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Series 38R Self-Acting Temperature Control Valve
Require No External Power
Series 38R Self-Acting Temperature Control Valves require no external power sources and are 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.
Models & Ordering
Specifications
- TWO-WAY BRONZE VALVE BODY
Single Seat 1/2" to 2"
Wetted Materials: Body: bronze; Trim: 316 stainless steel; Packing: PTFE; Union: iron.
Trim Style: Modified linear.
Connection: Threaded, malleable iron union ends.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 410°F (210°C). TWO-WAY BRONZE VALVE BODY
Double Seat 3/4" to 2"
Wetted Materials: Body: bronze; Trim: 316 stainless steel; Packing: PTFE; Union: iron.
Trim Style: Modified linear.
Connection: Threaded, malleable iron union ends.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 410°F (210°C).TWO-WAY CAST IRON VALVE BODY
Double Seat 2-1/2" to 6"
Wetted Materials: Body: cast iron; Trim: 316 stainless steel; Packing: PTFE.
Trim Style: Modified linear.
Connection: Class 125 flanged.
Pressure and Temperature Limits: 125 psi (8.62 bar) @ 350°F (149°C).TWO-WAY CAST STEEL VALVE BODY
Single Seat 3/4" to 1"
Wetted Materials: Body: cast steel; Trim: 316 stainless steel; Packing: PTFE.
Trim Style: Modified linear.
Connection: Threaded.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 410°F (210°C).TWO-WAY STAINLESS STEEL VALVE BODY
Single Seat 1/2" to 2"
Wetted Materials: Body: 316 stainless steel; Trim: 316 stainless steel; Packing: PTFE.
Trim Style: Modified linear.
Connection: Threaded.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 410°F (210°C).TWO-WAY BRONZE FAIL SAFE VALVE BODY
Single Seat 1/2"
Wetted Materials: Body: bronze; Trim: 316 stainless steel; Packing: PTFE; Union: iron.
Trim Style: Modified linear.
Connection: Threaded, malleable iron union ends.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 410°F (210°C).TWO-WAY BRONZE FAIL SAFE VALVE BODY
Double Seat 3/4" to 2"
Wetted Materials: Body: bronze; Trim: 316 stainless steel; Packing: PTFE; Union: iron.
Trim Style: Modified linear.
Connection: Threaded, malleable iron union ends.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 410°F (210°C).THREE-WAY BRONZE VALVE BODY
1/2" to 2"
Wetted Materials: Body: bronze; Trim: bronze; Packing: PTFE; Union: iron.
Trim Style: Modified linear.
Connection: Threaded, malleable iron union ends.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 300°F (149°C).THREE-WAY CAST IRON VALVE BODY
2-1/2" to 4"
Wetted Materials: Body: cast iron; Trim: bronze; Packing: PTFE; Union: iron.
Trim Style: Modified linear.
Connection: Class 125 flanged.
Pressure and Temperature Limits: 125 psi (8.62 bar) @ 300°F (149°C).THREE-WAY STAINLESS STEEL VALVE BODY
1/2" to 2"
Wetted Materials: Body: 316 stainless steel; Trim: 316 stainless steel; Packing: PTFE; Union: iron.
Trim Style: Modified linear.
Connection: Threaded.
Pressure and Temperature Limits: 250 psi (17.24 bar) @ 300°F (149°C).ACTUATORS
Power Requirements: Fully self-contained, no external power required.
Indicator: 3-1/2˝ dial thermometer, stainless steel 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, tin-plated finish.
Adjustment Screws: Brass.
Range Adjustment Spring: Cadmium plated.
Overrange Protection: 100°F over upper range limit for temporary situations (not available for Fail-Safe actuators).
Weight: See dimensional drawing.
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 |
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| 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 |
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| VALVE SEAT |
0 V W |
Replacement Actuator Only Single Seat Double Seat |
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|
VALVE PLUG TYPE (Internal) |
0 A |
Replacement Actuator Only Linear |
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| BODY MATERIAL |
0 1 2 3 4 |
Replacement Actuator Only Cast Iron Cast Steel Bronze 316SS |
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|
TRIM MATERIAL (Internal) |
0 1 2 |
Replacement Actuator Only Bronze 316SS |
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| ACTUATOR |
0 1 2 3 |
Replacement Body Only Non-Indicating Indicating Fail-Safe |
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| 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 |
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| 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' |
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| WELL |
0 1 2 |
None 316SS Brass |
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| 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) |
Drawings
- 2-way Bronze Body - Single Seat (dwg)
- 2-way Bronze Body - Single Seat (pdf)
- 2-way Bronze Body - Double Seat (dwg)
- 2-way Bronze Body - Double Seat (pdf)
- 2-way Cast Iron Body - Double Seat (dwg)
- 2-way Cast Iron Body - Double Seat (pdf)
- 2-way Cast Steel Body - Single Seat (dwg)
- 2-way Cast Steel Body - Single Seat (pdf)
- 2-way SS Body - Single Seat (dwg)
- 2-way SS Body - Single Seat (pdf)
- 2-way Bronze Fail Safe Body - Double Seat (dwg)
- 2-way Bronze Fail Safe Body - Double Seat (pdf)
- 2-way Bronze Fail Safe Body - Single Seat (dwg)
- 2-way Bronze Fail Safe Body - Single Seat (pdf)
- 3-Way Bronze Body (dwg)
- 3-Way Bronze Body (pdf)
- 3-Way SS Body (dwg)
- 3-Way SS Body (pdf)
- 3-Way Cast Iron Body (dwg)
- 3-Way Cast Iron Body (pdf)
- Actuators (dwg)
- Actuators (pdf)
- Bulb & Capillary (dwg)
- Bulb & Capillary (pdf)
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