Hydraulic Thermal Bypass Valves - TH Series | Product Series

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Hydraulic Thermal Bypass Valves - TH Series

Hydraulic Thermal Bypass Valves - TH Series

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Parker's thermal bypass valves modulate fluid temperature by shifting return line flow through the cooler, or bypassing it directly to the reservoir.

Technical Specifications

  • For Fluid Type: Hydraulic Oil
  • Maximum Operating Pressure: 250 psi
  • Maximum Flow Rate: 60 gal/min
  • Maximum Operating Temperature: 255 °F
  • Flow Rate: 60 gal/min
  • Minimum Operating Temperature: -30 °F
  • Valve Port Size: 1 inch
  • Actuation Type: Mechanical
  • Body Material: Aluminum
  • Function: Diverter
  • Seal Material: Elastomeric
Safety Warning

Full Product Description

TH Series Thermal Bypass Valves are used to modulate fluid temperature by shifting return line flow through the cooler, or bypassing it directly to the reservoir. Additionally, an integral pressure relief function automatically releases excess pressure to the reservoir if the cooler becomes restricted, and the inlet pressure becomes excessive. Relief crack pressure settings range from 5 to 85 psi in 5 psi increments. The TH Series is available in 1"" size and rated for pressures up to 250 psi with a max flow rate 60 gpm. There are five standard shift temperatures.

Technical Characteristics:
• Valve Size: 1""
• Material: Aluminum
• Weight: 2.0 lbs
• Port Ends: Female SAE O-Ring Boss
• Standard Crack Pressure Setting Options: 5 to 85 psi (in 5 psi increments)
• Standard Shift Temperature Options (°F): 100°, 120°, 140°, 160°, 180°
• Full Shift Temperature (cooler port open): Shift temperature plus 25°F
• Proof Pressure: 300 psi (21 bar)
• Minimum Burst Pressure (up to full shift temperature): 325 psi (22 bar)
• Minimum Burst Pressure (above full shift temperature): 600 psi (41 bar)
• Operating Temperature: Min= -30°F, Max= Shift temperature plus 75°F
• Max Flow Rate: 60 gpm (227 l/m)

Markets:
• Construction
• Agriculture
• On and Off Road Equipment

Features/Benefits:  
• Ideal for hydrostatic drive circuits requiring fast warm up, controlled fluid temperatures, and low return line back pressure.
• Lightweight, corrosion resistant aluminum housing
• Integral relief valve dumps excess inlet pressure to the reservoir
• Five standard shift temperature options
• Wide range of crack pressure options from 5 to 85 psi

Applications:  
• Hydrostatic drive circuits

Related Documents

Literature and Reference Materials
Catalog 3800 Quick Coupling Products
Fluid Compatibility Chart
Port End Assembly Guide
Compliance, Certifications & Safety
Safety Guide: Quick Couplings and Related Accessories
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Products Shift Temperature (F) Cracking Pressure (psi) Thread Type Connection Thread Size (inch)
TH-1000-12FO-76 160 80 Female SAE ORB 1 1/16 - 12 UN
TH-1000-16FO-05 100 25 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-10 100 50 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-13 100 65 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-25 120 25 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-30 120 50 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-33 120 65 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-45 140 25 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-50 140 50 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-53 140 65 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-65 160 25 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-70 160 50 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-73 160 65 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-85 180 25 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-93 180 65 Female SAE ORB 1 5/16 - 12 UN
TH-1000-16FO-23 120 15 Female SAE ORB 1 1/16 - 12 UN
TH-1000-16FO-26 120 30 Female SAE ORB 1 1/16 - 12 UN
TH-1000-16FO-28 120 40 Female SAE ORB 1 1/16 - 12 UN
TH-1000-16FO-36 120 80 Female SAE ORB 1 1/16 - 12 UN

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