GRACO 166443 - Nipple Fitting, Hex, 303 SST, 7250 PSI, 3/4 NPT - 1/2 NPT

High pressure straight pipe nipple fitting designed for reliable connections in demanding hydraulic and pneumatic applications. Features precision threading and durable construction for long-lasting performance in high-pressure fluid systems.

Specifications

• Thread: 3/4 NPT - 1/2 NPT
• Max Working Pressure: 7250 PSI (499 bar)
• Material: 303 SST
• Fitting Configuration: Straight
• Pipe Or Hose: Pipe
• Fitting Type: Nipple
• Swivel: No
• Jic Or 37 Flare: No
• Type Of Connection: NPTm x NPTm
• First Connection: 3/4 NPT
• Second Connection: 1/2 NPT
• Overall Length: 1.75 (4.4)
• Type: reducing nipple
• Style: hex

Features

• High pressure rating up to 7250 PSI
• Precision NPT threading for secure connections
• Corrosion-resistant 303 stainless steel construction
• Straight configuration for direct pipe connections
• Reducing nipple design (3/4 NPT to 1/2 NPT)

Applications

• High pressure hydraulic systems
• Pneumatic applications
• Fluid transfer systems
• Industrial piping connections
• Spray equipment plumbing

Compatible Equipment

• Model 218763 - Monark 1.5:1 Pneumatic 2-Ball Piston Pump, SS, Stubby Length, Series C 1.5:1 Ratio Monark Pump, Stubby Size; UHMWPE and Leather Packed
• Model 218747 - Stainless Stubby Length SS President 3:1 Pneumatic 2-Ball Piston Pump, Series C, Model 237142, Series A
• Model 237143 - Stubby Cs President 3:1 Pneumatic 2-Ball Piston Pump, 3 Leather/ 2 PTFE Seals, Series A
• Model 237146 - Stainless Stubby SS President 3:1 Pneumatic 2-Ball Piston Pump, 5 PTFE Seals, Series A

Related Parts

• 166255 - Stainless Fluid Packing Gland
• 171439 - NIPPLE, hex, reducing; 1 x 3/4 NPT
• 171439 - NIPPLE, hex, reducing; 1" x 3/4 NPT

This is a reducing nipple that connects 3/4 NPT male to 1/2 NPT female connections. Part of GRACO's high pressure fitting line designed for demanding industrial applications. This is a hex reducing nipple used in the pump assembly, quantity required is 1 Reference number 8 in the parts diagram. Used on 3:1 Ratio President Pumps, Stubby Size with various packing configurations (UHMWPE and Leather Packed, Leather Packed with PTFE Backup, Leather and PTFE Packed, PTFE Packed)

Reference Manuals

• 3J0419EN (Page 13)
• 3J0419EN-A (Page 12)
• 307653 (Page 15)
• 307674 (Page 15)
• 313874 (Page 41)