CALEFFI PresCal 5353H Series Installation, Commissioning And Servicing Instructions
Pre-adjustable pressure reducing valves
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PresCal™ Pre-adjustable pressure reducing valves
© Copyright 2023 Caleffi
Installation, commissioning and servicing instructions
All models come with UV outdoor
protective cover as pictured here.
ASSE 1003
NSF/ANSI/CAN 61
NSF/ANSI/CAN 372
Product range
5353H Series
Pre-adjustable pressure reducing valve with or without pressure gauge and NPT female
threaded union connections, sizes ½", ¾", 1", 1¼", 1½" and 2".
5355H Series
Pre-adjustable pressure reducing valve with or without pressure gauge and PEX expansion
union connections, size ¾" and 1".
5356H Series
Pre-adjustable pressure reducing valve with or without pressure gauge and union press
connections, sizes ½", ¾", 1", 1¼", 1½" and 2".
5357H Series
Pre-adjustable pressure reducing valve with or without pressure gauge and union PEX
crimp connections, sizes ¾" and 1".
5359H Series
Pre-adjustable pressure reducing valve with or without pressure
gauge and union sweat connections,
NA5398H Series
Pre-adjustable pressure reducing valve with or without pressure
gauge, body only, connections field installed,
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Function
Pressure reducing valves are devices which, when
installed on water systems, reduce and stabilize the
pressure of the water entering from the water supply
main. This pressure, in general, is too high and
variable for domestic systems to operate correctly.
The PresCal™ 535H series pressure reducing valves,
ideal for residential and commercial applications, feature
a dial indicator with direct readout allowing easy pressure
pre-adjustment. After installation, the valve will control at
the pre-adjusted pressure setting.
The valve is constructed of DZR low-lead forged brass
and incorporates a unique noise reducing and high
flow seat design, is easily serviced with a replaceable
cartridge and has an integral stainless steel filter
(35 mesh), suitable for water systems that may
contain sediment and debris.
The valve complies with standards ASSE 1003, CSA
B356, NSF/ANSI/CAN 61 (180 °F/82 °C Commercial
Hot), NSF/ANSI/CAN 372 and codes IPC, IRC, UPC
and NPC certified by ICC-ES. The valve is also plenum
rated: compliant with the requirements of standard UL
2043, without the outdoor protective cover.
sizes ½", ¾", 1", 1¼", 1½" and 2".
sizes ½", ¾", 1", 1¼", 1½" and 2".
1
NA10397.07
535H Series
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Summary of Contents for CALEFFI PresCal 5353H Series
- Page 1 NA10397.07 www.caleffi.com PresCal™ Pre-adjustable pressure reducing valves 535H Series © Copyright 2023 Caleffi Installation, commissioning and servicing instructions Function Pressure reducing valves are devices which, when installed on water systems, reduce and stabilize the pressure of the water entering from the water supply main.
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Page 2: Safety Instruction
WARNING: Caleffi shall not be liable for damages resulting from stress corrosion, misapplication or misuse of it’s products. Leave this manual for the user... -
Page 3: Consigne De Sécurité
- doivent être compatibles avec les matériaux utilisés pour la fabrication de l’appareil et avec la fonction qu’il remplit. AVERTISSEMENT: Caleffi ne sera pas responsable des dommages résultant de la corrosion sous tension, d'une mauvaise application ou d'une mauvaise utilisation de ses produits. -
Page 4: Technical Specifications
Technical specifications Materials: - Body: DZR low-lead* brass CR EN 1982 CC768S - Housing: glass reinforced nylon PA66M40/1 - Outdoor protective cover: UV stabilized ABS, gray - Control stem: DZR low-lead brass CR EN 12164 CW724R - Moving parts: DZR low-lead brass CR EN 12164 CW724R - Diaphragm &... -
Page 5: Hydraulic Characteristics
Hydraulic characteristics Graph 1 (Maximum velocity for sizing) V (f/s) V (m/s) 0.45 1 / 2” 2” 1/ 2” 3/ 4” 1” 1 1/ 4” 0.15 5351 5350 ∆p (bar) ∆p (m w.g.) - Page 6 Graph 2 (Pressure drop) 1 1/2“ 1/2“ 3/4“ 1“ 1 1/4“ 2“ p (psi) p (kPa) ∆ ∆ Reference values: Upstream pressure = 116 psi (800 kPa) Downstream presssure = 43 psi (300 kPa) Sizing procedure Maximum flow velocity is recommended to be kept within 3 to 6 f/s when calculating the correct pressure reducing valve size.
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Page 7: Installation Recommendations
Installation Each 535H PRV comes with a snap-on protective cover which is designed to resist UV rays, for outdoor locations, and to provide a significant level of protection against dust, dirt and water. It does not protect against freezing; do not mount the valve in locations where it may freeze. Protective cover not approved for use in plenum installations. - Page 8 When installing the pressure reducing valve upstream of a hot water tank, installing an expansion tank, or similar, is recommended to absorb the increase in pressure due to the thermal expansion of water. When installing in large buildings, short pipes or expansion valves, and/or similar equipment, is recommended to limit the increased pressure due to the thermal expansion of water caused by temperature changes downstream of the pressure reducing valve itself (or downstream of the first and second stage pressure reducing valves, if two are used).
- Page 9 PVC jumper nipple with male union thread. The length of the jumper nipple matches the 535H valve face-to-face dimension, allowing the piping to be completed prior to the installation of valve and permitting quick change out from the jumper to the valve. Face-to-Face Code Description...
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Page 10: Maintenance
Maintenance The pressure reducing valve must be checked and serviced to comply with applicable regulations. Even when installed, commissioned and serviced properly, the pressure reducing valve's internal components are subject to normal wear and tear, which may result in leaks and other malfunctions. -
Page 11: Troubleshooting
Troubleshooting System failures are not always caused by the pressure reducing valve. Most frequently: 1. Increased downstream pressure in the presence of a water heater If the downstream pressure increases beyond the desired setting due to an inline water heater, install an expansion t a n k b e t w e e n t h e p r e s s u r e r e d u c i n g valve and the water heater to absorb t h e... -
Page 12: Replacement Parts
Gauge port plug. 1 /8" NPT male NA10438........NA10811 ..fits 535H ½”, ¾”, 1” NA10812..fits 535H 1¼”, 1½”, 2” Caleffi North America, Inc. 3883 West Milwaukee Road Milwaukee, WI 53208 12-2023 T: 414.238.2360 F: 414.238.2366 For Technical Support call 1-414-338-6338, or...