GRACO D32977 – Husky 307 PP 3/8″ NPT Standard Pump, PP Center Section, PP Seats, BN Balls & BN

GRACO D32977 – Husky 307 PP 3/8″ NPT Standard Pump, PP Center Section, PP Seats, BN Balls & BN Diaphragm, 100 PSI

Husky 307 air-operated double diaphragm pump with polypropylene construction, featuring polypropylene seats and Buna-N balls and diaphragms. Designed for reliable fluid handling with 3/8″ NPT connections and compact design for versatile installation.

The Husky 307 air-operated diaphragm pump features a stall-free low pulsation air valve that provides a smooth and rapid changeover.

Typical applications include oil transfer and evacuation, fuel dispense and transfer, windshield wash solution dispense, and water and anti-freeze dispense. Some models UL-approved for use in pumping gasoline and gasoline/alcohol blends up to 10% ethanol, diesel fuel, fuel oil and lubricating oil.

Quick and easy assembly and disassembly design

Easy to service air valve and ball checks

Operates on as little as 20 PSI (1.4 bar, 0.14 MPa)

Split manifold option to pump multiple fluids without mixing

Every pump is tested prior to shipping

3/8 in (9.52 mm) end porting

Delivery up to 7 gpm (26.5 lpm)

Easy-to-service air valve and ball checks

Additional Specifications

Flow Rate: 7 gpm maximum free flow delivery

Max Working Pressure: 20-100 PSI operating range

Material: Polypropylene center section, Polypropylene seats, Buna-N balls and diaphragms

Displacement Per Cycle: 0.02 gallon (0.076 liter)

Max Air Consumption: 6 scfm

Max Solids Size: 0.006 in (1.5 mm)

Max Temperature: PTFE 220°F, Buna-N 180°F, Hytrel 150°F

Sound Level: 75 dBa

Instruction Manual: 308553

Air Exhaust Port Size (in)	3/8
Air Exhaust Port Thread Gender	Female
Air Exhaust Port Thread Type	NPT
Air Inlet Size (in)	1/4
Air Inlet Thread Gender	Female
Air Inlet Thread Type	NPT
Application	Industrial
Ball Material	Buna
Center Section Material	Polypropylene
Compatible Material	Antifreeze, Detergents, Motor Oil, Hydraulic Fluid, Cutting Oil, Water – Wastewater Treatment, Water, Ink
Connection Type	Threaded
Diaphragm Material	Buna
Fluid Inlet Size (in)	3/8
Fluid Inlet Thread Gender	Female
Fluid Inlet Thread Type	NPT
Fluid Outlet Size (in)	3/8
Fluid Outlet Thread Gender	Female
Fluid Outlet Thread Type	NPT
Fluid Section Material	Polypropylene
Manifold Configuration	End Port
Manifold O-Ring Material	PTFE
Material	Polypropylene
Maximum Air Consumption (SCFM)	5.5
Maximum Air Pressure (MPa)	0.7
Maximum Air Pressure (psi)	100
Maximum Cycle Rate (CPM)	330
Maximum Flow Rate (GPM)	6.5
Maximum Fluid Pressure (MPa)	0.7
Maximum Fluid Pressure (psi)	100
Maximum Operating Temperature (°F)	150
Maximum Solid Size (in)	0.0625
Minimum Operating Temperature (°F)	40
Power Source	Air
Seat Material	Polypropylene
Standards Met	CE
Type	Pneumatic Diaphragm Pump
Weight (lb)	4.75

Features

Air-operated double diaphragm design

Polypropylene construction for chemical compatibility

Buna-N diaphragms and balls for durability

Compact 3/8″ NPT connections

Self-priming operation

Variable flow rate with air pressure control

Applications

Chemical transfer applications

Fluid handling where polypropylene compatibility is required

Low to medium flow rate pumping

Applications requiring self-priming capability

Compatible Equipment

Husky 307 pump series

Related Parts

D31277 – Husky 307 AC 3/8″ NPT Standard Pump, PP Center Section, AC Seats, BN Balls & BN Diaphragm

D31255 – Husky 307 AC 3/8″ NPT Standard Pump, PP Center Section, AC Seats, TPE Balls & TPE Diaphragm

D32255 – Husky 307 PP 3/8″ NPT Standard Pump, PP Center Section, AC Seats, TPE Balls & TPE Diaphragm

D32311 – Husky 307 PP 3/8″ NPT Standard Pump, PP Center Section, SS Seats, PTFE Balls & PTFE Diaphragm

BSP ported version available as D38977. Part of the Husky 307 air-operated double diaphragm pump family with various material configurations available.

Reference Manuals

300627 (Page 10) Ink manufacturing and printing solutions