Watts 252A - Manual

For Steam, Liquid or Air Applications
ES-252A
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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 with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Series 252A
Stainless Steel
Strainer Screen
Replaceable
Stainless Steel
Seat and Valve
Disc.**
Stainless Steel
Disc and Stem
Guide (This
stainless steel
trim is standard-
ly 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 252A
Process Steam Pressure
Regulators
Sizes 1 ⁄
2
" – 3 ⁄
4
" (15 - 20mm)
Series 252A 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 252A features a sensitivity adjuster to eliminate any
vibrating condition that may arise from critical flow requirements.
Features
• Bronze body construction
• Serviceable in line
• Standard sensitivity adjuster
Models
252A – Bronze body for pressures up to 300psi (21 bars)
252AT – 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 bronze and have a maximum
working pressure of up to 300psi. 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 252A.
Materials
Body: Bronze
Trim: Stainless Steel
Strainer: Stainless Steel
Diaphragm: Laminated Metal
Seat: Replaceable Stainless Steel
Disc: Replaceable Stainless Steel
Pressure – Temperature
252A Maximum Working Pressure: 300psi (21 bars)
252AT – 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 252AT, 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.