Pietro Fiorentini Terval Pressure Regulator Technical Data Sheet

Technical documentation for the Pietro Fiorentini Terval pressure regulator, detailing construction, pilot types, dimensions, and specifications for…

Brand: PIETRO FIORENTINI
Category: Other
Document type: User Manual
Language: Russian
Pages: 12
File format: PDF
File size: 1.4 MB
Published: 05 November, 2026
Updated: 05 November, 2026
MD5 checksum: 1B7680471A83BBD80AAD1C5F46AA714E
PDF: Pietro Fiorentini Terval Pressure Regulator Technical Data Sheet PDF

About this manual

The document describes the Terval pressure regulator, a pilot-operated device designed for medium and low pressure applications with non-corrosive gases. It features a compact modular construction that integrates the main regulator, an emergency 'monitor' safety device, and a shut-off valve within a single body. Two versions are available: Terval (fail-open regulator, fail-closed monitor) and Terval/R (fail-closed for both). This manual is written in Russian.

What's inside

Construction and Features
Pilot Types and Adjustments
Materials and Components
Dimensions and Weights
Pressure Ratings
Flow Coefficients
Options and Accessories

Specifications

Gas Temperature Range	-10°C to +60°C
Body Material	Cast Steel ASTM A216 WCB
Nominal Diameter Sizes	2" - 4"
Flange Class	ANSI 150 RF

Frequently asked questions

What are the two versions of the Terval regulator?

The Terval version has a fail-open regulator and a fail-closed monitor, while the Terval/R version has both the regulator and monitor set to fail-closed.

Can the noise suppressor be added later?

Yes, thanks to the modular design, the noise suppressor can be installed on a standard version or a version with a shut-off valve without changing the pipeline.

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