Wobetumi de nneɛma ahorow ayɛ solenoid valve ahorow, a egyina sɛnea wɔde di dwuma ne nsu anaa mframa a ɛbɛhwɛ so no so. Nneɛma bi a wɔtaa de yɛ adwuma no bi ne:
1. Brass: Wɔtaa de di dwuma ma general-atirimpɔw applications esiane ne durability, corrosion resistance, ne tumi a ɛde di ɔhyew a ɛkɔ soro ho dwuma nti.
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3. Plastic (te sɛ PVC anaa Polypropylene): Ɛfata sɛ wɔde di dwuma wɔ baabi a corrosion resistance ho hia anaasɛ baabi a ɛsɛ sɛ valve no yɛ hare.
4. Aluminium: Wɔde di dwuma ma nneɛma a emu yɛ hare a ɛho hia sɛ wonya ahoɔden a ɛkɔ fam ne corrosion resistance.
5. Dadeɛ a wɔde gu: Ɛfata ma dwumadie a nhyɛsoɔ a ɛkorɔn anaa ɔhyeɛ a ɛkɔ soro yɛ adeɛ a ɛhaw adwene.
6. Nickel-plated kɔbere: ɛma corrosion resistance foforo ne soro a ɛyɛ mmerɛw.
7. Bronze: Ɛma corrosion resistance a ɛkyɛn so na wɔtaa de di dwuma wɔ po so dwumadi mu.
