About Us

VALVULAS NACIONAL, S.A. was established in Spain in 1976 with the aim to assist the petrochemical and chemical industries emerging in Spain at that time.

Right from the start VALVULAS NACIONAL, S.A. has been designing and producing safety valves according to the most recognized international standards and regulations: API, ASME, AD 2000-Merkblatt, ISO-4126 together with the European directives 97/23 & 94/9 CE.

Our production process is accredited by an ISO 9001-2008 certification:

Main Design
ASME VIII- Div. I
API STD 526
ISO 4126
AD 2000 – MERKBLATT A2

Calculation
API RP 520
ASME VIII
ISO 4126
AD MERKBLATT  2000

Materials
ASTM
UNE-EN
DIN

Tests
ASME VIII- Div. I
API STD 527
ISO 4126-1
UNE-EN 1593
AD 2000 – MERKBLATT A2

Our Coefficients of discharge are duly certified.