Design
All service valve kits have the same design but some valves have different colours and stylish handles which make them different from others brands. Before buying a service kit check the size, material and brand for better performance
Material
The high-quality differences (lead-free brass, stainless steel, copper) are used in valve manufacturing which is durable and works for a long time. The heavy-duty materials avoid leakage.
Size
Some tankless water heater service valve kits have a standard size that is suitable for residential usage and commercial gas tankless water heater brands like Noritz, Rinnai, Rheem, Takagi, Navien etc.
Connect
The best tankless water heater service valve kit has two valves and one pressure relief valve. Using a wrench, tighten the pressure relief valves until the discharge on the pressure relief valve is placed beneath the isolation valves.
Valves Handle
All service kits have different (red, blue) colours handles which helps for easy hot and cold water identification and the pressure relief valve has a silver test lever which helps to deduct any pressure in the system.
Tankless Water Heater
The tankless water heater has a compact space-saving design suitable for small to medium houses, it provides instant hot water without waiting or sacrifices water pressure. The tankless water heater has a portable design that makes it easy to enjoy endless water inside and outside the home.
Hot Water Isolation Valve
Prevent touch with the hot water discharged during the test to avoid personal injury. The pressure relief valve (PRV) demands to be installed on the hot water valve.
Cold Water Isolation Valve
Drain valves should remain tight during the ordinary system. Do not depend on the drain cap to stop the water from draining. When draining, always remove drain caps slowly to ensure that no pressure exists.
Tank Water Heater
The tank water heater is huge in size, and has space for storing water in it, firstly the tank water stores water and then starts to change cold water into hot water. The tank water heater needs a separate place to store. The tank water heater is more suitable for commercial use.
PTFE Type
Some tankless water heater service valves kits have PTFE type which helps to avoid leakage and easy to fit valves. The PTFE type is easily available in the market at a cheaper price.