Service Hatches
What are Service Hatches?
• Installed in floor of vehicle (bus/train etc.)
• The hatch can be opened in order to access service
areas in the undercarriage over the gear box and
engine.
• Opening is performed by fast quarter twist bolts.
• Industrially manufactured fully insulated item.
What are the Requirements?
• Withstand weight of passengers standing/walking
•
Insulate heat and noise from below
•
Withstand heat, oils, water, wear
•
Be easy to access, open and close
•
Safety is always a critical requirement
What is Polyrit’s Service Hatch?
•
The Frame and Hatch Cover are made in Rigid P.U.
•
Thermal insulating phenol sheet attached in mold
(no gluing involved)
•
Special sound insulating PU composite is molded between the two
layers.
•
The adhesion between the three materials is inseparable this is as a result of combining all parts within molding steps.
Safety screws are added in any case to insure long life lasting.
•
Quick-locks for closing (flat-head or 5/16” square-head)
•
The frame and hatch are flat with the floor.
Polyrit’s Design (patent pending)
Design features:
1. Locking mechanism
2. Top panel - reinforced PU
3. PU frame in bus floor
4. Closing bracket
5. Sealing Rubber “band”
6. In-molded sound insulating PU
Polyrit’s Design (patent pending)
Advantages:
1. Flush fit between hatch and
frame/floor
2. ¼ turn locking mechanism
3. Rubber band for sealing against gas
penetration
4. Strong top panel
5. Sound insulation in-molded
100% adhesion
What are The Advantages of
Polyrit’s Hatch?
•
Durable, strong and will not need servicing; no layers to fall apart
•
Sound insulation better - 30 dB reduction. (current requirements are
25 dB according to DIN 52215)
•
Easy to open/close – the bolts need only ¼ turn
•
Heat and water resistant
•
Flat to floor frame =no lip =no tripping hazard and clean line of floor
surface
•
No glued layers = easy manufacturing = LOWER COST (compared to
equivalent)