Gate, ball, butterfly, globe, check and control valves machined and pressure tested
in one plant, supplied with the dimensional and material records the line file needs.
Each family is built around a duty: shut-off, throttling, non-return or modulation. Pick the duty first and the body, trim and end connection follow from it.
The same body casting becomes four different valves depending on the medium, the temperature and how often the line is cycled.
01
Oil and gas
Pipeline and process isolation where the valve has to be proved shut before anyone opens the line. Trunnion ball valves with double block and bleed, and full bore gate valves for pigged sections.
02
Power generation
Main steam, boiler feed and high pressure drains. Pressure seal bonnets and hardfaced trim, because a bolted joint that has to be retorqued after every thermal cycle is not a solution.
03
Water and wastewater
Large bore isolation on pump halls and distribution mains, where face-to-face length and the weight a support has to carry usually decide between a gate valve and a butterfly valve.
04
Chemical process
Corrosive and abrasive media, frequent cycling and duties that modulate rather than switch. Stainless and duplex bodies, hardfaced seats, and control valves sized against the real flow range.
How an order runs
From a line spec to a documented valve
01Specify
02Machine
03Test
04Document
01
Specify
Line size, design pressure and temperature, medium, and how the valve has to fail. That is enough to fix the pressure class, the body material and whether the trim needs hardfacing.
02
Machine
Bodies and bonnets are machined on CNC lathes and machining centres against the dimensional standard the drawing calls up, so seat pockets, flange facings and stem bores repeat batch to batch.
03
Test
Every valve is shell and seat tested on the bench before it is painted. Pressures, hold times and the result are written down against the body serial number.
04
Document
Material certificates, the test record and the dimensional sheet ship with the valve, so the line file is complete on the day it arrives rather than months later.
05 / Assurance
What ships with the valve
Four things that make a valve auditable
01
Duty review
Medium, pressure, temperature and cycle frequency checked against the body and trim before anything is quoted.
02
Pressure testing
Shell and seat tests to the pressure-test practice named on the datasheet, recorded against the body serial number.
03
Material traceability
Heat numbers carried from the casting or forging through machining to the certificate that ships with the valve.
04
Spares and repair
Seats, seals, gaskets and stems held for the models in production, with repair kits identified by serial number.
Both will shut a line. They fail differently, they cost differently to operate, and only one of them lets you prove the seal.
Read
Talk to an engineer
Send us the line data, not a part number.
Size, class, medium, temperature and how the valve has to fail is enough to work
from. You get a body and trim recommendation and a dimensioned datasheet back.
