Transparent Roller Shutter Door
Material: polycarbonate (PC bulletproof plastic)
Using aluminum profiles for door connection piece, two-layer structure , special design ,embedded into the door sheet. Simple and elegant, strong resistance to stress.
The base is made of aluminum alloy, special design, corrosion-resistant simple and aesthetic.
Mute track is made of aluminum alloy, dual-slot design, the mute material can be embedded into the slot, and creating a quiet environment.
Control system : 24V DC , mute operation, safe and reliable , durable and long life . In the case of obstacles ,doors rebound or stop automatically stop during opening and closing process.
Door opening and closing process, lighting and delaying three minutes automatically ; users can switch to manual option when power failure, uninterruptible power supply . Please contact with our technical department for particular requirements.
Transparent Roller Shutter Door,Transparent Curtain Roller Shutter Door,Commercial Transparent Roller Shutter Door,Polycarbonate Transparent Roller Shutter Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfrollershutterdoor.com
Pilot-operated safety valve works
Pilot-operated safety valve works: When the system pressure is lower than the set pressure of the valve, the medium pressure is transmitted through the pilot valve to the main valve pressure chamber, acting on the main valve flap, resulting in downward force to close the main valve; When the system pressure increases close to the set pressure, the pilot piston lifts and closes the upper seal, at which point the pilot lower seal is still closed. System pressure is slightly increased, the next seal micro-Kai, the pressure in the main valve pressure chamber through the pilot valve to exclude the vent; when the system pressure reaches slightly higher than the set pressure when the pilot valve seal open, overpressure relief, which in turn leads to Valve piston tends to fall. This feedback can float the main valve flap in a certain position, to adjust the role; when the system pressure overpressure, the main valve flap to fully open; when the system pressure drops below the set pressure, the pilot valve seal closed. Pressure is further reduced to return to the pressure chamber pressure, turn off the main valve.