Rows of industrial valves serviced by Dupill Group
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Capability 01

Valve Services

Repair, testing, actuation, and qualification for every valve type — back to OEM spec, in the shop or in the field.

NBIC "VR" & "TO" certified

Every valve.
Every type.

With our VR certification we repair, set, and test ASME Section I and Section VIII PRVs — air, liquid, or steam, shop or field. Everything comes back to OEM spec, so you stop paying for the same repair twice.

National Board NBIC code stamp National Board VR code stamp National Board TO code stamp National Board
certified
Dupill Group technician servicing a valve in the field
In the shop · In the field · On call 24/7
Dupill Group crew rigging a valve assembly for repair
Field repair & testing

Whatever the valve
needs.

01Inline seat repair & seat narrowing+
We machine and re-face a valve's sealing surface — the "seat" — right in the line, without removing the valve, and narrow the seat's contact band for a tighter, longer-lasting shutoff.
02Valve packing & assembly+
We replace the packing that seals the valve stem against leaks, then reassemble and set the valve to specification.
03In-body machining+
Precision machining performed inside the valve body itself — restoring worn bores, guides, and seats back to original tolerances.
04Welding & hard-facing+
Weld repair of valve components — including applying a hard, wear-resistant alloy overlay (hard-facing) to seating surfaces so they last far longer.
05Inline testing+
We test and verify valve performance while it stays installed in the line — cutting downtime and extra handling.
06Actuation & qualification+
We fit and set the actuator that opens and closes the valve, then qualify the assembly to the required code and performance criteria.
Pressure relief & safety valves

Set to spec.
Every time.

National Board VR certified for all Section I and Section VIII safety valves — tested on air, nitrogen, water, and steam. One source for new, replacement, testing, and repair, shop or field.

AirNitrogenWaterSteamShop & Field
VR·R
National Board stamps
I & VIII
ASME sections tested
24/7
Outage response
5
U.S. service hubs
Mobile machine shop

We bring the
shop to you.

Two custom-outfitted trailers — a 53′ semi machine shop (mill, 22″/26″ swing lathe, certified 8,000-lb overhead crane, PRV test and vacuum-test units) and a 28′ mini machine shop — fully equipped for on-site safety-relief-valve testing and valve repair, ready for your next outage.

On-Site SRV TestingField RepairOutage-Ready
Dupill Group custom-outfitted mobile machine shop trailer
Dupill Group outage crew on site
Outage support

A short window is
no room for error.

Our crews own the whole scope — valve, actuator, controller, or accessory — with OEM parts from certified vendors and a fully equipped mobile shop. Walkdowns, pre-outage planning, a Challenge & Review Board, JIT training, in-line repair, oversight, and reporting.

Plan your next valve scope.

Repair, testing, actuation, or outage support — from five U.S. locations, on call 24/7.

We'll get back to you within 24 hours