P74F Excelon® 74 Soft Start/Dump Valve 3/8", 1/2", 3/4" Port Size ● EXCELON design allows inline or modular installation ● Controlled increase of downstream pressure on start up ● Solenoid or air pilot operation ● High forward flow capacity ● High flow dump facility ● Optional manual dump facility with lockout Soft start valves allow a controlled increase of pressure onto downstream cylinder/machines offering protection to personnel and equipment. The dump feature can be activated by removing power to the solenoid or the air pilot, or by operating the manual dump. Note: Turn on system air supply prior to applying pilot signal to operator. Failure to do so may cause valve to continuously exhaust. Technical Data Fluid: Compressed air Maximum pressure solenoid operated: Dependant on solenoid rating [must not exceed 17 bar (250 psig)] Maximum pressure pilot operated: 17 bar (250 psig) max. Minimum operating pressure: 3 bar (44 psig) Operating temperature solenoid operated: Dependant on solenoid rating [must be within range -20°C* to +80°C (0°F* to +175°F)] Operating temperature pilot operated: -20°C* to +80°C (0°F* to +175°F) Materials: Body: Aluminium Intermediate body: Aluminium Elastomers: Synthetic materials Filter discs: Sintered plastic Internal components: Brass/steel Top plate: Zinc Exhaust bonnet: Zinc * Consult our technical service for use below +2°C Air pilot port: ISO Rc1/4 with ISO Rc main ports ISO Rc1/4 with ISO G main ports 1/4” PTF with PTF main ports Exhaust port: ISO G1/2 with ISO G main ports ISO G1/2 with ISO Rc main ports 1/2” PTF with PTF main ports Typical flow with 6,3 bar (90 psig) inlet pressure and pressure drop of 0.5 bar (7 psig): 57 dm3/s (P1 to P2 = Cv 4.4) (P2 to P3 = Cv 5.6) Snap pressure: Full flow when downstream pressure reaches 50 – 80% of inlet pressure Charge time: For 2 litre downstream volume and 6,3 bar (90 psig) inlet pressure: 0,2 sec. minimum 76 sec. maximum 7/97 Ordering Information See Ordering Information on the following pages. ISO Symbols Solenoid operated Our policy is one of continuous research and development. We reserve the right to amend, without notice, the specifications given in this document. Air pilot N/AL.8.200.610.01 P74F Typical Performance Characteristics PORT SIZE: 1/2" bar g MAXIMUM CHARGE TIME psig bar g psig FLOW CHARACTERISTICS 0,8 2 LITRE DOWNSTREAM VOLUME 16 INLET PRESSURE: bar g (psig) 200 OUTLET PRESSURE PRESSURE DROP 10 6,3 8 (91) (116) (150) 3 4,0 (44) (58) 10 0,6 8 6 0,4 4 12 160 120 SNAP POINT 80 0,2 4 2 0 8 40 0 0 0 0 20 40 40 80 60 120 80 160 100 200 0 dm3/s 0 20 40 60 80 100 120 CHARGE TIME - (S) 240 scfm AIR FLOW Ordering Information. Models listed are with ISO G ports. Solenoid models are with 24 V d.c. coils and plug without indicator. Port Size G3⁄8 G1⁄2 G3⁄4 Solenoid Operated* Model P74F-3GC-PFA P74F-4GC-PFA P74F-6GC-PFA Weight kg 1,08 1,05 1,41 Air Pilot Operated Model P74F-3GA-NNN P74F-4GA-NNN P74F-6GA-NNN Weight kg 1,05 1,02 1,35 * To select other solenoid type and coil voltage refer to alternative models table below. Alternative Models P 7 4 F - ★ ★ ★ - ★★ ★ Port Size 3/8" 1/2" 3/4" Substitute 3 4 6 Connectors 3 pin plug with cable gland, no indicator Without Substitute A Threads PTF ISO Rc taper ISO G parallel Substitute A B G Coil Voltage Substitute Operator Substitute Air pilot** A Air pilot with manual lockout slide** B 22 mm miniature solenoid C 22 mm miniature solenoid with manual lockout slide D CNOMO solenoid L CNOMO solenoid with manual lockout slide M 24 V d.c. 12 V d.c. 6 V d.c. 220/240 V 50/60 Hz 110/120 V 50/60 Hz No coil No solenoid Nominal Power Rating 2W 2W 2W 4/2,5 VA N F E D B 4/2,5 VA A 2W Z N Solenoid Manual Operator Shrouded push button None Substitute P N ** to order air pilot models also substitute ‘NNN’ at digits 8, 9 and 10 e.g. P74F-4GA-NNN. N/AL.8.200.610.02 Our policy is one of continuous research and development. We reserve the right to amend, without notice, the specifications given in this document. 7/97 P74F Accessories Quikclamp and Quikclamp Wall Bracket Ø 50 mm Pressure Gauge 4314-52 4 bar (60 psig): 10 bar (150 psig): 25 bar (360 psig): R1/8 Connection 1/8 PTF Connection Manual Shut-off with Lockout 18-013-012 18-013-013 18-013-014 18-013-202 18-013-204 18-013-206 Factory fit option only. See alternative models table. Plug with Cable Gland for 22 mm Solenoid Exhaust Port Silencer MB004B (R1/2) MB004A (1/2 PTF) M/P24121/1* M/P24121/2 M/P24121/3 M/P19063 12–24 V ac/dc 150–230 V ac 150–230 V ac Indicator type Indicator type Indicator type No Indicator * Reduced light intensity at 12 V. Dimensions mm (inches) 37 (1.46) 96 (3.78) min. 84 (3.31) 96 (3.78) min. 37 (1.46) 74 (2.91) 37 (1.46) 74 (2.91) Air pilot operated plus manual shut-off with lockout 84 (3.31) 84 (3.31) 165 (6.50) 212 (8.35) Rc1/4 (1/4 PTF) 162 (6.38) 30 (1.18) A/F 107 (4.21) G1/2 (1/2 PTF) 30 (1.18) A/F 221 (8.70) G1/2 (1/2 PTF) 30 (1.18) A/F 144 (5.67) G1/2 (1/2 PTF) 30 (1.18) A/F 88 (3.46) G1/2 (1/2 PTF) 156 (6.14) 37 (1.46) 84 (3.31) Solenoid operated plus manual shut-off with lockout 111 (4.37) max. Air pilot operated 111 (4.37) max. Solenoid operated Rc1/4 (1/4 PTF) Service Kits Item Service kit Type All models Part number 4384-220 Service kit includes seals for ports, body, flow adjuster, exhaust bonnet, lockout assembly, CNOMO solenoid, flow adjuster, top plate, feed spool, soft start spool and exhaust piston. Also included; main valve, feed valve pin, tamper resistant plug and lockout spring. 7/97 Our policy is one of continuous research and development. We reserve the right to amend, without notice, the specifications given in this document. N/AL.8.200.610.03 P74F Bracket Mounting Quikclamp and Quikclamp Wall Bracket Use 6 mm (7/32") screws to mount bracket to wall Port CL 51 (2.01) 82,5 (3.25) 101 (3.98) 24 (0.95) Bracket Kit Reference Item Quikclamp and Quikclamp Wall Bracket Part Number 4314-52 Warning These products are intended for use in industrial compressed air systems only. Do not use these products where pressures and temperatures can exceed those listed under ‘Technical Data’. Before using these products with fluids other than those specified, for non-industrial applications, life-support systems, or other applications not within published specifications, consult NORGREN. Through misuse, age, or malfunction, components used in fluid power systems can fail in various modes. The system designer is warned to consider the failure modes of all component parts used in fluid power systems and to provide adequate safeguards to prevent personal injury or damage to equipment in the event of such failure. System designers must provide a warning to end users in the system instructional manual if protection against a failure mode cannot be adequately provided. System designers and end users are cautioned to review specific warnings found in instruction sheets packed and shipped with these products. Water vapor will pass through these units and will condense into liquid if air temperature drops in the downstream system. Install an air dryer if water condensation could have a detrimental effect on the application. N/AL.8.200.610.04 Our policy is one of continuous research and development. We reserve the right to amend, without notice, the specifications given in this document. 7/97