Caleffi 535381HA, 535340HA User Guide

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535HA series pressure reducing valve

NA10397

Installation, commissioning and servicing instructions

ASSE 1003

NSF 61

535HA Series

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 535HA series pressure reducing valves, ideal for residential and commercial applications, feature a dial indicator with direct readout allowing easy pressure preadjustment. After installation, the system pressure will automatically adjust itself to the set value.

The valve is constructed of DZR low-lead 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.

The valve is ICC-ES certified to ASSE 1003, CSA B356, NSF 61, NSF 372, low lead laws and listed by ICC-ES. It meets codes IPC, IRC and UPC for use in accordance with the US and Canadian plumbing codes.

Product range

5353HA Series threaded union connections, sizes 1/2", 5356HA Series connections, sizes 5359HA Series connections, sizes 1/2",

Pre-adjustable pressure reducing valve with or without pressure gauge and NPT female

Pre-adjustable pressure reducing valve with or without pressure gauge and union press

3/4”.

Pre-adjustable pressure reducing valve with or without pressure gauge and union sweat

3/4”, 1", & 1 1/4".

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SAFETY INSTRUCTION

This safety alert symbol will be used in this manual to draw attention to safety related instructions. When used, the safety alert symbol means.

ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN A SAFETY HAZARD.

CAUTION: All work must be performed by qualified personnel trained in the

proper application, installation, and maintenance of systems in accordance with all applicable codes and ordinances.

CAUTION: If the 535HA series pressure reducing valve is not installed, commissioned and maintained properly, according to the instructions contained in this manual, it may not operate correctly and may endanger the user.

CAUTION: Make sure that all the connecting pipework is water tight.

CAUTION: When making the water connections, make sure that the

connecting pipework is not mechanically over-stressed. Over time this could cause breakages, with consequent water losses which, in turn, could cause harm to property and/or people.

CAUTION: Water temperatures higher than 100°F (38°C) can be dangerous. During the installation, commissioning and maintenance of the 535HA PRV, take the necessary precautions to ensure that such temperatures do not endanger people.

Leave this manual for the user

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CONSIGNE DE SÉCURITÉ

Ce symbole d'avertissement servira dans ce manuel à attirer l'attention sur la sécurité concernant

instructions. Lorsqu'il est utilisé, ce symbole signifie.

ATTENTION! DEVENEZ ALERTE ! VOTRE SÉCURITÉ EST EN JEU ! NE PAS SUIVRE CES INSTRUCTIONS PEUT PROVOQUER UN RISQUE DE SECURITE.

ATTENTION: Tous les travaux doivent être effectués par du personnel

qualifié formé à la bonne application, installation et maintenance des systèmes conformément aux codes et règlements locaux.

ATTENTION:

service et entretenu correctement, selon les instructions contenues dans ce manuel, il peut ne pas fonctionner correctement et peut mettre en danger l'utilisateur.

ATTENTION: S'assurer que tous les raccordements sont étanches.

ATTENTION: Lorsque vous effectuez les raccordements d'eau, assurez-

vous que la tuyauterie reliant réducteur de pression n'est pas mécaniquement des overstressed. Au fil du temps, ceci pourrait causer des ruptures, avec pour consequence des pertes en eau qui, à leur tour, peuvent causer des dommages à la propriété et/ou les gens.

ATTENTION: les températures de l'eau supérieure à 100°F (38°C) peut être dangereux. Au cours de l'installation, mise en service et l'entretien de le réducteur de pression, Série 535HA, prendre les precautions nécessaires afin de s'assurer que de tells températures ne compromettent pas les gens.

Si le réducteur de pression, Série 535HA, n'est pas installé, mis en

LAISSEZ CE MANUEL AVEC L’UTILISATEUR

Technical specifications

Materials: - Body: DZR low-lead brass

- Cover: glass reinforced nylon PA66M40/1

- Control stem: stainless steel

- Moving parts: DZR low-lead brass

- Diaphragm & seals: EPDM

- Compensation piston rings: PTFE

- Filter stainless steel

- Seat: stainless steel

- Shuttle: PPSG40

Max working pressure: 300 psi (20 bar) Downstream pressure setting range: 15 - 90 psi (1 - 6 bar) Factory setting: 45 psi (3 bar) Max. working temperature: 180°F (80°C) Pressure gauge scale: 0 - 100 psi (0 - 7 bar) Filter mesh size: 0.51 mm (35 mesh) Suitable fluids: water

Main connections: -NPT female and sweat union 1/2", 3/4", 1", 1 1/4"

-Press union 3/4" Lay length (3/4" press connection): 4-1/4" Pressure gauge connection: 1/8" NPT female

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APPROVALS

1. ICC-ES certified to ASSE 1003, CSA B356, NSF 61 and NSF 372.

2. NSF/ANSI 372-2011, 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, certified by ICC-ES, file PMG-1360.

Hydraulic characteristics

Graph 1 (Circulation speed)

V (f/s)

6 1.8

4 1.2

3 0.9

2 0.6

1.5

1”

0.2

1 1/4”1/2” 3/4”

506070

2.5

0.3

0.4

0.5

1.5

0.3

0.9

0.05

0.1

V (m/s)

0.45

0.3

0.150.5

0.1

(gpm)

(/s)

Flow rate

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Graph 2 (Pressure drop)

∆

p (psi)

FALL OFF PRESSURE

1/2 in

3/4 in

1 in

1 1/4 in

∆

p (kPa)

150

117 103

68 62

1.5

0.4

0.5

0.9

0.05

Reference values: Upstream pressure = 115 psi (800 kPa)

0.1

0.2

0.3

506070

2.5

1.5

(gpm)

(/s)

Flow rate

Downstream presssure = 45 psi (310 kPa)

Sizing procedure

Flow velocity is recommended to be kept within 3 to 6 feet per second when calculating the correct pressure reducing valve size. This will prevent noise in the pipes and rapid wear of appliances.

The correct diameter of the pressure reducing valve is taken from graph 1 on the basis of the design flow rate taking into account an ideal flow velocity of between 3 and 6 f/s (blue band).

Example: For 8 gpm, select the 3/4” size valve (see arrow on graph 1).

The pressure drop is taken from graph 2 also on the basis of where the design flow rate intersects the curve for the valve size already selected (the downstream pressure falls by an amount equal to the pressure drop, with respect to the set pressure at no flow condition).

Example: For 8 gpm the Dp = 7.3 psi (see arrow on graph 2).

Nominal Flow Rate (6 fps)

Size ½"" ¾" 1" 1¼"

GPM 5.6 10 15.5 25.5

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Installation

1) Turn all the faucets on before installing the pressure reducing valve, to flush the system and expel any air remaining in the pipes.

2) Install shut-off valves upstream and downstream to facilitate maintenance operations.

3) The pressure reducing valve may be installed on either vertical or horizontal pipe. However, it must not be installed upside down.

4) Close the downstream shut-off valve.

5) This mechanical pre-adjustment system, with the operating knob and pressure indicator visible from both sides, allows the pressure reducing valve to be set to the required value in the system prior to installation. The pressure indicator features incremental step movement, so that the pressure can be adjusted continuously and the value displayed at 15 psi increments.

6) Set using the operating knob on the upper part of the valve. The pressure reducing valves are factory set to a pressure of 45 psi.

7) Because the pre-adjustment dial displays in 15 psi increments, the optional downstream outlet pressure gauge can be used to show the exact outlet pressure, which is especially useful for applications requiring this precision.

8) After installation, the internal mechanism will automatically control the pressure, until the set value has been reached.

9) Slowly reopen the downstream shut-off valve.

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Installation recommendations

1. Installation below ground

Installation below the ground is not advisable.

2. Outdoor installation Pressure reducing valves should not be installed outside the building unless properly protected from

freezing and the weather.

3. Water hammer

Water hammer is a common reason for pressure reducing valve failures. Specific devices should be installed to absorb water hammer for systems with this risk.

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.

Code Description Face-to-Face Dimension

NA11304 Jumper nipple for 535H ½" series 3 inch NA11305 Jumper nipple for 535H ¾" series 3

/16 inch

NA11306 Jumper nipple for 535H 1" series 3 ¾ inch NA11307 Jumper nipple for 535H 1¼" series 4

/16 inch

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Maintenance

The cartridge, containing the diaphragm, strainer, seat, valve plug and compensating piston, is pre-assembled as a self-contained unit with a cover and can be removed for inspection and maintenance. When checking, cleaning or replacing the cartridge:

1) Shut off the inlet and outlet isolation valves.

2) The downstream pressure setting can be left at the set value.

3) Remove the upper cover, using a spanner. This cover is integral with the cartridge.

4) Check and clean the filter.

5) If needed, the self-contained cartridge can be completely replaced. When the cartridge is screwed back into the body, the pressure indicating window will return the value to the original position.

6) Reopen the shut off valves and the pressure will return to the original set value.

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0 S 8 5

3 5

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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 tank between the pressure reducing valve and the water heater to absorb the increased pressure, caused by water expansion from heating.

2.The pressure reducing valve does not

maintain downstream setting value

If the pressure reducing valve

does not maintain the downstream setting, it most likely is due to impurities acccumulating on the valve seat, causing unnecessary flow to pass-through, in cr ea si ng th e d ow ns tr ea m pressure. Proper maintenance and cleaning of the removable cartridge is recommended.

Leave this manual at the service of users for their use

Caleffi North America, Inc. 3883 W. Milwaukee Road Milwaukee, WI 53208 T: 414.238.2360 F: 414.238.2366

08-12-16