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Product information
Specifications

Check valve REFLUX 919 PIETRO FIORENTINI Vietnam

Introducing one-way valve REFLUX 919 PIETRO FIORENTINI Vietnam

The REFLUX 919 PIETRO FIORENTINI check valve is a control diaphragm valve specially designed for natural gas or other prefiltered non-corrosive gases. It can be supplied in direct action (air to close) or in reverse action (air to open).

This equipment is mainly used in high pressure transmission systems and medium pressure gas distribution networks.

Featured

Design pressure: up to 102 bar
Design temperature: from -20 °C to +60 °C
Range capability: up to 1:1000
Nominal size DN: up to 10"
Connection: Class 150, 300, 600 RF or RTJ according to ASME B16.5 and PN16 according to ISO 7005
Dimensions from end to end: according to EN 334

Technical specifications One-way valve REFLUX 919 PIETRO FIORENTINI Vietnam

Design pressure* up to 10.2 MPa
up to 102 barg
Ambient temperature* from -20 °C to +60 °C
from -4 °F to +140 °F
Inlet gas temperature range* from -20 °C to +60 °C
from -4 °F to +140 °F
Inlet pressure range bpu (MAOP) from 0.1 to 10.0 MPa
from 1 to 100 barg
Range of downstream pressure
when in pressure control mode
from 0.05 to 9.5 MPa
from 0.5 to 95 barg
Pneumatic control loop input
(applicable to pneumatic positioner option)
from 21 to 103 kPa or from 42 to 206 kPa
from 0.21 to 1.03 bar or from 0.42 to 2.06 bar
Electric control loop
(applicable for electro-pneumatic positioner option) 4 ÷ 20 mA
Available Accessories DB/819 Silencer, PM/819 Monitor, SB/82 Slam shut,
HB/97 Slam shut
Nominal dimensions DN DN 25 | 1”; DN 50 | 2”; DN 80 | 3”; DN 100 | 4”;
DN 150 | 6”; DN 200 | 8”; DN 250 | 10”;
Connections* Class 150, 300, 600 RF or RTJ according to ASME B16.5 and
PN16 according to ISO 7005

Material

Body ASTM A 352 LCC cast steel for classes ANSI 600 and 300;
ASTM A 216 WCB cast steel for classes ANSI 150 and PN 16/40
Heads Stamped carbon steel
Stem AISI 416 stainless steel
Plug ASTM A 350 LF2 nickel-plated steel
Seat Carbon steel + vulcanized rubber
Diaphragm Rubberised Canvas (pre-formed by hot-pressing process)
O-rings Nitrile Rubber
Compression fittings Made of zync-plated steel according to DIN 2353;
on request, stainless steel