Style ‘A’ Valve Assembly FEATURES

Style ‘A’ Valve Assembly FEATURES
Sales Manual Section 160
PRODUCT SPECIFICATION STYLE ‘A’
(For Temperature Regulator Service)
Style ‘A’ Valve Assembly
FEATURES
• Single Seated
• Direct Acting 1/4" - 1"
• Reverse Acting 1/4" – 1 1/2"
• Teflon* Chevron or Rubber U-Cup maintenance free Packing
• Quick disconnect stem construction
These valves are especially suited for Temperature
Regulators where single-seated construction is desired.
Valve stems of highly finished type 316 stainless
steel feature quick-disconnect valve stem construction
which permits removal of valve from regulator without
disturbing valve stem stroke adjustment in the
upperworks.
Direct Acting
SPECIFICATIONS
Type: Single seated.
Sizes: .......1/2" through 1-1/2" (See Cv Ratings Table. Some
reduced ports available.
Action:
Direct Acting .........Closes downward for heating service.
Reverse Acting ...... Opens downward for cooling service.
Materials:
Valve Trim ............... (Seat and both plugs) stainess steel.
Valve Stem ................. Type 316 St. St. quick detach type.
Stem Packing
Direct Acting: Spring loaded chevrons (Teflon*).
Reverse Acting: Rubber U-cup.
Body .........................................................................Brass
Unions .................................................................. Bronze
Other Parts ........................................................... Bronze
Maximum Valve Design Ratings
(Supply Pressure and Allowable Pressure Drop)
Valve Design Ratings
Maximum Supply Pressure: .............. 225 psi at 100°F.
Maximum Temperature: .................. 400° F at 150 psi
Maximum Pressure Drop: ..... 1/2" or smaller, 125 psi;
3/4",100 psi; 1", 75 psi; 1 1/4" and 1 1/2" , 50 psi.
Acting
Reverse Acting
* Teflon is a DuPont company registered
tradename
1
Type "A" Valve used with self-actuated temperature regulator The maximum supply pressure should not exceed the valve rating on front page.
Maximum allowable pressure drop is limited by the unbalanced area of the valve
port and the power developed by the regulator thermal assembly. Pressure drop
figures shown in the following chart apply when the "A" valve is used with the
self-actuated temperature regulator series.
Maximum Recommended Pressure Drops, PSI*
SATR SERIES
Valve Port,
RT-1001 RT-1003 RT-1004 RT-1006 RT-1007 RT-1008 RT-1009 RT-1011
In.
1/4
125
125
125
125
125
125
125
125
3/8
115
125
125
125
125
125
125
125
1/2
65
125
125
90
110
125
125
125
3/4
30
75
100
40
50
75
75
75
1
15
40
75
20
30
40
40
40
1 1/4
10
25
45
20
25
25
25
1 1/2
7
20
30
10
20
20
20
*Supply pressure to valve less any back pressure to the valve.
Direct Acting
Reverse Acting
INSTALLATION DIMENSIONS
Valve Body Size, In.
1/2
3/4
1
1-1/4
1-1/2
D*
1-9/16
2-1/16
2-1/16
2-5/8
3-1/16
E
4-3/4
6-3/ 16
6-1/4
7-13/16
8-11/16
L( Direct-acting)
L(Rev.-acting)
15/16
1-1/4
1-1/4
2
2-3/16
1-11/16
1-13/16
1-13/16
2-9/16
3-1/16
Subject to change without notice.
Cv Ratings; Porting Available
Valve Size, in.
1/2
3/4
1
1-1/4
Port Size
1/4 3/8 1/2 1/2 3/4 3/4
1
1-1/4
Direct-acting
1.0 1.6 2.1 3.6 5.7 6.1 6.9
Reverse-acting
0.8 2.9 3.2
5.9
8.2 19.4
NOTE: Maximum factory test allowable leakage:
1/2" to 1" size - 0.05% of rated valve capacity at 50 psi.
1 1/4" & 1 1/2" sizes - 0.05% of rated valve capacity at 20 psi.
1-1/2
1-1/2
27.6
2
Q-4046 (4/95)
Printed In U.S.A.
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