1. Optional visual Water Heater Gas Valves
surface should be no trachoma; plated surface should be uniform gloss
shall watch for peeling, cracking, burning, exposed bottom, peeling,
dark spots and obvious defects such as pitting; spraying the surface
should be fine organization , smooth and uniform, not a stream linked to
defects such as exposed at the end. The defect will directly affect the
life of the valve.
2.Gas Valve For Water Heater
pipe thread is connected with the pipeline, in the purchase of visual
thread whether the surface dents, broken teeth and other obvious
defects, with particular attention to the pipe thread and connector
screwed effective length will affect the seal of reliable sex, pay
attention to the effective length of pipe thread when purchasing.
Generally cylindrical pipe thread DN15 effective length of about 10mm.
3.
The valve, ball valve is generally on their body or handle marked with
nominal pressure, can choose according to their needs when purchasing.
4. Replace the existing gate or ball, you want to find out the length of the structure, so can not be installed after purchase.
Pipe
thread 5. Triangle valve has two internal thread and external thread,
to choose according to needs; also note that there are some triangular
zinc alloy valve on the market today, the valve is priced lower than the
average product, but corrosive and cause breakage.
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