Steam Pressure Reducing Valve

Steam Pressure Reducing Valve Manufacturer in Italy – Valvesonly Europe (Germany)

Valvesonly Europe designs steam pressure reducing valves (PRVs) for stable, accurate control of downstream steam pressure in generation and distribution networks. Built in Germany to PED and EN/ASME standards with documented performance testing.

Function & Working

PRVs reduce a higher inlet steam pressure to a controlled outlet setpoint. Direct-acting designs use spring force against a diaphragm; pilot-operated designs use a pilot valve sensing downstream pressure for high accuracy and capacity.

Advantages

Tight outlet pressure control across wide load changes

Options for saturated and superheated steam

Stainless/stellited trims for erosion resistance

Low droop; minimal hunting with pilot-operated types

Optional condensate-resistant internals

Types Offered

Direct-Acting • Pilot-Operated • High-Pressure PRV • Desuperheating PRV (with water injection)

Industries in Europe

Power Generation & District Heating • Oil & Gas Utilities • Chemical & Petrochemical • Pulp & Paper • Marine Steam Systems • Desalination Plants (motive steam)

Materials (Body, Trim, Diaphragm)

Category	Material	Standards / Grades	Typical Use
Cast/Ductile Iron	EN-GJL-250; EN-GJS-400-15	EN 1561/1563	Steam distribution, utility lines
Carbon Steel	WCB	ASTM A216	Boiler outlet & headers
Stainless	CF8/CF8M	ASTM A351	Corrosive condensate
Bronze Options	Tin Bronze	EN/ASTM	Small line PRVs
Trim	304/316/410 SS, Stellite 6	ASTM A182/AWS	Wear-resistant seats/nozzles
Diaphragm	EPDM/NBR or SS diaphragm	—	Control element

Technical Specifications

Size: DN15–DN200 (½″–8″)

Pressure: PN16–PN40 / Class 150–300

Temp: up to 300 °C (material dependent)

Ends: Flanged (EN 1092 / ASME B16.5), SW, NPT/BSP

Standards: EN / ASME, PED

Testing: Functional bench test + EN 12266-1 tightness

Controls: Spring range selection; pressure gauge ports; optional strainer & steam trap assemblies

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