Submittal Sheet

Typical Specication
Furnish and install on the plans and described herein, a Caleffi PresCal 535H
series pressure reducing valve as manufactured by Caleffi. Each valve must
be designed with a pressure balanced seat and self-contained removable
cartridge. The valve design must include a DZR low-lead forged brass body,
glass reinforced nylon housing with UV outdoor protective snap-on cover,
stainless steel filter, peroxide-cured EPDM membrane diaphragm and sealing
gaskets, with PTFE compensating piston rings. Equipped with operating knob
with downstream pressure adjustment scale for manual setting and tamper-
proof adjustment locking screw. The valve must be ICC-ES certified to
ASSE 1003, CSA B356, and conforms to NSF/ANSI/CAN 61 (180°F/82°C
Commercial Hot), NSF/ANSI 372, low lead laws as certified by ICC-ES;
and meet codes IPC, IRC and UPC for use in accordance with the US and
Canadian plumbing codes. Plenum rated: compliant with the requirements
of standard UL 2043. Each valve shall be Caleffi model 535H series or
approved equal. (See product instructions for specific installation information.)
CALEFFI
Application
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 feature a dial indicator with direct readout
allowing easy pressure pre-adjustment. The valve is constructed of DZR
low-lead forged brass and incorporates a unique noise reducing and high
flow seat design, easy inline servicing with a replaceable cartridge and an
integral stainless steel filter (35 mesh). Suitable for water systems that may
contain sediment and debris.
Submittal Data 03020 NA — Issue Date 05/2021
Dimensions
PresCal™
Pre-adjustable pressure reducing valves
Technical specications
Materials - body: DZR low-lead forged brass
CR EN 1982 CC768S
- housing: glass reinforced nylon PA66M40/1
- outdoor protective cover: UV stablized ABS, gray
- control stem and moving parts:
DZR low-lead brass CR EN 12164 CW724R
- diaphragm: peroxide-cured EPDM
- seals: peroxide-cured EPDM
- compensation piston rings: PTFE
- filter: stainless steel EN 10088-2 (AISI 304)
- seat: stainless steel EN 10088-3 (AISI 303)
- shuttle cartridge: PPSG40
Performance
Suitable fluids: water
Max. working pressure: 300 psi (20 bar)
Downstream pressure setting range: 15 - 90 psi (1 - 6 bar)
Factory setting: 45 psi (3 bar)
Maximum working temperature: 180°F (80°C)
Flow rates at 6 fps (gpm): ½": 7.3; ¾": 12.5; 1": 19.0; 1¼": 34.0;
1½": 44.0; 2": 70.0
Pressure gauge scale: 0 - 100 psi (0 - 7 bar)
Filter mesh size: 0.51 mm (35 mesh)
Connections
Main connections:
½", ¾", 1", 1¼", 1½" & 2" NPT female and sweat union
¾", 1", 1¼", 1½" & 2" press union
¾" & 1" PEX crimp union
¾" & 1" PEX expansion union
Lay length for press connections: see page 2
Pressure gauge connection: 1/8" NPT female
See page 2 for dimensions.
B
535H Ser ies
CALEFFI
A
E
DC
B’
A
30
45
60
AA
AA
NPT female
sweat
press*
PEX crimp
A A
PEX expansion
A A
UV outdoor
protective cover
Page 1 of 2
Certications
1. Complies with codes IPC, IRC, UPC and NPC.
ICC-ES certified to ASSE 1003, CSA B356
(R2015).
2. Complies with NSF/ANSI/CAN 61 (180°F/82°C
Commercial Hot), as certifed by ICC-ES, file PMG-1356.
3. Complies with NSF/ANSI 372, Drinking Water System
Components-Lead Content Reduction of Lead
in Drinking Water Act, California Health and Safety
Code 116875 S.3874, Reduction in Drinking Water
Act, Vermont Act 193 - The Lead in Plumbing
Supplies Law and Maryland’s Lead Free Law HB.372,
as certified by ICC-ES, file PMG-1360.
4. PEX crimp fittings certified to ASTM F 1807.
5. PEX expansion fittings certified to ASTM F 1960.
6. Plenum rated: Evaluated in accordance with the
standard UL 2043 and was found compliant with the
standard's requirements. (This does not pertain to the
outdoor protective cover)
NSF/ANSI/CAN 61