Reliability by design

Valves manufactured under our design have high disponibility
They have been designed under principle SIL3

SFF

λsd

λdd

PFDav

MTBF

98.2%

3.72 E-7

2.01 E-8

3.2 E-5

13,7years

TI

λsu

λdu

MTTR

DCd

5 years

4.19 E-7

1.47 E-9

2 hours

66.7% 

  SFF = SafeFailure Fraction(Taux de défaillances non dangereuses
  λsd = not dangerous failure
  λdd = dangerous failure
  λsu = unknon not dangerous failure
  λdu = unknown dangerous failure
  PFDav = Probability (average). dangerous failure under sollicitation
  TI(in years)=5years(60 months)
  DCd = Diagnostic dangerousity
  MTBF = Mean Time Between Failure
  MTRR = Mean Time To Recovery = 2 hours
  (MTRR valve alone is 20minutes;, out  removing and installation on pipe)

Reliability saves investment

Buying low quality valves could shutdown your installation, who can afford such luxury?
It is even more real, under extrem climatic conditions,  if site is far or on offshore platform.
Reliability is linked to valve design and to manufacturing process.

Valves should fullfilled four functions:
1- Environnement protection regarding leakage or explosion.
2- Optimum duty during the longest period.
3- Maximum duty under degraded mode.
4- Fast and easy maintenance.

  • MPSA valves body is a monobloc cylinder  with only 1 hole for axe.

  • Seals have been tested 32000 strokes under delta P max.

  • Internals are stainless steel without welding.

  •  Valves are grease free and without maintenance .