FLEU's quality assurance system is ISO 9001 and POKA YOKE System.  All our factories have been audited by TUEV.

The main control include documents, procurement of materials, production processes, tests and inspections, calibration of tools and equipments, non-conforming products and corrective actions for non-conformance.

Different materials and valve performance tests can be done by FLEU, such as X-Ray, impact test +20 Grade to -196 Grade, mechanical property - 45 Grade to +400 Grade, TA Luft Test from -196 Grade to +425 Grade, torsion test, fire- safety and so on.

Through the most stringent test and inspection procedures, FLEU can ensure that materials and performance can meet all the applicable test standards. At the final assembly,FLEU valves are subjected to 100% pressure tests to ensure reliability.

FLEU always do all the effects to make Environmental Friendliness Production and products. Today all FLEU valves can fulfill German TA Luft Clean Air Act Amendments, not only through the Design but also through using the Germany patented emission-free packing sets.

For every shipment, FLEU can provide the 3.1 report or 3.2 report by TUEV.

Certificates for valves:

DIN EN ISO 9001:2015 TÜV

DGRL 2014/68/EU (CE0036) TÜV

AD 2000-Merkblatt HP 0 TÜV

AD 2000-Merkblatt A4 and EN ISO 3834-2 TÜV

Euro Chlor Certificates 16-01 and 19-01

ISO 15848-1:2015 - Ball valves, Bellows globe valves, Gate valves TÜV

TA-Luft VDI2440 - Ball valves, Bellows globe valves, Gate valves TÜV

Fire safe API 607 Ball valves BV

ISO 10497 Gate valves TÜV

ISO 10497 Swing check valves TÜV

ATEX for valves

IEC 61508 declaration of conformity



API 600

Certificate of TA-Luft packings used for gate&globe valves




14000 Certificate

18000 Certificate

ABS Design

ABS Manufacture


API 607

API 591


ISO 15848-1-Cryogenic valves

Shell 77-307

Shell 77-312

Certifikats for valves casting parts:


DGRL 97/23/EG (CE0036) for investmens casting TÜV

AD2000-Merkblatt W0 for investmens casting TÜV

DGRL 97/23/EG for sand casting

AD2000-Merkblatt W0 for sand casting
Suzhou Fleu Valve Co., Ltd.
No.767 Huagang Road
Wujiang Area
215200 Suzhou/China
Tel : 0086 512 63437689
Fax: 0086 512 63409789