Pentair Diffuser O-Ring 3/16" x 4-7/8" | EQ Series Pump | 350037Z Filter Cartridges The Unicel PG-1903 is a

The Unicel PG-1903 is a single partial replacement DE filter grid for vertical grid DE filter systems with 36 square feet of total filtration capacity

Anthony DE filter systems — specifically the Apollo 4000 and Flowmaster 4000 series

briefly open the air relief valve during startup to confirm air is purging correctly before bringing the filter up to operating pressure

This base provides the structural mounting foundation for the SuperMax pump

Pentair Part Number 59016200 Part Name Air Bleed Sock Kit Quantity Included Kit Compatible Filter Types Cartridge Filter Fits Into

Pentair Diffuser O-Ring 3/16" x 4-7/8" | EQ Series Pump | 350037Z Filter Cartridges The Unicel PG-1903 is aThe Pentair 350037 is the OEM replacement diffuser O ring for the EQ Series Commercial Plastic Pump, sized 3 16" x 4 7 8". IMPORTANT: LUBRICATION REQUIRED SOLD SEPARATELY Always lubricate this O ring with a silicone based lubricant before installation. We carry the Pentair R172351 Lifeguard Silicone Lubricant the OEM matched product for Pentair equipment. This O ring seals the diffuser assembly within the EQ Series pump, preventing bypass of water