18/06/2026
Comaglio Pressure Series 1772 is an automatic drop-down seal designed for the bottom edge of doors, offering protection against air, water, light, insects, and smoke, while also providing sound and fire insulation. It is widely used in both timber and PVC doors and is optimized to comply with fire integrity requirements.
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โข Sound Insulation : Achieves up to 44 dB sound reduction.
โข Fire Resistance :
- 30 minutes fire protection when fitted with the standard EPDM gasket.
- 60 minutes fire protection achievable with the optional silicone gasket.
โข Air Permeance : Offers differential pressure, ensuring effective draft sealing.
โข Durability : Rated to 200,000 operating cycles, assuring long-term reliability over repeated daily use.
โข Accessibility : Designed so that, when fully retracted, the seal is not an obstacle for persons with special needs, thus meeting accessibility standard requirements.
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โข Sealing Mechanism : Features a parallel-descent mechanism, which ensures uniform pressure across the entire length of the seal through two-point adjustment screws:
- E screw : Controls the descent (up-down movement).
- R screw : Manages the incline (pressure distribution).
โข Materials :
- Body : Extruded aluminium alloy, chosen for its strength and lightness.
- Gasket : Standard EPDM tubular gasket; silicone gasket available as an optional upgrade for enhanced fire or high-temperature performance.
โข Internal Components:
- Self-lubricating nylon elements reinforced with 30% glass fibre.
- Lengthwise threaded rods made of burnished iron.
- ร 6 mm brass bushings.
- Coil springs crafted from treated stainless steel.
โข Fixings : Pre-mounted brass push-button plates secured with 3.5 ร 25 mm self-drilling screws.
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โข Standard Lengths : Available in sizes of 530 mm, 630 mm, 730 mm, 830 mm, 930 mm, 1030 mm, 1130 mm, 1230 mm, and 1330 mm, with a maximum shortening allowance of 100 mm.
โข Installation Method :
The seal is rebated centrally into the bottom of the door leaf. For fire doors, no additional intumescent edge is required unless specified otherwise in the door manufacturer's test evidence.
Compatible with wooden doors and PVC doors, with fixing configurations to match.
๐๐ฒ๐ฟ๐๐ถ๐ณ๐ถ๐ฐ๐ฎ๐๐ถ๐ผ๐ป & ๐๐ผ๐บ๐ฝ๐น๐ถ๐ฎ๐ป๐ฐ๐ฒ :
โข Fire Test Certificate :
Certified by Warringtonfire, demonstrating suitability for fire-resisting timber doorsets with 30- or 60-minute performance.
โข Scope of Use :
Approved for timber-based fire-resisting doorsets with minimum leaf thickness of 44 mm.
โข Quality & Compliance:
The product is rigorously tested for air permeability, sound attenuation, and mechanical endurance, ensuring compliance with relevant European and UK building hardware standards.
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โข Series / Reference : Pressure Series 1772
โข Sound Insulation : 44 dB
โข Fire Resistance : 30 min (EPDM gasket), 60 min (Silicone gasket)
โข Air Permeance : 2.16 mยณ/h/m @ 25 Pa
โข Reliability : 200,000 operating cycles
โข Accessibility : Non-obstructive for disabled access
โข Mechanism : Patented parallel descent with dual adjustment (E & R screws)
โข Materials : Aluminium alloy 6060, EPDM / Silicone, nylon, iron, brass, stainless steel
โข Fixings : Brass thumb-buttons + self-drilling screws (3.5 ร 25 mm)
โข Lengths Available : 530 โ 1330 mm (max shorten 100 mm)
โข Installation : Rebated central mount; no intumescent required
โข Certification : Warringtonfire BMT/CNA/F15244, EN 1634-1 compatibility
โข Minimum Door Leaf Thickness: 44 mm
๐๐ผ๐ป๐ฐ๐น๐๐๐ถ๐ผ๐ป
The Comaglio Pressure Series 1772 automatic drop-down seal offers a robust, certified solution for high-performance door sealing in environments demanding fire protection, acoustic control, and high endurance. Its sophisticated mechanical design ensures uniform sealing pressure, while the tested and certified features guarantee compliance with fire safety and accessibility standards.
