Pressure Relief Vents
PRV-F Pressure Relief Vent
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- Single direction venting
- BSRIA free vent area validation
- Operating range: 30 pascals upward
- Serial Number Traceability
- 10 Year Warranty as Standard
- Used in the Pressurisation of Stairwells
Get a quoteThe pressurisation of stairwells is an increasingly common method of ensuring safe means of exit from a building on fire. Pressure control must be in place to maintain minimum and maximum stairwell pressures within agreed parameters.
BS EN 12101-6:2005 (replacing BS 5588-4:1998) requires pressurised fire escapes to be maintained at 50 Pa and limited to a maximum of 60 Pa. Apreco’s extensive range of standard air pressure relief vents (dampers) are characterised by ease of installation.
A variety of bespoke external solutions are also available, including weather protection using fixed low loss louvres and penthouse louvre assemblies. Bespoke designs can handle all flow/pressure requirements in pressurised stairwells built to BS EN 12101-6:2005 (replacing BS 5588- 4:1998).
The PRV Vents can also be adapted for use where there is a requirement for pressure relief venting in industrial applications. The PRV vents have been used in applications for the Defence Industry in combination with security louvres.
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Stairwells
The pressurisation of stairwells with a pressure relief vent is an increasingly common method of ensuring safe means of exit from a building. Pressure control must be in place to maintain minimum and maximum stairwell pressures within agreed parameters.
BS EN 12101-6:2005 (replacing BS 5588-4:1998) requires pressurised fire escapes to be maintained at 50Pa and limited to a maximum of 60Pa.
Apreco’s pressure relief vent is characterised by ease of installation. For internal siting, the blade balancing system allows vertical, horizontal and inclined mounting. A variety of bespoke external solutions are also available, including weather protection using fixed or motorised low loss louvres and penthouse assemblies.
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Vent Sizes
Standard stock models shown and sized. Bespoke sizes available upon request
Metric
Model Volumetric Flow
Rate (m3/s)Nominal Size
(W x H mm)Maximum size*
(W x H mm)Aperture size
(W x H mm)Weight**
(Kg)PRV-F-0303 0.360 @ 30pa
0.475 @ 50pa
0.870 @ 150pa300 x 300 440 x 450 360 x 370 10 PRV-F-0505 1.00 @ 30pa
1.325 @ 50pa
2.420 @ 150pa500 x 500 640 x 650 560 x 570 19 PRV-F-0707 1.965 @ 30pa
2.600 @ 50pa
4.745 @ 150pa700 x 700 840 x 850 760 x 770 29 PRV-F-1010 4.00 @ 30pa
5.300 @ 50pa
9.680 @ 150pa1000 x 1000 1140 x 1150 1060 x 1070 48 * Cover Grille maximum dimensions are 10mm greater than the stated PRV Vent maximum size.
** Weights are indicative and relate to PRV Vent and Wall Liner combined.
Standard Internal wall depth coverage is 100 to 180mm (External 180 to 200mm) extension Sleeve(s) can be added in 75mm increments.Imperial
Model Volumetric Flow
Rate (ft3/s)Nominal Size
(W x H in)Maximum size*
(W x H in)Aperture size
(W x H in)Weight**
(lb)PRV-F-0303 12.71 @ 0.12in wc
16.77 @ 0.20in wc
30.72 @ 0.60in wc11.80 x 11.80 17.30 x 17.70 14.20 x 14.60 22lb 0oz PRV-F-0505 35.32 @ 0.12in wc
46.79 @ 0.20in wc
85.46 @ 0.60in wc19.70 x 19.70 25.20 x 25.60 22.00 x 22.40 41lb 14oz PRV-F-0707 69.39 @ 0.12in wc
91.82 @ 0.20in wc
167.57 @ 0.60in wc27.60 x 27.60 33.10 x 33.50 29.90 x 30.30 63lb 15oz PRV-F-1010 141.26 @ 0.12in wc
187.17 @ 0.20in wc
341.85 @ 0.60in wc39.40 x 39.40 44.90 x 45.30 41.70 x 42.10 105lb 13oz * Cover Grille maximum dimensions are 0.39″ greater than the stated PRV Vent maximum size.
** Weights are indicative and relate to PRV Vent and Wall Liner combined.
Standard Internal wall depth coverage is 4.13 to 7.09″ (External7.09 to 7.87″) extension Sleeve(s) can be added in 2.9″ increments. -
Internal Wall Installation
This typical installation consists of:
2 x Cover Grilles
1 x PRV Vent
1 x Wall LinerExternal Wall Installation
This typical installation consists of:
1 x PRV Vent
1 x Weather Louvre or Dynamic Cover SealDeep Wall Installation
This typical installation consists of:
1 x PRV Vent
1 x Extension Sleeve
1 x Wall LinerNarrow Wall Installation
This typical installation consists of:
1 x PRV Vent
1 x C-Frame Kit
1 x Wall LinerWall Liner
The Wall Liner is used to line the cavity produced in the substrate and with flanges that match that of the vent to produce a clean professional looking installation.
Cover Grilles
Apreco’s extensive range of cover grilles can be fitted directly to both the vent and Wall Liner through the provided fixing holes, not impeding on the Free Vent Area.
Extension Sleeve
The Extension Sleeve allows the Pressure Relief Vent to be installed in deeper walls, increasing the depth of the installation by up to a maximum of 75mm.
Fixed Weather Cowl
The Fixed Weather Cowls (FWC) (used on unit models 0301 & 0501 ONLY) ensure the vent is protected from the outside elements while not impeding the FVA performance.
Fixed Weather Louvre
Apreco’s High Free Vent Area (FVA) Fixed Weather Louvre (FWL) is used on external installations offers a large 65% FVA while ensuring the vent is protected from the outside elements.
Security Weather Louvre
The Security Weather Louvre has been designed specifically for use with Apreco’s range of Pressure Relief Vents with low loss 65% Free Vent Area. Robust design with a burglar-resistant rating of BR2.
C-Frame Kit
The C-Frame Kit allows the Vent to be installed in narrow walls. Each C-Frame Kit decreases the wall depth requirement of the installation by 135mm.
Narrow C-Frame Kit
The Narrow C-Frame Kit allows the Vent to be installed in narrow walls. Each Narrow C-Frame Kit decreases the wall depth requirement of the installation by 50mm.
Security Grilles
Apreco’s security grilles are designed to offer a light to medium-security deterrent where Fire suppression and pressure relief vents could become subject to such environments.
Dynamic Cover Seal
The Dynamic Cover Seal (DCS) is used in conjunction with the IGV or PRV-F in positive venting applications, where additional sealing of the enclosure is required.
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