N143-0472

N143-0472 GIACOMINI | Alldatasheet

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Technical content

Description

Positive action safety valves, not enabled by external energy, designed to intercept the flow of fuel to the burner in order to prevent the water temperature in the system delivery circuit from reaching the boiling temperature value. The valve closes with:

• the perforation or cutting of the capillary pipe and/or the sensor bulb. As these are positive action valves, they cannot be reset in this case.
• the rising water temperature, when it reaches the calibration point. In this case, the valve can be reset but only if the temperature falls to at least 11±2 °C. The N143 valves comply with “PED” directive 2014/68/EU, and are calibrated and approved by INAIL (in accordance with “R” collection - Technical application specifications of Title II of Ministerial Decree 01/12/1975). Each valve is supplied with an original copy of the calibration report. This document contains not only the technical data of the valve, but also the serial number (also shown on the seal on the valve itself ). The document is stamped and validated by the INAIL technician who witnessed the calibration operation. Versions and product codes Technical data
• Valve temperature range: -15÷70 °C
• Max. valve working pressure: 1 bar
• Calibration temperature: 98 °C (+0 -5 °C) 110 °C (+0 -5 °C)
• Use: gas (methane, city gas, LPG), diesel oil and fuel oil
• Rp threaded connections (body in brass): (1/2” - 3/4” - 1”) in accordance with EN 10226
• Rp threaded connections: (1 1/4” - 1 1/2” - 2”) in accordance with EN 10226
• PN16 flanged connections: (DN65 ÷ DN150) in accordance with ISO 7005
• Housing connection: G 1/2”
• Capillary pipe length: 5 m
• Valve mechanical resistance: Group 2 (in accordance with EN 13611:2007) Materials
• Body and covers DN15÷25: brass OT-58 (UNI EN 12164)
• Body and covers DN32÷150: die-cast aluminium (UNI EN 1706)
• Internal components: aluminium 11S (UNI 9002-5), stainless steel 430 F (UNI EN 10088), brass OT-58 (UNI EN 12164)
• Housing: brass OT-58 (UNI EN 12164)
• Seal elements: rubber FKM (UNI 7702) Components Valve open Valve close 4 5 6 8 13 14 Legend 1. Reset knob 2. O-Ring (cover seal) 3. Seal washer 4. Shutter 5. Fixing nut 6. Central pin 7. Body 8. Cover fixing screws 9. Cover 10. Green label (valve open) 11. Release unit seal 12. Bulb fixing screw 13. Housing 14. Bulb seal 15. Release unit 16. Bulb 17. Capillary pipe N143 Note. The calibration report must be stored with great care; copies cannot be issued if the original is lost.Product code Size Calibration temp. Connections type N143Y003 1/2” 98 °C Threaded connections N143Y004 3/4” N143Y005 1” N143Y006 1”1/4 N143Y007 1”1/2 N143Y008 2” N143Y033 1/2” 110 °C N143Y034 3/4” N143Y035 1” N143Y036 1”1/4 N143Y037 1”1/2 N143Y038 2” N143Y106 DN65 98 °C Flanged connections N143Y108 DN80 N143Y110 DN100 N143Y112 DN125 N143Y115 DN150 N143Y136 DN65 110 °C N143Y138 DN80 N143Y140 DN100 N143Y142 DN125 N143Y145 DN150

• It is necessary to close the gas/fuel flow before installing.
• Check the line pressure IS NO GREATER than the maximum pressure declared on the product label.
• They are usually installed downstream from the regulation elements. Install with the arrow (indicated on the body (8) of the device) facing towards the service supply. They can also be installed vertically, without jeopardising their functioning. They cannot be positioned upside down (with the knob (1) facing downwards).
• When installing, make sure no debris or metal residue enters the device.
• If the device is threaded, check that the pipe thread is not too long, as this could damage the device body during the threading phase. Do not use the knob as a lever when threading; use the appropriate tool.
• If the device is flanged, make sure the input/output counter-flanges are perfectly parallel so the body is not subjected to unnecessary mechanical stress. Calculate the space for inserting the gasket. If there is too much remaining space once the gasket has been inserted, do not try to fill it by over-tightening the device bolts.
• In any case, check the system seal after installing the device.
• The bulb (16) and its housing (13) must be immersed in the fluid flowing out of the boiler, no further than 1m from the boiler itself. Make sure there are no interception devices between the bulb (16) and the boiler.
• Fix the bulb (16) to the housing (13), tightening the screw (12) and plumbing with the seal (14).
• Fill the housing with paste or liquid (e.g. diathermic oil) with high thermal conductivity to ensure the perfect thermal contact between the inside of the pipe and the bulb (16).
• Wind up the excess capillary pipe and position it near the body of the valve (7). Make sure the capillary pipe is not damaged, crushed or too bent.
• Do not alter the position of the release unit (15) (plumbed with a seal (11) in the correct position during manufacture). Allowed installation Not allowed installation Operation - manual reset If the valve is triggered, you must wait until the water temperature falls to: 87 ±2 °C (for valves with 98 °C calibration temperature) 99 ±2 °C (for valves with 110 °C calibration temperature) before attempting to reset it. Before resetting the valve, check the reason why it was triggered. Pull the reset knob (1 ) upwards and wait a moment until the pressure upstream and downstream from the valve is balanced. Turn the knob 180° clockwise. Pull the reset knob (1) upwards, then turn the knob 180° clockwise again until it is connected (see figure 1). If it is visible, the green label (10) below the reset knob (1) indicates that the fuel shut-off valve is open. Valve closed Valve in closed position. Only the red label is visible. Reset operations 1 - Turn the knob 180° 2 - Pull the knob upwards 3 - Turn the knob 180° again Valve open Valve in open position. Both the red and green labels are visible. Seen from above Seen from above Figure 1 180° 180° Warning. Installation/wiring/maintenance operations must be carried out by qualified personnel. Note. The reset operations must be carried out with the red label in line with the capillary pipe lockout (or release unit (15).

1) Manual shut-off valve 2) Fuel shut-off valve 3) Probe housing on tool holder manifold Methane (ref.1) – LPG (ref.2) rif. 1) 0,1 1 2 3 5 10 20 30 50 100 200 300 500 1000 2000 3000 5000 10000 Q (Nm3/h) 1 2 3 5 10 20 30 50 100 200 300 500 1000 2000 3000 5000 0,2 0,3 0,5 100 200/uni0394P (mbar) rif. 2) 1/2” 3/4” 1” 2” DN65DN80DN100 DN125 DN150 1 1/2” 1 1/4” Diesel at 20 °C – Fuel oil (< 3 °E at 20 °C) 100 100 1000 1000 10000 Q (kg/h) /uni0394P (mm H2O) Losses of pressure

Shut-off valve with positive action for gas (methane, city gas, LPG), diesel oil and fuel oil. Rp threaded connections (body in brass): 1/2” , 3/4” , 1” (in accordance with EN 10226). Rp threaded connections: 1 1/4” , 1 1/2” , 2” (in accordance with EN 10226). PN16 flanged connections: DN65 - DN150 (in accordance with ISO 7005). Housing connection: G 1/2” . Body and covers DN15÷25: brass OT-58 (UNI EN 12164). Body and covers DN32÷100: die-cast aluminium (UNI EN 1706). Bodies DN125- 150: Die-cast aluminium. Covers DN125-150: Galvanised steel (UNI EN 10088). Internal components: aluminium 11S (UNI 9002-5), stainless steel 430 F (UNI EN 10088), brass OT-58 (UNI EN 12164). Housing: brass OT-58 (UNI EN 12164). Seal elements: rubber FKM (UNI 7702). Calibration temperature: 98 °C (+0 -5 °C) or 110 °C Group 2 (in accordance with EN 13611:2007). Compliance with “PED” directive 2014/68/EU. INAIL (ISPESL) compliant. Dimensions B A C Product code Size A [mm] B [mm] C [mm] N143Y003 N143Y033 1/2” 66 109 34 N143Y004 N143Y034 3/4” 66 109 34 N143Y005 N143Y035 1” 82 122 44 N143Y006 N143Y036 1 1/4” 160 196 140 N143Y007 N143Y037 1 1/2” 160 196 140 N143Y008 N143Y038 2” 160 216 140 N143Y106 N143Y136 DN65 290 328 198 N143Y108 N143Y138 DN80 310 335 198 N143Y110 N143Y140 DN100 350 360 450 N143Y112 N143Y142 DN125 480 445 450 N143Y115 N143Y145 DN150 480 460 450 Additional information For further information, visit the website www.giacomini.com or contact the technical service: ' +39 0322 923372 6 +39 0322 923255 * consulenza.prodotti@giacomini.com information in this technical sheet does not exempt the user from scrupulously observing the existing regulations and standards relating to good technical practices. Giacomini S.p.A. Via per Alzo, 39 - 28017 San Maurizio d’Opaglio (NO) Italy