FIO EZ
Un-Pressurized
Orifice Fittings
FIO EZ
Classification and Application Fields
The FIO EZ un-pressurized Orifice Fitting is a device that houses, and accurately positions, an orifice plate for
measuring flow within a pipe or tube. When placed in the FIO EZ un-pressurized Orifice Fitting, an orifice plate will
produce a differential pressure by abruptly constricting the medium flowing through it. The differential pressure is
measured across the plate through two taps located on the FIO EZ un-pressurized Orifice Fitting in the vicinity of
the constriction.
The FIO EZ un-pressurized Orifice Fitting single chamber design allows for the inspection and the replacement of
orifice plates without removing the FIO EZ from the flow line. Use of the FIO EZ un-pressurized Orifice Fitting eliminates
the effort required to remove and inspect an orifice plate housed in conventional orifice flange installations.
Pietro Fiorentini designs and manufactures all FIO EZ units to A.G.A. 2000 recommendations. The FIO EZ un-pressurized Orifice Fitting is designed and manufactured in strict accordance with all applicable
ANSI, ASME, ASTM and ISO 5167 specifications.
Products bearing the “CE” mark are designed and manufactured in compliance with the European
Union Pressure Equipment Directive (PED) 97/23/EC.
Fig.1
2
FIO EZ
Features and Benefits
FIG. 945
179 Electroless Nickel Plated
Provides Life-time Protection against corrosion
190 Three Points of Contact
Metal-to-metal contact ensures meeting internal
concentricity tolerances of ANSI 14.3
181 O-Ring Seal
- Easily assembled at job-site
- Reuseable many times during operating life
- Body and bonnet metal-to-metal contact does not change
the eccentricity of the orifice plate as may be possible with designs
utilizing gaskets
178 AISI 316 Screw Provides
Life-time Protection
against corrosion and future maintenance is
easier
180 Electroless Nickel Plated
Provides Life-time Protection against corrosion
All Pietro Fiorentini “FIO EZ” un-pressurized orifice fittings are
designed and manufactured to current ISO 5167/API/AGA
14.3 standards.
Alternate fittings are available in socket weld, threaded and
weld ends upon request.
3
Providing Solutions for Oil and Gas
TECHNICAL DATA
FIG. 945
ROUGHNESS OF INTERNAL BODY SURFACES
API/AGA 14.3 Report N°3
Body bore diameter
D
gap
X
B
Seal diameter
SECTION: 2.5.1.1
300 microinches per Beta ≤ 0.6
200 microinches per Beta > 0.6
ORIFICE PLATE
API/AGA 14.3 Report N°3 - SECTION: 2.5.1.4
SEALING PLATE
RING
The orifice plate surfaces ‘B’ must not protrude into
the bore ‘D’.
BODY FITTING
API/AGA 14.3 Report N°3 - SECTION: 2.5.1.4.2
In all Pietro Fiorentini pressurized orifice fittings, the
distance ‘X’ is less than 0.25 inches.
Temperature limits: -20° F +250° F
➀➁
TEST PRESSURE IN ACCORDANCE TO
HYDROSTATIC TEST
API 6D
PNEUMATIC TEST
CLASS
➀ BODY AND BONNET
➁ BODY
➂ PLATE
150
425
80
2.9
300
1100
80
2.9
600
2175
80
2.9
psi
psi
psi
➀➁
The test pressures listed are NOT valve operating pressure ratings.
4
BODY
➂
BLIND ORIFICE PLATE
TECHNICAL DATA
FIG. 945
THREE POINTS OF CONTACT
This system enables the fitting to meet
internal concentricity tolerances of the
orifice plate as required by ISO 5167/API/
AGA 14.3 standards.
max (ε) ECCENTRICITY FOR 0,75 BETA (β)
SIZE
Dm
API/AGA 14.3 Report N°3
Section: 2.6.2.1
ECCENTRICITY (ε)
API/AGA 14.3
εmax =
Report N°3
Section: 2.6.2.1
where:
εmax
2
2.066
0.005905
3
3.068
0.009055
4
4.025
0.011811
6
6.066
0.018110
0.0025 Dm
0.1+2.3 (βmax)4
Allowable plate bore
eccentricity measured parallel
to the axis of the pressure taps;
Dm is the mean bore diameter;
β
is the maximum beta
max
ratio of the diameters used.
inches
5
Providing Solutions for Oil and Gas
CONSTRUCTION MATERIALS
FIG. 945
X
178
180
179
181
277
279 222
278 220
14
190
1
13
X
Sec. XX
POS.
1
13
14
178
179
180
181
190
220
222
277
278
279
DESCRIPTION
BODY
DRAIN PLUG
PLUG
SCREW
BONNET
CLAMP
O RING
PLATE CARRIER
SCREW
WASHER
WASHER
ORIFICE PLATE
SEALING PLATE
MATERIALS
ASTM A 216 WCB
ASTM A 105
ASTM A 105
AISI 316
AISI 1035
AISI 1035
BUNA-N
AISI 316
CARBON STEEL
CARBON STEEL
AISI 316
AISI 316
BUNA-N
NOTES
2
2
1
1
2
2
Tab.2
Three-dimensional control
NOTES
1 ENP (Electroless Nickel plated).
2 Zinc coated.
6
OVERALL DIMENSIONS
FIG. 945
ORIFICE PLATE
S
S
Butt-Welding End According
to ANSI ASME B16.25
1/16” Ø D
H
B
1/2°
37
1”
1”
RF+BW
=
Flange Facing According
to ANSI ASME B16.5
R
=
FIG. 945-1
ND
2
3
4
6
CLASS 150
RF-BW
71/4
71/2
9
101/4
D*
2.067
3.068
4.026
6.065
B
3
4
47/8
6
H
45/8
51/8
55/8
73/8
S
45/8
51/4
53/4
63/4
R
1/8
1/8
1/8
1/8
pounds
Inches
FIG. 945-3
ND
2
3
4
6
CLASS 300
RF-BW
71/4
71/2
9
101/4
D*
2.067
3.068
4.026
6.065
B
3
4
47/8
6
H
45/8
51/8
55/8
73/8
S
45/8
51/4
53/4
63/4
R
1/8
1/8
1/8
1/8
WEIGHT
42
54
80
130
pounds
Inches
FIG. 945-6
ND
2
3
4
6
WEIGHT
41
49
68
114
CLASS 600
RF-BW
8
9
10
111/2
D*
2.067
3.068
4.026
6.065
B
3
4
47/8
6
H
45/8
51/8
55/8
73/8
S
45/8
51/4
53/4
63/4
WEIGHT
47
72
98
160
pounds
Inches
* Bore tolerance “D” ± 0.002”
R
1/8
1/8
1/8
1/8
Other bores are available on special request
ORIFICE PLATE DIAMETER
Dp
2.437
3.437
4.406
6.437
R
1/8
1/8
1/8
1/8
Ø Dp
ND
2
3
4
6
R (Thickness)
Inches
7
Providing Solutions for Oil and Gas
www.fiorentini.com
The data are not binding. We
reserve the right to make changes
without prior notice.
CT-s 635-US May 16