Alivio 1x2 Anderson Greenwood

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Pentair Valves & Controls
Pressure Relief Valve Sizing & Selection Report
3950 Greenbriar
5-feb-2015
Stafford TX, 77477
United States
(281) 274-4400
http://valvesizing.pentair.com
No Prpd. Chk. Appr. Date
Revision

Quote Number:
Client:
Location:
End-User Ref. No.:
Project:
Project Ref. No.:
1 Valve ID
41 SIZING DATA
2 Tag No.
QuickCalc001
42 Design Code
ASME Section VIIISizing Std. API 520
3 Service
43 Sizing Basis
Blocked Discharge
4 PID No.
44 Fluid State at InletGas / Vapor
5 Line No.
Quantity
45 Relieving Case Pressure Relief
6
1
46 Fluid Properties
7 GENERAL
47
Fluid Name
Natural Gas (SG=0.6)
8 Valve Type
Pilot-Op, Pop Acting, Non-Flowing Pilot48
Molecular Weight, M
17,400
9 Safety / Relief
Safety
Balanced
Yes
49
Compressibility, Z
1,000
10 Nozzle
Semi
Bonnet
Closed
50
Ratio of Sp. Heats, k (Cp / Cv)1,270
11 CONNECTIONS
51
Gas Constant, C
344,1
12 Inlet
1"
Thrd.
FNPT Standard 52
13 Outlet 2"
Thrd.
FNPT ASME B1.2053
14 MATERIALS OF CONSTRUCTION
54
15
Body
CS SA216-WCB/WC55
16
Cap
CS SA516-70
56
17
Trim
Stainless Steel
57
18 Main
Seat
Teflon®
58
19 Valve
Seals
Teflon®
59 Sizing Coefficients
Unit
20
Body
SS A479-316
60
K, Gas
Kd, Gas
0,627
0,697
21
Trim
Spring
SST
316 SST 61
Kb
Kc
1,0
1,0
22
Seat
Buna-N (Cryo. Liq.) 62
23 Pilot
Seals
Buna-N (Cryo. Liq.) 63
24 Valve
Diaphragm
N/A
64 Required Capacity
Unit
SCFH
25 Tubing
Fittings
65
Total
81000
26 Integral Sense
NACE MR0175 (2002) No
66
27
SS Vaporizer w/o Drain Val
67 Pressures
Unit
psig
28
68
MAWP
Operating
740
400
29
69
Set
CDTP
450
30 Acc
70
Over Pressure
45,0
10%
31 SIZING / SELECTION SUMMARY
71
Constant Superimposed 0
32 Valve Model No.
259ND12/S1
72
Variable Superimposed
0
33 Brand
Anderson Greenwood
73
Built-Up
0
Back
34 Area
Calculated Selected 0,192
0,205
74
Pressure
Total
0
35 (in²)
Data Set Orifice
ASME
D
75
Inlet Loss
0
0%
36
Unit
Required SCFH
81000
76
Atmospheric (Barometric)
14,696
psia
37
Rated
Actual
86673,625 96304,028 77
Relieving (Flowing)
509,696
psia
38 Flow
78 Temperatures
Unit
°F
39 Estimated Reaction Force
22,78
daN
79
Operating
Relieving
100
100
40 Estimated Noise Level (db)
108,5 at 100-ft
80
Design Min
Design Max
A
3,57
B
2,88
C
in 15,19
Weight
Tag
Vallb 22

Printed On: 5-feb-2015 Pentair PRV²SIZE Software Version pr5_20140811.1
Page : 1
Pentair Valves & Controls and its parent, subsidiaries, and affiliates assume no liability in any way whatsoever for any dire
agreement. Not for resale. All rights reserved. All trademarks, trade names and/or registered trademarks referred to in this progra

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