Series 38R Self-Acting Temperature Control Valve

Require No External Power

The Series 38R Self-Acting Temperature Control Valve requires no external power sources and is ideal for regulating the temperature of tanks, process streams and various types of industrial equipment. The actuators are made with a rugged die-cast aluminum housing with a fully enclosed bellow assembly and internal over-range protection. Valves are offered in 1/2" through 6" connection sizes and 1/8" through 6" port sizes. The valve bodies are available in single-seated direct or reverse-acting, double-seated direct or reverse-acting, and 3-way designs with four choices of body material: bronze, cast-iron, cast-steel, and 316 stainless steel. Actuators are available with or without indicating dials or in Fail-Safe. Non-indicating actuators feature a lower profile and should be implemented where space constraints may be an issue while the indicating actuator allows the operator to verify the process temperature and aid in temperature adjustment. Fail-Safe actuators are designed to cause the valve to fail in the safe control position (open in cooling application, closed in a heating application) should some accidental damage occur to the terminal system, resulting in loss of pressure charge. Also available with the Series 38R are a wide range of capillaries, bulbs, and thermowells.

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Product Applications

  • Temperature control without external power or control inputs
Grouped product items
Model Description Availability* Qty Price

Specifications

VALVE BODY
Service:
Compatible liquids, gases, and steam.
Line Size:
1/2" to 2".
Body Style:
2-way or 3-way.
End Connections:
1/2" to 2" female NPT.
Pressure Limit:
250 psi (17.2 bar).
Wetted Materials:
Body material: Bronze or 316SS; Trim: 316SS; Packing: PTFE.
Temperature Limits:
410°F (210°C) @ 250 psi (17.24 bar).

ACTUATOR
Power Requirements:
Fully self-contained, no external power required.
Indicator:
3-1/2" dial thermometer, SS case, swivel and angle adjustable (available for indicating actuator only).
Housing:
Die cast aluminum, epoxy powder coated blue finish.
Set Point Scale:
Integral to housing.
Bellows:
High-pressure brass, corrosion resistant, tinplated finish.
Adjustment Screws:
Brass.
Range Adjustment Spring:
Cadmium plated.
Over-range Protection:
100°F over upper range limit for temporary situations.

Features

  • Self-operated design
  • Internal over range protection
  • Heavy duty die cast aluminum actuator

Product Literature

Manuals

Catalog Pages

Model Chart

 
EXAMPLE 38R D A1 V A 3 2 1 01 08 1 R01 Series 38R-DA1VA32-101081-R01 Self-Acting Temperature Control Valve, 2-way, direct acting, 1/2" connection with 1/8" port, single seat, linear, bronze body, 316SS trim, non-indicating actuator, brass union hub, copper bulb & 8' capillary, 316SS well, range 20 to 70°F.
SERIES 38R                       Self-Acting Temperature Control Valve
ACTION   0
3
D
R
                    Replacement Actuator Only
3-way
2-way Direct Acting
2-way Reverse Acting
CONNECTION & PORT SIZE     A1
A2
A3
A4
B1
B2
B3
B4
B5
C1
C2
C3
C4
C5
C6
00
01
02
03
04
05
06
07
08
09
10
                  1/2" Connection with 1/8" Port
1/2" Connection with 3/16" Port
1/2" Connection with 1/4" Port
1/2" Connection with 3/8" Port
3/4" Connection with 1/8" Port
3/4" Connection with 3/16" Port
3/4" Connection with 1/4" Port
3/4" Connection with 3/8" Port
3/4" Connection with 1/2" Port
1" Connection with 1/8" Port
1" Connection with 3/16" Port
1" Connection with 1/4" Port
1" Connection with 3/8" Port
1" Connection with 1/2" Port
1" Connection with 3/4" Port
1/2" Full Port
3/4" Full Port
1" Full Port
1-1/4" Full Port
1-1/2" Full Port
2" Full Port
2-1/2" Full Port
3" Full Port
4" Full Port
5" Full Port
6" Full Port
VALVE SEAT       0
V
W
                Replacement Actuator Only
Single Seat
Double Seat
VALVE PLUG TYPE
(Internal)
        0
A
              Replacement Actuator Only
Linear
BODY MATERIAL           0
1
2
3
4
            Replacement Actuator Only
Cast Iron
Cast Steel
Bronze
316SS
TRIM MATERIAL
(Internal)
            0
1
2
          Replacement Actuator Only
Bronze
316SS
ACTUATOR               0
1
2
3
        Replacement Body Only
Non-Indicating
Indicating
Fail-safe
BULB & CAPILLARY                 00
01
02
03
04
05
06
07
08
09
10
      Replacement Body Only
Brass Union Hub, Copper Bulb & Capillary
SST Union Hub, SST Bulb & Capillary
Brass Adjustable Union Hub, Copper Bulb & Capillary
SST Adjustable Union Hub, SST Bulb & Capillary
Copper Bulb & Capillary Only
SST Bulb & Capillary Only
Bulb & Capillary Only Copper w/FEP Covering
Bulb & Capillary Only SST w/FEP Covering
Brass Union Hub, Copper Bulb & Capillary SST Armor
SST Union Hub, SST Bulb & SST Capillary SST Armor
CAPILLARY LENGTH                   00
08
12
16
20
24
28
32
36
40
44
48
52
    Replacement Body Only
8'
12'
16'
20'
24'
28'
32'
36'
40'
44'
48'
52'
WELL                     0
1
2
  None
316SS
Brass
RANGE                       000
R01
R02
R03
R04
R05
R06
R07
R09
R10
R11
R12
R13
R14
R81
R82
R83
R84
R85
R86
R89
R90
R91
R92
R93
R94
R95
R96
Replacement Body Only
20 to 70°F (-10 to 20°C)
40 to 90°F (5 to 30°C)
30 to 115°F (0 to 45°C)
50 to 140°F (10 to 60°C)
75 to 165°F (25 to 70°C)
105 to 195°F (40 to 90°C)
125 to 215°F (55 to 100°C)
155 to 250°F (70 to 120°C)
200 to 280°F (9 to 135°C)
225 to 315°F (110 to 155°C)
255 to 370°F (125 to 185°C)
295 to 420°F (145 to 215°C)
310 to 440°F (155 to 225°C)
40 to 65°F (5 to 20°C)
55 to 80°F (15 to 25°C)
65 to 90°F (20 to 30°C)
81 to 110°F (25 to 40°C)
90 to 115°F (30 to 45°C)
110 to 140°F (40 to 60°C)
140 to 175°F (60 to 80°C
170 to 195°F (80 to 90°C)
190 to 210°F (85 to 100°C)
205 to 225°F (95 to 105°C)
215 to 250°F (100 to 120°C)
230 to 265°F (110 to 130°C)
245 to 280°F (120 to 135°C)
270 to 300°F (135 to 150°C)
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Model Description Availability* Price