Parker 937490 Suction Strainer 34 Gpm 1-1/2 Npt No Bypass

Product Description

The PARKER 937490 is a threaded suction strainer designed for hydraulic and fluid power systems that require inlet filtration without a bypass valve. Rated at a maximum flow rate of 50 GPM (189 liters per minute), it features a stainless steel screen and a 1-1/2 inch NPT threaded port. At 3.39 inches in diameter and 9.85 inches in length, this strainer fits inline at the pump suction inlet to protect downstream components from particulate contamination. Installation is handled by hydraulic technicians and fluid power mechanics as part of pump system assembly or maintenance.

The PARKER 937490 is suited for hydraulic power units, industrial fluid systems, and mobile equipment applications where suction-side filtration is required. The absence of a bypass valve means the strainer provides consistent protection without allowing unfiltered fluid to bypass the screen element under high-differential conditions. It is typically installed at the reservoir outlet or pump suction port in both stationary and mobile hydraulic installations. Thread compatibility with standard NPT fittings makes it straightforward to integrate into existing plumbing configurations.

Key Features

• No bypass valve — ensures continuous filtration without unfiltered flow under high-differential pressure
• Stainless steel screen material for corrosion resistance and durability in hydraulic fluid environments
• Maximum flow rate of 50 GPM (189 liters per minute) to suit a range of pump sizes
• 1-1/2 inch NPT threaded port for compatibility with standard pipe fittings
• Rated to 195 degrees F (90 degrees C) maximum working temperature
• Compact form factor at 3.39 inches diameter and 9.85 inches length for installation in tight spaces

Compatibility

Designed as an OEM-style suction strainer for hydraulic systems using 1-1/2 inch NPT inlet connections with flow requirements up to 50 GPM.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power mechanic. Depressurize and drain the hydraulic system completely before removing or installing the strainer. Use appropriate thread sealant on NPT connections and verify all fittings are leak-free before restarting the system. Because this strainer has no bypass, monitor system pressure differential at startup to confirm the screen is clean and flow is unobstructed.