M&E MEP HVAC Syphonic, SM STAR Engineers India Private Limited

M&E / MEP Mechanical

SM STAR (Mechanical & Electrical Services Special Projects) are a building services contractor specializing in high quality projects, including new build and refurbishment.

We aim to provide innovative and cost effective solutions within a continuously changing environment. We recognize the needs of our clients and work alongside them to meet their own individual objectives.

Commitment ot customer service underpins every stage of each project, whereby individuals are encouraged to take a pro-active role and personal responsibility to achieve the highest possible standards.

Building Client Relations

Client relationships are enhanced by a partnership approach and a spirit of cooperation, whereby every effort is taken to exceed expectations and complete projects on time and within budget.

The Majority of our client base comes through personal recommendation, referrals and repeat business, however we are also keen to be involved in new specialised projects and welcome you all to our website.

M&E / MEP Electrical

The quality and experience of our staff enable us to undertake large scale projects locally and nationally. We have a proven reputation for providing quality electrical services and delivering these projects within set frame works.

We are an NICEIC Registered Electrical Contractor, CHAS accredited as well as also being a member of Constructionline. Our growing client base includes established Construction Companies together with recent contractual works through Humberside Police Authority, Hull and East Yorkshire Hospital NHS Trust, Local Education Establishments and other Blue Chip Companies.


  • Domestic, commercial and light industrial – complete design and Installation
  • Fire alarm system design, installation & Commissioning
  • Electrical testing works and certification
  • Reactive & planned maintenance
  • DATA Installation
  • CCTV Installation
  • Access control
  • Back-up power provisions
M&E MEP HVAC Syphonic, SM STAR Engineers India Private Limited
M&E MEP HVAC Syphonic, SM STAR Engineers India Private Limited

25% of all reportable electrical accidents involve portable appliances. The Electricity at Work Regulations place a legal responsibility on employers, employees and selfemployed persons to comply with the provisions of the regulations and take reasonably practicable steps to ensure that no danger results from the use of such equipment.

The Health & Safety at Work Act (1974) places such an obligation in the following circumstances: Where appliances are used by employees. Where the public may use appliances in establishments such as hospitals, schools, hotels, shops etc. Where appliances are supplied or hired. Where appliances are repaired or serviced. Contact us for a quotation.

M&E / MEP Plumbing

SM STAR were built upon basic core values that are commonly missing from the plumbing industry. What makes Direct different from other plumbing contractors is our responsiveness, quality, and professionalism.

Service, Construction, Design & Maintenance

Water Heater Repair / Replacement & Installs
Hot Water Recirculating Pumps
Backflow Device Installations
Drain Line Backups & Cleanings
Toilet Repair & Installation
Water Piping Repair & Installation
Leaks & Wall Leaks
Hose Bibb Repair / Replacement
Bathroom / Kitchen Updates
Sewer Main Repair & Installations
Water Main Repair & Installations
Water Valve Repair & Installations
Faucet Repair & Installations
Fixture Repair & Installations
Garbage Disposals
Shower Valve Repair / Replacement
And Much More...

M&E MEP HVAC Syphonic, SM STAR Engineers India Private Limited

M&E MEP HVAC Syphonic, SM STAR Engineers India Private Limited

SYPHONIC Rain water harvesting

Designing a Syphonic Rainwater System.

To make a syphonic rainwater system work correctly; several factors have to be considered:

  • Rainfall Intensity Rate
  • Use of specially designed roof outlets
  • Calculated method for sizing the pipework
  • Materials specification for the pipework
  • Designing the pipe configuration for optimum performance

What is the best approach to ensure all the benefits of a syphonic system are utilised?

The first thing is not to use a higher safety factor then necessary, second to consider how to deal with the occasional high rainfall rate that generally will not last for more than 2 minutes (NOT 1 HOUR).


  • Design the primary system to a realistic return rate, 108mm/hr has proved to work well in most locations in the UK with several 2 minute occurrences annually.
  • If a high rainfall rate is the result of calculation, deal with the excess above 108mm/hr by some other means:
  • Charge it via overflow weirs to the outside of the building
  • Install an internal gravity overflow system
  • Install a secondary syphonic system, which only operates when the water level builds up on the roof to a predetermined level.
  • Allow the water to build-up on the roof for a short period; the high intensity rate will only last for 2 minutes, following which the system will remove the excess quickly.

The Syphonic Outlet

Syphonic outlets are designed to reduce the entry of air into the system, if air reaches more than 40% of the volume of the pipe the syphonic action will stop. To reduce the amount of air entering the system a baffle plate is usually fitted over the orifice of the outlet, this not only reduces the amount of air being pulled into the outlet opening, it also stop a vortices forming that will draw air into the system rapidly. The best outlets have been tested and approved by the British Board of Agre´ment. Outlets should also be designed to easily accommodate the water membrane of the roof, which comes in many forms.