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HYDAC offers a wide range of direct acting and pilot operated Relief and Reducing Valves. In general, the direct acting valves are faster in response while pilot operated valves have flatter pressure/flow characteristics.

HYDAC Relief Valves are available in direct acting poppet and pilot operated spool types with optional pressure adjustment ranges up to 6000 psi (420 bar). Models are available for flow rates up to 80 gpm (300 l/min).

A screw-in cartridge, direct acting, poppet type relief valve intended for use as pressure limiting device in hydraulic circuits which require low internal leakage and fast response to pressure changes.

Specifications

Type

 N/A Screw-In Cartridge Pressure Relief Valve

Style

 N/A Pressure Relief, Direct Acting, Poppet Type

Model Code Description

 N/A DB08A-01-AS6-N-180H

Valve Model

 N/A DB08A-01

Ports

 N/A SAE-6

Body

 N/A Aluminum

Seals

 N/A Buna-N

Adjustment Range

 N/A 14 to 125 bar

Adjustment Options

 N/A Knurled Hand Knob

Optional Setting

 N/A Set at Minimum Pressure for the Range

Operating Pressure

 N/A 420 bar

Maximum Flow Rate

 N/A 38 L/min

Internal Leakage

 N/A 5 drops/min. (0.25 cc/min) Maximum to 80% of Nominal Setting

Nominal Reseat Pressure

 N/A 80% of Crack Pressure

Actuated Spring Pressure at 1 Revolution

 N/A 18 %

Minimum Fluid Operating Temperature

 N/A -20 ºC-4 ºF

Maximum Fluid Operating Temperature

 N/A 120 ºC248 ºF

Fluid Compatibility

 N/A Mineral-Based or Synthetics with Lubricating Properties

Viscosity

 N/A 7.4 to 420 cSt50 to 2000 SUS

Filtration

 N/A 21/19/16 or Cleaner (Per ISO 4406), Use with Filter Rated ß10 ≥ 200

Installation

 N/A No Orientation Restrictions

Cavity

 N/A FC08-2

Cavity Tools (Rougher)

 N/A 02580090

Cavity Tools (Finisher)

 N/A 02580091

Cartridge Weight

 N/A 0.220 kg68 g

Cartridge Material

 N/A Steel

Work Surface

 N/A Hardened

Exposed Surface

 N/A Zinc Plated

O-Ring Material

 N/A Buna-N or Viton®

Back-Up Ring Material

 N/A Polytetrafluoroethylene (PTFE)

Knob Material

 N/A Anodized Aluminum

Seal Kits

 N/A FS082-N, P/N: 03033920

Pressure Compensation

 N/A Pressure Relief

Action Type

 N/A Direct

Number of Ports/Ways

 N/A 6

End Type

 N/A SAE Port

Valve Operator

 N/A Knurled Hand Knob, Pilot

BUn

 N/A EA

Operation

N/A The DB08A blocks flow from port 1 to port 2 until the pressure setting is reached at port 1 to lift the spring opposed poppet from its seat, allowing flow from port 1 to port 2. Pressure at port 2 is directly additive to valve pressure setting. Flow from port 2 to port 1 is checked.

Features

N/A

  • Screens to protect pilot orifice from contamination and ensure reliable operation
  • Variety of adjustment mechanism options
  • Spring ranges up to 6000 psi (420 bar)
  • Positive stop prevents spring from over adjustment
  • Adjustable under full pressure
  • Stroke limiting device for enhanced safety
  • Fast response with excellent stability
  • All external surfaces zinc-plated
  • Hardened poppet to ensure minimal wear and extend service life
  • One piece body maximizes reliability and minimizes the effects of eccentricity
  • Industry common cavity