Multy-valve is made of import ABS material , increased the elasticity , tensile strength and heat resistance , corrosion resistance , and the surface is smooth ,good brightness ,high hardness.
Fiberglass sand filters are manufactures using high quality unsaturated polyester resin , good elasticity unsaturated polyester resin , good elasticity and strong corrosion resistance , fiberglass winding reinforced filter tank stronger , combined with handwork and import resin 、fiber， spray gun injection production , aturdy and durable , higher production efficiency . 
The surface spray heavy duty UV protective layer after the overall filanment winding , beautiful , durable , strong UVprotection ability , it can be uaed for a long time in different work and climate encironment.

Turn off the water pump power before convert any function on the multy-valve,the temperature of the circulating water up to 50°C (122°F).
Sand filter maximum working pressure:2.5Kg(250Kpa/36psi/2.5bar)/the maximum pressure test is 4Kg(400Kpa/58psi/4.0bar).Can be produced according to
specify different color, different degree of pressure.The maximum operating temperature is: 50°C (122°F).
The coarse silica sand specification is 0.5mm-0.8mm,Fine sand specifications is: 1mm-2 mm.