Universal pump over-pressure valve (OPV) 12 bar — 1/8″ thread, Viton® seal
Part no. ET-100220
Universal over-pressure valve (OPV) set at 12 bar, with a 1/8″ male thread, Viton® seal and stainless-steel spring. It fits on the pump outlet and bleeds off excess circuit pressure, protecting the group, the boiler and the fittings. Universal mounting on professional espresso machines.
Prices and availability on request. We reply in English or Portuguese.
Specifications
Type
over-pressure valve (OPV — Over Pressure Valve)
Operating pressure
12 bar
Thread
1/8″ male
Components
gasket Viton heat-proof + spring stainless steel
Application
protection circuit pump and boiler
Installation
universal
FAQ
Will it fit my machine?
Mounting is universal. What must match is the 1/8″ male thread and the working pressure of the pump; compare it with the current valve before ordering.
What does an OPV actually do?
It caps the maximum pressure in the circuit. When the pump goes past 12 bar — with a very fine grind or a closed group — the valve opens and returns the surplus flow, sparing seals and tubing from pressure spikes.
Why 12 bar if I brew at 9 bar?
The OPV is a safety device, not a brew-pressure regulator: it opens above normal working pressure. A 12 bar setting leaves room for the usual 9 bar and only clips the peaks.
Which materials are the seal and spring?
The seal is Viton®, which withstands high temperature and hot water, and the spring is stainless steel — a pairing that keeps the setting stable over many cycles.
When should it be replaced, and how do I order?
A constant drip at the discharge, an unstable gauge reading or pressure loss during extraction point to a worn seat or seal. Use Request a quote and we will reply with availability and lead time. We ship from Portugal to the whole of Europe.
All brand names are registered trademarks of their respective owners and are used solely to indicate part compatibility. ESPRESSOTECHNIC is not an authorised representative of these brands unless expressly stated otherwise.
