Watts 152A User Manual
For Steam, Liquid or Air Applications
ES-152A
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Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Series 152A
Stainless Steel
Strainer Screen
Replaceable
Stainless Steel
Seat and Valve
Disc.**
Stainless Steel
Disc and Stem
Guide (This
stainless steel
trim is standardly furnished at
no extra cost)
Laminated Metal
Diaphragm
Adjusting Springs
for reduced pressure
ranges between 3
and 140 psi (.21 and
9.8 bars)
Series 152A
Process Steam Pressure
Regulators
Sizes 1⁄
2" – 2" (15 - 50mm)
Series 152A Process Steam Pressure Regulators are designed to
offer highly sensitive response to reduced pressure changes and
maintain fullest possible volume without appreciable reduced
pressure drop. These regulators are ideal for use on applications
such as oil lines, testing fixtures, autoclaves, steam tables, steam
irons, single radiators, vulcanizers, sterilizers and process lines. The
series 152A features a sensitivity adjuster to eliminate any vibrating
condition that may arise from critical flow requirements.
Features
• Iron body construction
• Serviceable in line
• Standard sensitivity adjuster
Models
152A – Iron body for pressures up to 200psi (14 bars)
152AT – Tight seating for dead end and liquid service. Utilizes
Teflon
®
valve disc, maximum operating temperatures are 300°F
(204°C) at 300psi (21 bars) and 400°F (204°C) at 200psi (14 bars)
For information on
1
⁄2
" – 1" stainless steel construction, see literature
ES-152SS.
Specifications
Valve shall be manufactured out of iron and have a maximum working pressure of up to 200psi. Valve shall feature a sensitivity adjuster
to eliminate vibrating conditions. Valves shall be serviceable in line
and have stainless steel trim and strainer. Valve shall be a Watts
Regulator Company Series 152A.
Materials
Body: Iron
Trim: Stainless Steel
Strainer: Stainless Steel
Diaphragm: Laminated Metal
Seat: Replaceable Stainless Steel
Disc: Replaceable Stainless Steel
Pressure – Temperature
152A Maximum Working Pressure: 200psi (14 bars)
152AT – Maximum Temperature: 300°F (149°C)
Maximum Working Pressure: 300psi (21 bars), and
Maximum Temperature: 400°F (204°C)
Maximum Working Pressure: 200psi (14 bars)
** When utilizing a Teflon®valve disc in the 152AT, the maximum
operating temperatures are 300°F at 300psi (149°C at 21 bars)
and 400°F at 200psi (204°C at 14 bars).
A Plus Feature
Sensitivity Adjuster
Basic Design Feature
Teflon®is a registered tradename of E.I. duPont deNemours Co., Inc.
ES-152A 0403 © Watts Regulator Co., 1996 Printed in U.S.A.
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.wattsreg.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
A
D
C
Flow
Flow
Flow
Pressure Drop
Pressure Drop
Pressure Drop
Series 152A
Adjusting Spring Range Chart
SIZE *ADJUSTABLE RANGES SPRING AND MODEL NO.
in. mm psi bars
1
⁄
2
15 3 – 15 .21 – 1.05 145
1
⁄
2
15 10 – 50 .70 – 3.51 146
1
⁄
2
15 30 – 140 2.11 – 9.84 141
3
⁄
4
20 3 – 15 .21 – 1.05 145
3
⁄
4
20 10 – 50 .70 – 3.51 146
3
⁄
4
20 30 – 140 2.11 – 9.84 141
1253 – 15 .21 – 1.05 146
12510 – 30 .70 – 2.11 128
12530 – 140 2.11 – 9.84 142
11⁄
4
32 3 – 15 .21 – 1.05 146
1
1
⁄
4
32 10 – 30 .70 – 2.11 128
1
1
⁄
4
32 30 – 140 2.11 – 9.84 142
11⁄
2
40 5 – 40 .35 – 2.81 276
1
1
⁄
2
40 30 – 100 2.11 – 7.03 299
2505 – 40 .35 – 2.81 276
25030 – 100 2.11 – 7.03 299
*The minimum reduced pressure ranges shown are recommended
only when very sensitive regulation service is needed for specific
requirements. However, all valves may be adjusted below the working
range minimums shown for lower regulation or complete shut off.
SIZE (DN) DIMENSIONS WEIGHT
AC D
in. mm in. mm in. mm in. mm lbs. kg.
1
⁄215 6 152 7 178 115⁄1649 11 4.99
3
⁄420 6 152 7 178 115⁄1649 11 4.99
12571⁄
2
191 7
1
⁄
2
191 2
3
⁄
16
56 20 9.07
11⁄432 71⁄2191 71⁄2191 23⁄
16
56 20 9.07
11⁄240 9 229 111⁄4286 23⁄470 40 18.14
2509229 111⁄
4
286 2
3
⁄
4
70 40 18.14
bars psi
1.4 20
1.0 15
0.7 10
0.3 5
00
24681012 gpm
7.6 15.2 22.8 30.4 38 45.6 lpm
bars psi
1.4 20
1.0 15
0.7 10
0.3 5
00
bars psi
1.7 25
1.4 20
1.0 15
0.7 10
0.3 5
00
510152025303540gpm
19 38 57 76 95 114 133 152 lpm
5101520253035gpm
19 38 57 76 95 114 133 lpm
Quick Reference Capacity Chart For Average Conditions
From From From From From From From From From
psi bar psi bar psi bar psi bar psi bar psi bar psi bar psi bar psi bar
Initial Pressure 50 3.52 75 5.27 100 7.03 125 8.79 150 10.55 175 12.3 200 14.06 225 15.82 250 17.58
Up To Up To Up To Up To Up To Up To Up To Up To Up To
Reduced Pressure 20 1.41 35 2.46 50 3.52 60 4.22 70 4.92 80 5.62 90 6.33 100 7.03 125 8.79
in. mm *Maximum Capacities in Lbs. of Steam Per Hour
152A
1
⁄2"1580111 143 175 205 237 270 299 332
152A
3
⁄
4
"20285 394 506 620 726 841 956 1060 1178
152A 1" 25 402 557 715 875 1025 1186 1349 1497 1663
152A 11⁄
4
"32442 613 786 962 1127 1305 1484 1646 1830
152A 11⁄
2
"40665 870 1120 1355 1600 1950 2230 2460 2725
152A 2" 50 765 1000 1285 1490 1840 2242 2564 2829 3134
*1 Lb. Steam Equals 970 BTU Per Hour
Capacity
152A Size 1⁄2" (15mm)
152A Size 3⁄4" (20mm)
152A Size 1" (25mm)
Range 30 - 140
Range 10 - 50
Range 3 - 15
Range 30 - 140
Range 10 - 50
Range 3 - 15
Range 30 - 140
Range 10 - 50
Range 3 - 15
Dimensions — Weights