JAS SIPHONIC ROOF DRAINAGE SYSTEM
Expand Your Business with JAS SIPHONIC
Become a JAS SIPHONIC Authorized Agent in Malaysia.
JAS SIPHONIC is seeking an authorized agent in Malaysia to introduce and distribute our high-performance siphonic roof drainage solutions for factories, warehouses, data centers, shopping malls, logistics facilities, and other large-roof buildings.
With comprehensive engineering, system design, and technical support from the JAS SIPHONIC team, our authorized agent can offer more than just a roof drain – a complete engineered rainwater drainage solution.
Interested in JAS SIPHONIC Rainwater Drainage System?
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Engineered for Malaysia’s Heavy Rainfall
Malaysia’s tropical climate brings frequent and intense rainfall, making reliable roof drainage essential with large roof areas.
JAS Siphonic systems are hydraulically designed based on local rainfall intensity, roof catchment area, building layout, available head, and discharge conditions to meet the specific requirements of each project.
JAS SIPHONIC vs Conventional Gravity Drainage
More Than Just a Roof Drain
Siphonic performance depends on the engineering of the entire system.
The JAS SIPHONIC roof drain is engineered to limit air entry and promote full-bore flow. Combined with properly sized and routed pipework and precise hydraulic calculations, it forms part of a complete engineered siphonic drainage system.
JAS SIPHONIC Roof Drain Technology
Flow-Optimized
Inlet Geometry
Engineered to limit
air entry and reduce
turbulence for efficient
full-bore flow
Low Water
Depth Activation
Siphonic action starts
at just 2.5 cm
water depth.
Self-Cleaning
Drain Gap
Designed to allow small
debris to pass through,
helping reduce blockage
and maintain
continuous flow.
Performance
Tested
Performance tested in
accordance with ASME
A112.6.9-2005, a dedicated
testing standard for
siphonic roof drains,
with test certification
by TÜV.
Product Models for Different Roof Types
The JAS Siphonic outlet is compatible with HDPE, uPVC, PVC, and GSP piping systems.
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All JAS SIPHONIC Outlets are certified for specified siphonic drainage efficiency
according to ASME 112.6.9-2005, with a test certificate from TÜV.
Engineering Support Behind Every Project
JAS provides comprehensive engineering support throughout the project:
Hydraulic Design & Calculation
Flow rates · Flow velocities System pressure
Hydraulic Design & Calculation
Flow rates · Flow velocities System pressure
Hydraulic Design & Calculation
Flow rates · Flow velocities System pressure
Hydraulic Design & Calculation
Flow rates · Flow velocities System pressure
Global Experience and Engineering Heritage
JAS originated from a UK siphonic engineering company with decades of international project experience. After acquiring the company over 15 years ago and relocating operations to Thailand, JAS has continued to expand its global track record and engineering capabilities.
Proven Worldwide Performance
JAS SIPHONIC systems have been applied across a wide range of projects worldwide, from industrial and commercial buildings to large-scale developments. With more than 45,000 rainwater drainage systems designed globally, JAS SIPHONIC brings extensive experience across diverse climates, rainfall conditions, and project requirements.
British engineering heritage. Asian manufacturing capability. Proven global experience.
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Become a JAS Authorized Agent in Malaysia
Join JAS SIPHONIC as an Authorized Agent in Malaysia and expand your business with a specialized roof drainage solution supported by an experienced engineering team.
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