrix brandto be the best in the market with exceptional build quality and rigidity. Our clients have inspected the installations and have always remarked upon the build quality and have been impressed with their strength in fully supporting up to four people without noticeable deformation. The design and construction of their stainless steel shoe seals continue to prove to operate excellently with no noticeable reduction in performance or flotation ability over the time since Installation.
Assentsch have proven to be extremely competitive on price and their installation and inspection activities have always been thorough. Navigator therefore have no hesitation in recommending Assentech to other companies considering their services.

Brian Beddow

Project Manager, Navigator Terminals Seal Sands