GRACO Husky 2150 AL 2 in. (51 mm) NPT Standard Pump, AL Center Section, SS Seats, PTFE Balls & PTFE Diaphragm - (SKU: DF3311)The GRACO DF3311 is a 2 inch air operated double diaphragm pump with an aluminum center section, stainless steel seats, PTFE balls, and PTFE diaphragm. It is designed for reliable transfer of fluids, including those with solids, in industrial and maintenance applications. Key Features: Air Operated Double Diaphragm Pump Husky 2150, 2 in. (51 mm) NPT Aluminum center section, stainless steel seats, PTFE balls, PTFE diaphragm Maximum free flow delivery:

2-ball piston design for uniform delivery

Used for repairing and maintaining the throttle mechanism in GRACO equipment

Regularly inspect mounts for wear or damage as part of routine maintenance

Its intended use is to provide efficient and safe lubrication for landing gear systems in vehicle service applications

The material is not explicitly stated as FKM (Viton) in available listings

but it is an OEM part intended for replacement in compatible GRACO machinery

with pump assembly 17J556)

It features an IEC-compliant

Suitable for managing and dispensing lubricants and other industrial fluids

specifically for setting the correct gap between inlet valve poppets and the piston seat

Helps extend equipment life by preventing debris entry

Intended for maintenance or replacement in GRACO equipment