What is the difference between ground and ground fire hydrant outside?
Fire hydrant, as the name suggests, fire hydrant above the ground, and the company pipe and the valve connected to it, and so on, will be in the ground once the valve well.Fire hydrant on the ground, all of which are in the underground well.Therefore, the hydrant on the ground can be seen as bolts, while the underground can be identified from or near the manhole cover
Outdoor fire hydrant: Municipal direct supply, in general is the construction of the water company; the material is generally cast iron + galvanizedUnderground fire hydrant: through the partition, the underground water pump outlet, the decompression device, the pressure regulation, the fire fighting unit construction; the material is galvanized
