GRACO 555453 - Steel Hex Shoulder Nipples - Straight, 1/4" x 1/4" Threads, 1/4 NPT, Up to 2

Essential plumbing fitting designed for professional fluid handling systems, providing reliable straight connections in high-pressure progressive cavity pump applications. These street elbows enable secure fluid line connections in GRACO's G3 Pro Grease and MSP Series progressive pump systems.

Specifications

• Thread: 1/4 NPT
• Max Working Pressure: up to 2,500 psi
• Fitting Type: street elbow

Features

• 1/4 NPT threaded connection
• Street elbow configuration
• High-pressure rated for fracturing applications
• Compatible with progressive pump systems
• 1/4 NPT threaded connections for secure fitting
• Street elbow configuration for space-efficient installations

Applications

• Triplex fracturing operations
• Progressive pump fluid connections
• High-pressure grease and fluid transfer systems
• Progressive cavity pump fluid line connections
• Grease lubrication systems
• Industrial fluid handling applications

Compatible Equipment

• MSP Series Progressive pumps
• Triplex pump configurations
• G3 Pro Grease pump systems
• Quintuplex pump configurations

Related Parts

• 563061 - Check valve, double ball
• 156971 - 1/4 NPT hex nipple
• 556420 - 1/4 NPT service tee
• 563160 - 2,500 psi relief
• 557874 - Quick fill stud – 1/4 in NPT
• 563061 - Double Ball Check Valve 48 PSI Nominal Cracking PSI, 1/4" NPSF (F) x 1/4" NPSF (F), SS Body/FKM Ball, 7500 PSI
• 156971 - Hose Fitting, 1/4" NPT(M) x 1/4" NPT(M), 1/4" x 1/4"
• 556420 - Male Run Tee Fitting - 1/4" NPT Male x (2) 1/4" NPT Female
• 563160 - Automatic Relief Indicator for MX Divider Valves, 2500 psi
• 557874 - Stud Fill 4ts5-21000

Quantity of 3 included in both 12V and 24V Triplex Frac Kits. Part of complete fracturing pump system designed for time-based progressive lubrication applications. This part is included as a quantity of 5 pieces in both the 12V and 24V G3 Pro Grease/MSP Series Progressive Quintuplex Kits, indicating it's a commonly needed fitting for complete system installations. Quantity of 3 included in both 12 VDC and 24 VDC Triplex Kit configurations. Part of comprehensive triplex pump system with monitoring capabilities and downloadable system monitoring.

Reference Manuals

• 352295 (Page 4) Fracturing Equipment Selection Guide