Title

DBDS‑K Series Cartridge Direct‑Acting Relief Valve

Meta Short Description

DBDS‑K direct‑acting cartridge relief valve, sizes NG6‑30, multiple pressure grades, three adjustment styles, ISO9001 & CE certified for hydraulic safety pressure‑limiting circuits.

DBDS‑K Series Cartridge Direct‑Acting Relief Valve

Overview

DBDS‑K series are direct‑acting poppet / ball‑type cartridge relief valves for installation inside hydraulic manifold blocks. This series covers nominal sizes NG6, NG8, NG10, NG15, NG20, NG25, NG30. Seven optional pressure grades: 2.5 MPa, 5 MPa, 10 MPa, 20 MPa, 31.5 MPa, 40 MPa, 63 MPa. Three pressure adjustment configurations are available: hexagon adjustment bolt with protective cap, adjusting handwheel, lockable handwheel (lock‑type only for NG6 / NG8 / NG10). Compact cartridge‑style structure features stable pressure performance, low noise and good flow characteristics. Mainly used as safety relief valve and remote control valve for small‑to‑medium flow hydraulic systems. ISO9001 and CE certified.

Independent‑site drawing upload reminder Add the following drawings to product image gallery:

1. Cartridge outline & installation cavity dimension drawing (unit: mm)
2. Pressure‑flow performance characteristic curve
3. Hydraulic schematic symbol & internal cross‑section drawing

Key Features

• Nominal sizes: NG6, NG8, NG10, NG15, NG20, NG25, NG30, cartridge manifold mounting
• Multiple pressure grades from 2.5 MPa up to 63 MPa
• 3 adjustment options: protected hex bolt, standard handwheel, lockable handwheel
• Poppet structure (max 40 MPa); ball‑type structure (max 63 MPa)
• Compact cartridge design, stable pressure, low noise
• Mineral oil or phosphate ester fluid compatible
• Can be assembled into threaded or subplate valve body
• ISO9001 & CE certified

Technical Data

表格

Item	Specification
Valve Type	Cartridge direct‑acting relief valve
Sizes	NG6, NG8, NG10, NG15, NG20, NG25, NG30
Max Working Pressure	P port up to 63 MPa; T port up to 31.5 MPa
Max Flow Rate	50‑330 L/min (depends on nominal size)
Pressure Grades	2.5 / 5 / 10 / 20 / 31.5 / 40 / 63 MPa
Hydraulic Fluid	Mineral hydraulic oil, phosphate ester fluid
Fluid Temperature	‑30℃ ~ +80℃
Viscosity Range	10‑800 mm²/s
Recommended Filtration	≤20 μm
Mounting	Cartridge installation into manifold block

Applications

Widely used for hydraulic power units, hydraulic presses, injection‑molding machines, metallurgical and construction machinery. Applied as safety overload protection valve and remote pilot relief valve for hydraulic circuits.

Notes

1. Hydraulic fluid filtration accuracy shall reach at least 20 μm to extend service life.
2. Manifold mounting cavity dimension must strictly follow cartridge drawing requirements.
3. Select corresponding spring according to target working pressure grade.
4. Manifold mounting surface flatness: 0.01 mm /100 mm, surface roughness Ra0.8.