Powers 596 Series Flowrite II Heavy Duty Control Valves - Type MI Mixing - Manual (Page 8)

Warranty
n
The Seller warrants that the equipment manufactured by it and covered by this order or contract is free from defects in material and workmanship and, without
charge, equipment found to be defective in material or workmanship will be repaired, or at Seller’s option replaced F.O.B. original point of shipment, if written
notice of failure is received by Seller within one (1) year after date of shipment (unless specifically noted elsewhere), provided said equipment has been properly
installed, operated in accordance with the Seller’s instructions, and provided such defects are not due to abuse or decomposition by chemical or galvanic action.
ThiS expreSS warranTy iS in lieu OF and excludeS all OTher warranTieS, guaranTeeS, Or repreSenTaTiOnS, expreSS OF implied. There are
nO implied warranTieS OF merchanTaBiliTy Or OF FiTneSS FOr a parTicular purpOSe. The Seller assumes no responsibility for repairs made on the
Seller’s equipment unless done by the Seller’s authorized personnel, or by written authority from the Seller. The Seller makes no guarantee with respect to material
not manufactured by it.
Ordering Information
n
Accessories Select Code
n
USA: Phone: 1.800.669.5430 • Fax 1.847. 229.0526 • www.powerscontrols.com
Canada: Phone: 1.888.208.8927 • Fax 1.888.479.2887 • www.powerscontrols.ca
IS-P-596MI 1043 EDP# 6512249 © 2010 Powers
A Watts Water Technologies Company
I/P Transducers
n
The "standard" 3-15 psi signal was originally designed as a trans-
mission signal, not a valve actuation signal. The Fluid Controls
Institute (in Standard 87-2) has recommended that a 1–17 psi
air signal range be used when directly actuating a control valve
without a positioner. Powers concurs with this recommenda-
tion, and therefore, offers a 1–17 psi I/P transducer and a 0–30
psi I/P transducer and the Accritem pneumatic controller for
maximum close-off. 3-15 psi I/P transducers should be used in
conjunction with positioners.
Positioners
n
Positioners are used for one or more of the following reasons:
1) To split range valves.
2) To eliminate unwanted valve movement caused by line pres-
sure variations
3) To minimize the effects of "stick-slip"
4) To speed response time and/or
5) To increase close-off rating when I/Ps are used.
Code Pneumatic Diaphragm Actuators
46 46 Sq. in, 1" Max Valve Stroke with Stainless Steel Springs,
adjustable start w/ 7 ~ 12 lb. Fixed span
4X 46 Sq. in, 1" Max Valve Stroke with Extended Springs
(requires positioner), adjustable start w/22 lb. span.
1M 100 Sq. in, 5-10 psi Spring Range (Mixing Valves)
Code Description
Bellofram 1000 I/P’S
IS 3–15 psi
TS 1–17 psi
US 3–27 psi
Control/Air Type 900X I/P
ES 0–30 psi
Utility Positioner and I/P
BS 4–20 mA
Utility Positioner
PS 3–15 psi
RS 3–9 psi
SS 9–15 psi
No Accessories
OS No Accessories
Actuator Select Code
n
Size Order Code
2 1/2" 250
3" 300
4" 400
5" 500
6" 600
End Connections
125# Flange
F
Valve Trim
Bronze
B
Action
Mixing
M
Packing
Teflon
T
M I 596-
Actuator
Select Code
(see below)
Accessories
Select Code
(see below)