1. Introduction
Numbering System
The chart below illustrates the Farris Series 2700
valve type numbering system. The type number
is imprinted on the nameplate of every Farris
Series 2700 valve and describes its construction
and metallurgy. Valve types with numbers ending
in “SP” are special valves. Example: 27DA23-
120/SP. Contact the Farris Factory for assistance
when replacement parts or maintenance are
required on these valves.
Series
Number
27
Orifice
Area
C
0.068
D
0.125
E
0.223
F
0.350
G
0.573
Seat
Construction
A
Metal Seat
C
Soft Seat
T
Teflon
®
Seat
Inlet
Size
1
1/2”
2
3/4”
3
1”
4
1 1/2”
Outlet
Size
3
1”
4
1 1/2”
5
2”
6
2 1/2”
Inlet
Connections
O
Special
M
MNPT
F
FNPT
1
Flanged-150RF
2
Flanged-300RF
3
Flanged-600RF
4
Flanged-900RF
5
Flanged-1500RF
6
Flanged-2500RF
S
Socket Weld
T
Sanitary
V
VCR
W
Welding Nipple
Special
Variations
H
High
pressure
variations
of standard
types
Cap
Construction
2
Plain
4
Packed Lever
7
Open Lever
Test
Gag
0
No Gag
1
Test Gag
Special
Materials
S4
Complete 316 St. St.
S7
NACE Trim
M1
Monel
®
Body & Disc
M2
Monel Trim
M4
Complete Monel
H1
Hastelloy
®
C Body
& Disc
H2
Hastelloy C Trim
H4
Complete Hastelloy C
27 D A 2 3 H M 2 0 S4
Telfon is a registered trademark of the DuPont Company.
Monel is a registered trademark of Inco Alloys International Inc.
Hastelloy and Hastelloy C are registered trademarks of Haynes International Inc.
27DA23-M20
3/4 D 1
100 PSIG
100
12345-KE
250 STD. SCFM AIR
PSV-100
NB
Figure 1.1 Nameplate for 2700 Series
3
To Next Page
Loading...
Need help?
General
