Title

M‑SR Series Cartridge Check Valve

Meta Short Description

M‑SR poppet‑type cartridge check valve, sizes NG8‑30, leak‑free reverse sealing, multiple cracking pressure options, ISO9001 & CE certified for manifold block hydraulic circuits.

M‑SR Series Cartridge Check Valve

Overview

M‑SR series (M‑SR…KE‑10B/) are poppet‑style cartridge‑mounted check valves for installation inside hydraulic manifold blocks. It permits free‑flow oil passage in one direction and provides leak‑tight shut‑off in reverse direction. Equipped with built‑in return spring, six cracking pressure grades are selectable to satisfy different circuit requirements. Widely used for pump outlet back‑pressure control and bypass protection circuits. Available nominal sizes: NG8, NG10, NG15, NG20, NG25, NG30. Max operating pressure up to 31.5 MPa, maximum flow rate up to 400 L/min. Manufactured under ISO9001 quality management system and CE certified.

Drawing Reminder for Independent‑site Upload Please attach two technical drawings in product gallery:

1. Dimension / installation bore drawing (outline size drawing, unit mm)
2. Technical specification table & hydraulic symbol drawing

Key Features

• Cartridge poppet structure, installed within manifold blocks
• Nominal sizes: NG8, NG10, NG15, NG20, NG25, NG30
• Zero‑leak reverse closing performance
• 6 optional cracking pressure settings
• Low‑pressure loss for forward flow
• Compact cartridge design, saves manifold space
• Optional NBR / FKM sealing material
• ISO9001 & CE certified

Technical Data

表格

Item	Parameter
Valve Type	Cartridge poppet check valve
Sizes	NG8, NG10, NG15, NG20, NG25, NG30
Max Working Pressure	31.5 MPa
Max Flow	400 L/min
Cracking Pressure	Multiple optional grades
Hydraulic Fluid	Mineral hydraulic oil, phosphate ester fluid
Fluid Temperature	‑30 ℃ ~ +80 ℃
Viscosity Range	2.8‑500 mm²/s
Fluid Cleanliness	NAS1638 Class 9 or better
Mounting Position	Arbitrary

Applications

Suitable for hydraulic power units, injection moulding machines, hydraulic presses, metallurgical equipment, construction machinery. Mainly applied for pump outlet back‑pressure holding, bypass safety protection and one‑way flow locking inside manifold block circuits.

Notes

• System oil filtration must meet specified cleanliness requirement to extend service life
• Select correct cracking‑pressure spring according to actual circuit working condition
• Installation bore dimensions shall comply with corresponding cartridge cavity drawing