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Pressure Control Valves

TR04-B20 — Thermal Relief, Poppet-Type Valve

Selection guide - similar valves.
PDF file of this page.
STP file for TR04-B20.
Request a quote.

TR04-B20 Valve

TR04-B20 Valve symbol

A screw-in, cartridge-style, poppet-type, thermal relief valve intended to prevent cylinder damage resulting from temperature induced pressure intensification. This valve is not intended to be used as a dynamic relief valve, or as protection against load-induced pressure spikes.

The TR04-B20 blocks flow from 1 to 2 until sufficient pressure is present at 1 to force the spring-opposed poppet from its seat. Pressure at port 2 should never be more than 500 psi above the pressure at port 1.

• Miniature size.
• Hardened parts for long life.
• Below-surface mount.
• Low Leakage.

Operating Pressure: 414 bar (6000 psi) maximum
Internal Leakage: 1 drop/minute to 90% of crack setting
Reseat Characteristic: 10 drops/minute at 85% of pressure setting

Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with Fluorocarbon seals;
   -54° to 107°C (-65°F to 225°F) with Polyurethane seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC04-B2; See page 9.104_2w
Cavity Tool: CT04-B3xx; See page 8.600.1
Seal Kit: SK04-B2x-B; See page 8.650.1

TR04-B20 Valve Dimensions


Cartridge: Weight:
0.05 kg. (0.12 lbs.);
Steel with hardened
work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and TFE
back-up standard, polyurethane optional.



TR04-B20 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for TR04-B20 Request a quote.

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