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Products / Gas Distribution / Pietro Fiorentini
Gas Distribution Valves & Pressure Regulators
The Pietro Fiorentini range for natural gas transmission and distribution — Deltaflux trunnion mounted control ball valves rated to ANSI Class 2500, BF 31 and BF 32 gas distribution butterfly valves with hermetic sealing, and direct-operated gas pressure regulators up to 250 bar. Hydrogen ready and EN 334 fail-open, engineered by Pietro Fiorentini and operating in over 100 countries since 1940.
Valvenok supplies a comprehensive range of industrial, marine and instrumentation valves engineered for demanding service conditions across oil & gas, petrochemical, power generation and marine industries. From API-rated process isolation valves to class society approved marine valves and precision SS316 instrumentation valves — every product built for leak-tight, reliable performance.
Deltaflux Control Ball Valve
Pietro Fiorentini Deltaflux trunnion mounted control ball valve for flow rate and pressure modulation across Oil & Gas, LNG, hydrogen, and water management applications. Quarter-turn trim delivers high Kv with minimum pressure drop in fully open position. Available in standard, welded body, and top-entry configurations.
2"–48" | NPS 50–1200
ANSI Class 150–2500
-196°C to +425°C
API 6D / API 6A / API 6DSS
SIL 2 / PED 2014/68/EU
API 607 Fire Safe
BF 31 Butterfly Valve
Pietro Fiorentini BF 31 butterfly valve for medium and low pressure gas distribution networks. Hermetic internal seal, 360° butterfly rotation for self-cleaning, chromium-plated spherical seat for low control torques and long service life. Rated to 16 bar UNI PN16 / 19 bar ANSI 150 RF.
DN 300–600 | 12"–24"
16 bar (UNI PN16) / 19 bar (ANSI 150 RF)
Hermetic Internal Seal
360° Self-Cleaning Rotation
NBR / FKM Sealing Options
BF 32 Butterfly Valve
Pietro Fiorentini BF 32 butterfly valve for medium and low pressure gas distribution. Features dual sealing rings with leak-check port, chromium-plated spherical seat, and 360° self-cleaning rotation. Rated to 16 bar UNI PN16 / 19 bar ANSI 150 RF across DN 50–250.
DN 50–250 | 2"–10"
16 bar (UNI PN16) / 19 bar (ANSI 150 RF)
Dual Sealing Rings
In-Line Seal Check Port
VITON Standard / NBR on Request
Gas Pressure Regulators
Pietro Fiorentini direct-operated gas pressure regulators for high-pressure transmission systems and medium pressure natural gas distribution networks. Diaphragm-controlled and classified Fail Open per EN 334, with Hydrogen Ready and 100% H₂ versions available across the range.
Up to 250 bar Design Pressure
EN 334 — Fail Open
H₂ Ready / 100% H₂ Option
ASME B16.5 CL 300 / 600 / 1500
Biomethane Compatible
4 Models
Up to 250 bar
Max Design Pressure
ANSI CL 150–2500
Pressure Classes
EN 334 · API 6D
Design Standards
H₂ Ready
Hydrogen Compatible
Ball · Butterfly · Regulator
Product Range