Hard Seat, High Pressure, In Line Hydraulic Check Valves - DT Series | Product Series

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Hard Seat, High Pressure, In Line Hydraulic Check Valves - DT Series

Hard Seat, High Pressure, In Line Hydraulic Check Valves - DT Series

Where to Buy

Parker's in line check valves are one way flow control devices used primarily in hydraulic systems to eliminate potential damage caused by fluid back pressure.

Technical Specifications

  • Actuation Type: Mechanical
  • Maximum Operating Pressure: 2500 to 5000 psi
  • Mounting Type: Threaded
  • Minimum Operating Temperature: -40 °F
  • Configuration: N/A
  • Maximum Operating Temperature: 250 °F
  • Connection Type: Female and Male Thread
  • Maximum Flow Rate: N/A gal/min
  • Body Size: 1/4 to 1-1/4 inch
  • Flow Direction: N/A
  • Connection Size: Varies
  • Cracking Pressure: 1 - 85 psi
  • Seal Material: Depends on Configuration
  • Body Material: Steel
  • Seat Type: Metal Seal
Safety Warning

Full Product Description

DT Series, In Line, Hydraulic Check Valves (up to 5,000 psi) have a metal to metal hard seat design with a one piece body and all steel construction. The body is a compact size with a variety of male port end configurations. These are in-line one way valves with standard spring crack pressures of 1, 5, and 65 psi. The DT Series hydraulic check valves are available in a wide range of sizes for flow capacities up to 100 gpm.


Hydraulic Check valves are important components that are often overlooked when building a fluid system. A check valve can optimize system performance in the following ways:

• Ensure hydraulic fluid flows in only one direction

• Eliminate potential damage from back pressure

• Isolate sections of a system or system components


Basic hydraulic check valve construction consists of a valve body with an inlet and an outlet port. Inside, a moveable poppet valve is controlled by spring pressure. In most cases the valve is normally closed, opening when the fluid pressure is greater than the spring force (crack pressure), thus allowing the fluid to flow in only one direction. When reverse flow attempts to enter though the outlet the poppet closes and flow through the valve is stopped.


Hard seat check valves utilize a durable metal to metal seal to withstand high flow surges and provide longer service life.


Technical Characteristics:

• Sizes: 1/4” to 1-1/4”

• Material: Steel

• Inlet Port Ends: Male ORB, Male JIC, Male ORFS

• Outlet Port Ends: Male ORB, Male JIC, Male ORFS

• Optional crack pressures available from 1 to 200 psi in 5 psi increments

• Orificed valve option

• Custom shapes and configurations


Note: Some options may not be standard configurations. Please contact the Quick Coupling Division for availability and delivery.


Markets:

• Industrial

• Construction

• Agriculture

• Transportation

• MRO


Features/Benefits:

• Allows the fluid to flow in only one direction (one way valve), protecting the system from fluid back pressure

• Metal to metal hard seat provides longer life and is durable for high flow surges

• Custom shapes and configurations can integrate special features to reduce the number of components and potential leak points in a system

• Optional crack pressures are available on request

• Optional orificed valve allows metered flow when the valve is closed. Orifice bore size is determined by application requirements.


Applications: 

• Industrial, mobile, and construction equipment

• Restrictor Check Circuit

• High/Low Pump Circuit

• Slow Advance/Rapid Return Circuit

• Oil Cooler By-Pass Circuit

• Sequence Circuit

• Pilot Pressure Circuit

• Accumulator Circuit

Related Documents

Literature and Reference Materials
Catalog 3800 Quick Coupling Products
Check Valves as Pressure Regulators Brochure
Fluid Compatibility Chart
Port End Assembly Guide
QCD Check Valve Product Guide
Compliance, Certifications & Safety
Safety Guide: Quick Couplings and Related Accessories
Product Demos & Tutorials
How to Install and Operate Check Valves
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Products Maximum Working Pressure (psi) Cracking Pressure (psi) Inlet Port Connection Type Inlet Port Size (inch) Outlet Port Connection Type Outlet Port Size (inch)
DT-250-MFMO-5 5000 5 Male JIC 37 degree 7/16 - 20 UNF Male SAE O-ring Straight Thread 5000
DT-370-MFMF-5 5000 5 Male JIC 37 degree 9/16 - 18 UNF Male JIC 37 degree 5000
DT-370-MFMF-65 5000 65 Male JIC 37 degree 9/16 - 18 UNF Male JIC 37 degree 5000
DT-370-MFMO-5 5000 5 Male JIC 37 degree 9/16 - 18 UNF Male SAE O-ring Straight Thread 5000
DT-370-MFMO-65 5000 65 Male JIC 37 degree 9/16 - 18 UNF Male SAE O-ring Straight Thread 5000
DT-370-MOMF-5 5000 5 Male SAE O-ring Straight Thread 9/16 - 18 UNF Male JIC 37 degree 5000
DT-370-MOMF-65 5000 65 Male SAE O-ring Straight Thread 9/16 - 18 UNF Male JIC 37 degree 5000
DT-370-MOMS-5 5000 5 Male SAE O-ring Straight Thread 9/16 - 18 UNF Male Seal-Lok 5000
DT-370-MOMS-65 5000 65 Male SAE O-ring Straight Thread 9/16 - 18 UNF Male Seal-Lok 5000
DT-370-MSMO-5 5000 5 Male Seal-Lok 11/16 - 16 UN Male SAE O-ring Straight Thread 5000
DT-370-MSMO-65 5000 65 Male Seal-Lok 11/16 - 16 UN Male SAE O-ring Straight Thread 5000
DT-500-MSMO-65 5000 65 Male Seal-Lok 13/16 - 16 UN Male SAE O-ring Straight Thread 3/4 - 16 UNF
DT-500-MSMS-5 5000 5 Male Seal-Lok 13/16 - 16 UN Male Seal-Lok 5000
DT-620-MFMF-5 3500 5 Male JIC 37 degree 7/8 - 14 UNF Male JIC 37 degree 5000
DT-620-MFMO-5 3500 5 Male JIC 37 degree 7/8 - 14 UNF Male SAE O-ring Straight Thread 5000
DT-620-MOMF-5 3500 5 Male SAE O-ring Straight Thread 7/8 - 14 UNF Male JIC 37 degree 5000
DT-620-MOMS-5 5000 5 Male SAE O-ring Straight Thread 7/8 - 14 UNF Male Seal-Lok 1 - 14 UNS
DT-620-MSMO-5 5000 5 Male Seal-Lok 1 - 14 UNS Male SAE O-ring Straight Thread 5000
DT-620-MSMS-5 5000 5 Male Seal-Lok 1 - 14 UNS Male Seal-Lok 1 - 14 UNS
DT-750-MFMF-5 3500 5 Male JIC 37 degree 1 1/16 - 12 UN Male JIC 37 degree 1 1/16 - 12 UN
DT-750-MFMF-65 3500 65 Male JIC 37 degree 1 1/16 - 12 UN Male JIC 37 degree 1 1/16 - 12 UN
DT-750-MFMO-1 3500 1 Male JIC 37 degree 1 1/16 - 12 UN Male SAE O-ring Straight Thread 1 1/16 - 12 UN
DT-750-MSMO-5 5000 5 Male Seal-Lok 1 3/16 - 12 UN Male SAE O-ring Straight Thread 1 1/16 - 12 UN
DT-750-MSMO-65 5000 65 Male Seal-Lok 1 3/16 - 12 UN Male SAE O-ring Straight Thread 1 1/16 - 12 UN
DT-750-MSMS-5 5000 5 Male Seal-Lok 1 3/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN
DT-750-MSMS-65 5000 65 Male Seal-Lok 1 3/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN
DT-1000-MFMF-5 3000 5 Male JIC 37 degree 1 5/16 - 12 UN Male JIC 37 degree 1 5/16 - 12 UN
DT-1000-MFMF-65 3000 65 Male JIC 37 degree 1 5/16 - 12 UN Male JIC 37 degree 1 5/16 - 12 UN
DT-1000-MFMO-5 3000 5 Male JIC 37 degree 1 5/16 - 12 UN Male SAE O-ring Straight Thread 1 5/16 - 12 UN
DT-1000-MFMO-65 3000 65 Male JIC 37 degree 1 5/16 - 12 UN Male SAE O-ring Straight Thread 1 5/16 - 12 UN
DT-1000-MOMF-5 3000 5 Male SAE O-ring Straight Thread 1 5/16 - 12 UN Male JIC 37 degree 1 5/16 - 12 UN
DT-1000-MOMF-65 3000 65 Male SAE O-ring Straight Thread 1 5/16 - 12 UN Male JIC 37 degree 1 5/16 - 12 UN
DT-1000-MOMS-5 5000 5 Male SAE O-ring Straight Thread 1 5/16 - 12 UN Male Seal-Lok 1 7/16 - 12 UN
DT-1000-MOMS-65 5000 65 Male SAE O-ring Straight Thread 1 5/16 - 12 UN Male Seal-Lok 1 7/16 - 12 UN
DT-1000-MSMO-5 5000 5 Male Seal-Lok 1 7/16 - 12 UN Male SAE O-ring Straight Thread 1 5/16 - 12 UN
DT-1000-MSMS-5 5000 5 Male Seal-Lok 1 7/16 - 12 UN Male Seal-Lok 1 7/16 - 12 UN
DT-1250-MFMF-5 2500 5 Male JIC 37 degree 1 5/8 - 12 UN Male JIC 37 degree 1 5/8 - 12 UN
DT-1250-MFMO-5 2500 5 Male JIC 37 degree 1 5/8 - 12 UN Male SAE O-ring Straight Thread 1 5/8 - 12 UN
DT-1250-MOMF-5 2500 5 Male SAE O-ring Straight Thread 1 5/8 - 12 UN Male JIC 37 degree 1 5/8 - 12 UN
DT-1250-MOMS-5 4000 5 Male SAE O-ring Straight Thread 1 5/8 - 12 UN Male Seal-Lok 1 11/16 - 12 UN
DT-1250-MSMO-5 4000 5 Male Seal-Lok 1 11/16 - 12 UN Male SAE O-ring Straight Thread 1 5/8 - 12 UN
DT-1250-MSMS-5 4000 5 Male Seal-Lok 1 11/16 - 12 UN Male Seal-Lok 1 11/16 - 12 UN
DT-1250-MSMS-65 4000 65 Male Seal-Lok 1 11/16 - 12 UN Male Seal-Lok 1 11/16 - 12 UN
DT-370-MSMS-5 5000 5 Male Seal-Lok 11/16 - 16 UN Male Seal-Lok 5000
DT-500-MFMF-5 4500 5 Male JIC 37 degree 3/4 - 16 UNF Male JIC 37 degree 3/4 - 16 UNF
DT-500-MFMF-65 4500 65 Male JIC 37 degree 3/4 - 16 UNF Male JIC 37 degree 3/4 - 16 UNF
DT-500-MFMO-5 4500 5 Male JIC 37 degree 3/4 - 16 UNF Male SAE O-ring Straight Thread 3/4 - 16 UNF
DT-500-MFMO-65 4500 65 Male JIC 37 degree 3/4 - 16 UNF Male SAE O-ring Straight Thread 3/4 - 16 UNF
DT-500-MOMF-5 4500 5 Male SAE O-ring Straight Thread 3/4 - 16 UNF Male JIC 37 degree 3/4 - 16 UNF
DT-500-MOMF-65 4500 65 Male SAE O-ring Straight Thread 3/4 - 16 UNF Male JIC 37 degree 3/4 - 16 UNF
DT-500-MOMS-1 5000 1 Male SAE O-ring Straight Thread 3/4 - 16 UNF Male Seal-Lok 5000
DT-500-MOMS-5 5000 5 Male SAE O-ring Straight Thread 3/4 - 16 UNF Male Seal-Lok 5000
DT-500-MOMS-65 5000 65 Male SAE O-ring Straight Thread 3/4 - 16 UNF Male Seal-Lok 5000
DT-500-MSMO-5 5000 5 Male Seal-Lok 13/16 - 16 UN Male SAE O-ring Straight Thread 3/4 - 16 UNF
DT-750-MFMO-5 3500 5 Male JIC 37 degree 1 1/16 - 12 UN Male SAE O-ring Straight Thread 1 1/16 - 12 UN
DT-750-MFMO-65 3500 65 Male JIC 37 degree 1 1/16 - 12 UN Male SAE O-ring Straight Thread 1 1/16 - 12 UN
DT-750-MOMF-1 3500 1 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male JIC 37 degree 1 1/16 - 12 UN
DT-750-MOMF-5 3500 5 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male JIC 37 degree 1 1/16 - 12 UN
DT-750-MOMF-65 3500 65 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male JIC 37 degree 1 1/16 - 12 UN
DT-750-MOMF-85 3500 85 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male JIC 37 degree 1 1/16 - 12 UN
DT-750-MOMS-1 5000 1 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN
DT-750-MOMS-20 5000 20 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN
DT-750-MOMS-5 5000 5 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN
DT-750-MOMS-50 5000 50 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN
DT-750-MOMS-65 5000 65 Male SAE O-ring Straight Thread 1 1/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN
DT-500-FSMS-5 5000 5 Female Seal-Lok 13/16 - 16 UN Male Seal-Lok 5000
DT-750-MMMS-5 5000 5 Male Metric 1 3/16 - 12 UN Male Seal-Lok 1 3/16 - 12 UN

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