Models PK (up to 96 MPa — size 003..PK) with a wide U-shaped tube type and P (from 10 MPa) — solutions for the most demanding high-pressure applications. Optimised for hydrogen service, they offer high accuracy at low flow rates. Support for UNF, VCO/VCR connections.
Design PK is intended for applications requiring flow measurement at extremely high pressures up to 96 MPa (size 003..PK). The wide U-shaped tube configuration provides high sensitivity and accuracy even at minimum flow rates.
Design P is intended for systems with operating pressures above 10 MPa, including refuelling and dosing of hydrogen and other high-pressure gases. Medium temperature range −50…+150 °C, sizes 001..P–025..P (DN01–DN25) and 100..P (DN100). High sensitivity and stability at low flow rates ensure precise control under high pressure.
The use of a special composite metal resistant to hydrogen embrittlement makes designs P and PK the optimal choice for hydrogen energy, fuelling stations and H₂ dosing systems. The smooth inner surface of the tubes minimises hydraulic resistance and ensures stable measurement even at minimum flow rates.
Appearance of the PK ultra-high-pressure and P high-pressure models
Operating pressure for all high and ultra-high pressure models
| Size | Operating pressure, MPa | Note |
|---|---|---|
| 003..PK | ≤ 96 / ≤ 70 / ≤ 50 / ≤ 40 | ≤96 MPa — 9/16–18 UNF thread; ≤70, ≤50 and ≤40 MPa — other connection types |
| 004..PK | ≤ 35 | 9/16–18 UNF thread |
| 008..PK | ≤ 30 / ≤ 45 | ≤30 MPa — 3/4″ fitting; ≤45 MPa — UNF 13/16–16 thread |
| 015..PK | ≤ 30 / ≤ 25 / ≤ 45 | ≤30 MPa — 3/4″ fitting; ≤45 MPa — UNF 13/16–16 thread |
| 025..PK | ≤ 45 | — |
| Size | Maximum pressure, MPa | Note |
|---|---|---|
| 001..P | ≤ 45 MPa | Confirmed at ordering |
| 002..P | ≤ 20 MPa | Confirmed at ordering |
| 003..P | ≤ 45 | NPT 1/4″ thread |
| 004..P | ≤ 30 | NPT 1/4″ thread |
| 008..P | ≤ 45 / ≤ 30 | ≤45 MPa — UNF 13/16–16 thread; ≤30 MPa — depending on the connection type |
| 015..P | ≤ 30 / ≤ 35 | G 3/4″ |
| 025..P | ≤ 45 | — |
| 100..P | — | Confirmed at ordering |
** Maximum operating pressures are given. The specific value depends on the design and connection type (UNF, VCO, VCR — by default). Please confirm at the time of order depending on the operating conditions.
PK and P designs support various types of high-pressure connections. The connection can be changed at the customer's request.
Unified fine thread — the standard for high-pressure connections
Conical O-ring seal — leak-tight sealing at high pressures
Metal seal — leak-free service for critical media
On request, confirmed at ordering
Tapered thread — for sizes 003..P and 004..P
Unified fine thread — for size 008..P (≤45 MPa)
Cylindrical pipe thread — for size 015..P (≤30/35 MPa)
On request, confirmed at ordering
We will select the optimal Mass-EXPERT configuration for your facility.
We will contact you shortly.
