Bladder and Repair Kit NXQa-40 31.5 L-Y

Bladder and Repair Kit NXQa-40/31.5 L-Y & Jet-Tube Electro-Hydraulic Servo Valve 072-2623 Maintenance Guide
Product Introduction
Bladder and Repair Kit NXQa-40/31.5 L-Y is a key accessory for accumulators in hydraulic systems, matching the 072-2623 jet-tube electro-hydraulic servo valve. The valve requires rapid response for single frequency adjustment, relying on precise jet tube, fast feedback and clean oil.

Jet Tube Installation & Precision Requirements
Nozzle and receiving hole of the jet tube are core components.
Machining accuracy must reach 0.01 mm.
Installation centering deviation ≤0.05 mm; exceedance causes off-center oil column.
Off-center oil column leads to sluggish valve core movement.
Use a special centering tool for calibration.
Ensure the oil column hits the center of the receiving hole accurately.

Feedback Mechanism Maintenance
072-2623 adopts force feedback mechanism; feedback rod stiffness is key.
Excessively stiff rod = slow feedback; overly soft rod = easy deformation.
Regularly check for feedback rod bending.
Straighten bent rods instead of direct replacement to save costs.

Oil Cleanliness & Regular Calibration
Fire-resistant oil cleanliness must be NAS 6 or higher.
Oil impurities clog nozzles and hinder jetting.
Replace inlet filter every two months with specialized tools.
Avoid oil contamination during filter replacement.
Regularly calibrate servo valve gain with small signals (e.g., 1% command).
Check if valve core displacement keeps up with commands.
Required resolution: 0.1% for rapid response to 0.5% load changes.

Brand Info
YOYIK regards innovation as the core driving force for development.
Increases R&D investment and establishes an advanced R&D center.
Focuses on improving product performance, efficiency, and reducing energy consumption.
Cooperates with domestic and foreign scientific research institutions and universities.
Explores cutting-edge technologies and promotes industry technological innovation.

The above is for reference only. Please contact me via email for specific details.

The following are various spare parts options that our company can provide for power facilities.
#DF-BLADDER AND REPAIR KIT　NXQa-40/31.5 L-Y-DF
mechanical seal M7N-90
Lubricating oil station air bag BNXQA-10/10-F-Y
unloading valve CVC-25-A
Bladder NXQA-25L
Fire resistant fuel recirculation pump F3 V10 1S6S 1C20
Frequency conversion controller SBK-90
pressure relief valve YSF12-70/80-KJ
pressure relief valve YSF8-55/25-KJTH
solenoid valve SH736001A0815
globe throttle check valve KJC100C-2.5P
Sealing ring/O-ring TRd8.687.524
accumulator bladder SB330-50A1/114A9-330A
OPC solenoid valve coil Z6206060
PROPORTIONAL VAE D631-271C
The electromagnetic valve SV4-10-0-0-220AG
Machinery Seal ACF090
Pressure reducing valve AW40-N03B-2-X419
Bellows valves WJ41H-16P
RELIEF VAE DB20G-2-L5X/5U/2
Oring A156.33.01.10-50X3.1
Accumulator NXQ-AB-10/10
High temperature and high pressure valve SS-6NBS12mm-G
Fluorine rubber O-ring φ57*4
Stop valve J65Y-630V
Stop valve J61H-40
Pressure measuring joint SMK20
Stop valve J41H-16P
Airside seal oil pump HSG940*4-42
solenoid valve J-110VDC-DN10-DOF/20D/2N
OPC solenoid valve 4WE10D-L3X/CW220-50NZ5L/V
injection solenoid valve MFZ8-90YC
BLADDER AND REPAIR KIT　NXQa-40/31.5 L-Y

Valve PADS21500PS
Skin NXQB10/10-F-E
Electric stop valve J961Y-P5540V
AST solenoid valve SDHE-0631/2 10S/PE W20 Y16 AHC2 ST50
pressure relief valve YSF8-55/25-TH
sealing ring HB4-56J8-03
Pump oil seal KCZ50/200A-18.5/2
Pipe clamp SP542PADP-AS
EH oil filter vacuum pump PRVB20H
valve DBEM10-7X/200YG24K4M
Stop valve J61Y-P54.5150V
Relief valve D DBDS20K18/200
Joint CSHM 14×1.5
Electromagnetic valve 165.31.56.03.02
pressure relief valve YSF16-35/130-KJTH
Pump CB-B40
Fluorine rubber ring C8689554
Water separator LYSF-2
Three-way valve J21Y-P55150P 12Cr1MoV
plunger pump A10VS045DR/31R-PPA12N00
Transmission bevel gear (right) CO46-09-15
RSV1 trip solenoid valve 19YV
sealing ring φ56.8*3.1
MECHANICAL SEAL (NDE) LTJ-GJ-125A/L
Governor O-ring DH00.047
Steam turbine actuator servo valve MOOG-743F-003A
Manual gate valve Z41H-40
solenoid valve S333CH98V4BC5
MOOG valves D631-055C
mechanical seal DFB80-50-20
globe check Throttling valve LJC10-16
BLADDER AND REPAIR KIT　NXQa-40/31.5 L-Y

DFYLCTY-2026-1-14-A