Product Overview

This 723-40-70100 self-pressure reducing valve block assembly is a sturdy aftermarket hydraulic component built for Komatsu construction machinery. It consists of a valve block body plus attached pressure reducing and overflow subassemblies, weighing roughly 14.7 kg. Its core function is converting high-pressure hydraulic oil from the main pump into stable low-pressure oil for joystick and pilot control operations. Full technical parameters are listed on our dedicated spec sheet for reference. Made to withstand tough working environments, this valve assembly delivers long service life and reliable pressure regulation to minimize unexpected machine downtime. It is a core component for Komatsu -6 series excavators and also compatible with selected -7 series machines and mobile crushers, including PC200-6, PC200-6H, PC200-6Z, PC210-6, PC220-6, PC240-6, PC60-7, PC300-6, PC400-6 excavators and BR200S-1, BR200T, BR210JG-1, BR250RG, BR350JG-1 mobile crushers. It can be cross-referenced with part number 6014232 and works with internal valve cartridges 702-21-09147 and 702-21-55310 for hydraulic system repairs.

FAQ

Q1: What common faults indicate I need to replace this 723-40-70100 pressure reducing valve block assembly?

A: Common symptoms include unstable pilot pressure, sluggish joystick response, weak machine movement, fluctuating hydraulic pressure, and loss of pilot control power, which may occur due to internal wear or component failure inside the valve block.

Q2: Which machines does 723-40-70100 fit?

A: Excavators: PC200-6, PC200-6H, PC200-6Z, PC210-6, PC220-6, PC240-6, PC60-7, PC300-6, PC400-6 Mobile Crushers: BR200S-1, BR200T, BR210JG-1, BR250RG, BR350JG-1

Q3: What are the core parameters of this valve block assembly?

Q4: What cross reference & matched part numbers are available?

A: Cross part: 6014232; matched internal cartridges: 702-21-09147, 702-21-55310.