Búsqueda de Productos

    BUSQUE AHORA TODAS SUS ERIE CONTROLS SOLUCIONES

    Radwell está aquí para proveer todas sus necesidades de planta.

    Radwell es un distribuidor, revendedor o representante autorizado de los productos que aparecen en este sitio web. Todos los nombres de productos, marcas registradas, marcas y logotipos usados en este sitio son propiedad de sus respectivos propietarios. La representación, descripción o venta de productos con estos nombres, marcas registradas, marcas y logotipos tiene únicamente fines identificativos y no pretende indicar afiliación o autorización alguna por parte de ninguno de los poseedores de los derechos.

    Resultados del filtro
    Resultados 601-650 de 1,000.
    SCHNEIDER ELECTRIC VT3417G13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3417G13B020

    VB: 1 IN. 3W MIX/DIV. ZONE. SWT. BR. 7.5 CV. 17 PSI. ACT (AG13B020): ELEC. 2POS. SR. NC. 110-120 VAC. APP. N1
    ✓ ¡EN STOCK!
    $224,52 Nuevo $224,52
    $134,71
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3413G13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3413G13A020

    VB: 1 IN. 3W MIX/DIV. ZONE. SWT. BR. 4 CV. 25 PSI. ACT (AG13A020): ELEC. 2POS. SR. NC. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $273,14 Nuevo $273,14
    $163,88
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3341G13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3341G13B020

    VB: 3/4 IN, 3W MIX/DIV, ZONE, FLR, BR, 1.5 CV, 60 PSI, ACT (AG13B020): ELEC, 2POS, SR, NC, 110-120 VAC, APP, N1
    ✓ ¡EN STOCK!
    $199,19 Nuevo $199,19
    $119,51
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3327H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3327H13A020

    HVAC VALVE, VT3 SERIES, NPT CONNECTION, 3/4 IN, 3W MIX/DIV, 24VAC, ZONE
    ✓ ¡EN STOCK!
    $214,52 Nuevo $214,52
    $128,71
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3325H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3325H13A020

    VB: 3/4 IN, 3W MIX/DIV, ZONE, NPT, BR, 5 CV, 25 PSI, ACT (AH13A020): ELEC, 2POS, SR, NC, 24 VAC, APP, IP31
    ✓ ¡EN STOCK!
    $216,52 Nuevo $216,52
    $129,91
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3325G13U020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3325G13U020

    VB: 3/4 IN, 3W MIX/DIV, ZONE, NPT, BR, 5 CV, 20 PSI, ACT (AG13U020): ELEC, 2POS, SR, NC, 110-240 VAC, APP, N1
    ✓ ¡EN STOCK!
    $199,50 Nuevo $199,50
    $119,70
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3325G13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3325G13B020

    VB: 3/4 IN. 3W MIX/DIV. ZONE. NPT. BR. 5 CV. 20 PSI. ACT (AG13B020): ELEC. 2POS. SR. NC. 110-120 VAC. APP. N1
    ✓ ¡EN STOCK!
    $199,21 Nuevo $199,21
    $119,52
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3325G13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3325G13A020

    VB: 3/4 IN. 3W MIX/DIV. ZONE. NPT. BR. 5 CV. 20 PSI. ACT (AG13A020): ELEC. 2POS. SR. NC. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $148,75 Nuevo $148,75
    $89,25
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3322H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3322H13A020

    VB: 3/4 IN, 3W MIX/DIV, ZONE, NPT, BR, 3 CV, 50 PSI, ACT (AH13A020): ELEC, 2POS, SR, NC, 24 VAC, APP, IP31
    ✓ ¡EN STOCK!
    $218,52 Nuevo $218,52
    $131,11
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3315H13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3315H13B020

    VB: 3/4 IN, 3W MIX/DIV, ZONE, SWT, BR, 5 CV, 25 PSI, ACT (AH13B020): ELEC, 2POS, SR, NC, 110-120 VAC, APP, N1
    ✓ ¡EN STOCK!
    $209,78 Nuevo $209,78
    $125,87
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3315H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3315H13A020

    VB: 3/4 IN. 3W MIX/DIV. ZONE. SWT. BR. 5 CV. 25 PSI. ACT (AH13A020): ELEC. 2POS. SR. NC. 24 VAC. APP. IP31
    ✓ ¡EN STOCK!
    $209,78 Nuevo $209,78
    $125,87
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3315G13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3315G13B020

    VB: 3/4 IN. 3W MIX/DIV. ZONE. SWT. BR. 5 CV. 20 PSI. ACT (AG13B020): ELEC. 2POS. SR. NC. 110-120 VAC. APP. N1
    ✓ ¡EN STOCK!
    $196,02 Nuevo $196,02
    $117,61
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3313G13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3313G13A020

    VB: 3/4 IN. 3W MIX/DIV. ZONE. SWT. BR. 4 CV. 25 PSI. ACT (AG13A020): ELEC. 2POS. SR. NC. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $153,96 Nuevo $153,96
    $92,37
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3325

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3325

    POPTOP 2-POSITION ZONE VALVES, VALVE BODY, 3/4 INCH NPT, 3-WAY, 5.0 CV
    ✓ ¡EN STOCK!
    $79,64 Nuevo $79,64
    $47,78
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC AG23D02A

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    AG23D02A

    POPTOP 2-POSITION ACTUATORS, NORMALLY OPEN ACTUATORS, 2-WAY ONLY,N/O ACTUATOR,208V W/END SWITCH
    ✓ ¡EN STOCK!
    $175,00 Nuevo $175,00
    $133,00
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC AG14B02A

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    AG14B02A

    ACTUATOR, HI-TEMP, 120 VAC, 50/60 HZ, W/AUXILLIARY SWITCH, NORMALLY CLOSED
    ✓ ¡EN STOCK!
    $152,71 Nuevo $152,71
    $116,06
    SCHNEIDER ELECTRIC 0691C0527GB00

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    0691C0527GB00

    ERIE CONTROLS , 0691C0527GB00, SOLENOID VALVE, 2WAY, 120V, 60HZ, 1/2IN NPT STEAM
    ✓ ¡EN STOCK!
    $126,43 Nuevo $126,43
    $43,28
    SCHNEIDER ELECTRIC VT3213G14T020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3213G14T020

    VB: 1/2 IN. 3W MIX/DIV. ZONE. SWT. BR. 4 CV. 25 PSI. ACT (AG14T020): ELEC. 2POS. SR. NC. 277 VAC. APP. N1
    ✓ ¡EN STOCK!
    $203,71 Nuevo $203,71
    $122,22
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC AG13T000

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    AG13T000

    POPTOP 2-POSITION ACTUATORS, GENERAL CLOSE-OFF (GCO) ACTUATORS, 2POS 277VAC ACTUATOR
    ✓ ¡EN STOCK!
    $107,72 Nuevo $107,72
    $64,63
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3427H13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3427H13B020

    VB: 1 IN, 3W MIX/DIV, ZONE, NPT, BR, 8 CV, 20 PSI, ACT (AH13B020): ELEC, 2POS, SR, NC, 110-120 VAC, APP, N1
    ✓ ¡EN STOCK!
    $260,76 Nuevo $260,76
    $156,46
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3427H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3427H13A020

    VB: 1 IN, 3W MIX/DIV, ZONE, NPT, BR, 8 CV, 20 PSI, ACT (AH13A020): ELEC, 2POS, SR, NC, 24 VAC, APP, IP31
    ✓ ¡EN STOCK!
    $260,76 Nuevo $260,76
    $156,46
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3427G13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3427G13B020

    VB: 1 IN. 3W MIX/DIV. ZONE. NPT. BR. 8 CV. 17 PSI. ACT (AG13B020): ELEC. 2POS. SR. NC. 110-120 VAC. APP. N1
    ✓ ¡EN STOCK!
    $234,55 Nuevo $234,55
    $140,73
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3427G13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3427G13A020

    VB: 1 IN, 3W MIX/DIV, ZONE, NPT, BR, 8 CV, 17 PSI, ACT (AG13A020): ELEC, 2POS, SR, NC, 24 VAC, APP, N1
    ✓ ¡EN STOCK!
    $232,40 Nuevo $232,40
    $139,44
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3415G13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3415G13B020

    VB: 1 IN, 3W MIX/DIV, ZONE, SWT, BR, 5 CV, 20 PSI, ACT (AG13B020): ELEC, 2POS, SR, NC, 110-120 VAC, APP, N1
    ✓ ¡EN STOCK!
    $280,79 Nuevo $280,79
    $168,48
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3343G13U020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3343G13U020

    VB: 3/4 IN. 3W MIX/DIV. ZONE. FLR. BR. 4 CV. 25 PSI. ACT (AG13U020): ELEC. 2POS. SR. NC. 110-240 VAC. APP. N1
    ✓ ¡EN STOCK!
    $182,09 Nuevo $182,09
    $109,25
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT3343G13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT3343G13A020

    VB: 3/4 IN. 3W MIX/DIV. ZONE. FLR. BR. 4 CV. 25 PSI. ACT (AG13A020): ELEC. 2POS. SR. NC. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $146,59 Nuevo $146,59
    $87,95
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2211H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2211H13A020

    VB: 1/2 IN, 2W, ZONE, SWT, BR, 1 CV, 75 PSI, ACT (AH13A020): ELEC, 2POS, SR, NC, 24 VAC, APP, IP31
    ✓ ¡EN STOCK!
    $141,55 Nuevo $141,55
    $84,93
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS3343G14A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS3343G14A020

    VALVE ASSEMBLY, 24VAC, 3/4 INCH, INVERTED FLARE CONNECTION, THREE-WAY, HIGH TEMPERATURE, TWO POSITION STEAM ZONE VALVE
    ✓ ¡EN STOCK!
    $226,62 Nuevo $226,62
    $135,97
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS3342G14B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS3342G14B020

    VALVE ASSEMBLY, THREE WAY, 3/4 INCH INVERTED FLARE, 3.0 CV, 120VAC, SPRING RETURN, HIGH TEMPERATURE, TWO POSITION STEAM ZONE VALVE
    ✓ ¡EN STOCK!
    $194,67 Nuevo $194,67
    $116,80
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2427H14B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2427H14B020

    VB: 1 IN. 2W. ZONE. NPT. BR. 8 CV. 20 PSI. ACT (AH14B020): ELEC. 2POS. SR. NC. 110-120 VAC. APP. N1
    ✓ ¡EN STOCK!
    $225,00 Nuevo $225,00
    $149,00
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2427H14A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2427H14A020

    VB: 1 IN. 2W. ZONE. NPT. BR. 8 CV. 20 PSI. ACT (AH14A020): ELEC. 2POS. SR. NC. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $269,78 Nuevo $269,78
    $161,87
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2427G14A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2427G14A020

    VB: 1 IN. 2W. ZONE. NPT. BR. 8 CV. 17 PSI. ACT (AG14A020): ELEC. 2POS. SR. NC. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $247,66 Nuevo $247,66
    $148,59
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2417H24A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2417H24A020

    VB: 1 IN, 2W, ZONE, SWT, BR, 7.5 CV, 20 PSI, ACT (AH24A020): ELEC, 2POS, SR, NO, 24 VAC, APP, N1
    ✓ ¡EN STOCK!
    $267,33 Nuevo $267,33
    $160,40
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2212H14B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2212H14B020

    VB: 1/2 IN, 2W, ZONE, SWT, BR, 2.5 CV, 50 PSI, ACT (AH14B020): ELEC, 2POS, SR, NC, 110-120 VAC, APP, N1
    ✓ ¡EN STOCK!
    $205,95 Nuevo $205,95
    $123,57
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2212H14A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2212H14A020

    VB: 1/2 IN, 2W, ZONE, SWT, BR, 2.5 CV, 50 PSI, ACT (AH14A020): ELEC, 2POS, SR, NC, 24 VAC, APP, N1
    ✓ ¡EN STOCK!
    $205,95 Nuevo $205,95
    $123,57
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2212G24U020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2212G24U020

    VB: 1/2 IN. 2W. ZONE. SWT. BR. 2.5 CV. 40 PSI. ACT (AG24U020): ELEC. 2POS. SR. NO. 110-240 VAC. APP. N1
    ✓ ¡EN STOCK!
    $205,21 Nuevo $205,21
    $123,12
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2211G24B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2211G24B020

    POPTOP VALVE ASSEMBLY, VS2 SERIES,1/2 INCH SWEAT CONNECTION, 2-WAY, 60# 120V, NORMALLY OPEN, HIGH TEMPERATURE
    ✓ ¡EN STOCK!
    $216,33 Nuevo $216,33
    $129,80
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2211G24A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2211G24A020

    POPTOP VALVE ASSEMBLY, VS2 SERIES,1/2 INCH SWEAT CONNECTION, 2-WAY, 60# 24V, NORMALLY OPEN, HIGH TEMPERATURE
    ✓ ¡EN STOCK!
    $216,33 Nuevo $216,33
    $129,80
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VM3427T33A000

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VM3427T33A000

    ERIE POPTOP, ZONE VALVE ASSEMBLIE, 1 IN, 3-WAY MIXING, NPT, BRASS, 8 CV, 35 PSI, FLOATING, NON-SPRING RETURN, 24 VAC, NO LEADS, NEMA 1
    ✓ ¡EN STOCK!
    $372,21 Nuevo $372,21
    $223,32
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2327H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2327H13A020

    VB: 3/4 IN. 2W. ZONE. NPT. BR. 7.5 CV. 20 PSI. ACT (AH13A020): ELEC. 2POS. SR. NC. 24 VAC. APP. IP31
    ✓ ¡EN STOCK!
    $204,34 Nuevo $204,34
    $122,61
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2327G23B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2327G23B020

    VB: 3/4 IN, 2W, ZONE, NPT, BR, 7.5 CV, 17 PSI, ACT (AG23B020): ELEC, 2POS, SR, NO, 110-120 VAC, APP, N1
    ✓ ¡EN STOCK!
    $158,20 Nuevo $158,20
    $94,92
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2327G23A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2327G23A020

    VB: 3/4 IN. 2W. ZONE. NPT. BR. 7.5 CV. 17 PSI. ACT (AG23A020): ELEC. 2POS. SR. NO. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $161,04 Nuevo $161,04
    $96,62
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2327G13U020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2327G13U020

    VB: 3/4 IN. 2W. ZONE. NPT. BR. 7.5 CV. 17 PSI. ACT (AG13U020): ELEC. 2POS. SR. NC. 110-240 VAC. APP. N1
    ✓ ¡EN STOCK!
    $192,48 Nuevo $192,48
    $115,49
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2325H13B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2325H13B020

    VB: 3/4 IN. 2W. ZONE. NPT. BR. 5 CV. 25 PSI. ACT (AH13B020): ELEC. 2POS. SR. NC. 110-120 VAC. APP. N1
    ✓ ¡EN STOCK!
    $204,34 Nuevo $204,34
    $122,61
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2325H13A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2325H13A020

    VB: 3/4 IN. 2W. ZONE. NPT. BR. 5 CV. 25 PSI. ACT (AH13A020): ELEC. 2POS. SR. NC. 24 VAC. APP. IP31
    ✓ ¡EN STOCK!
    $202,50 Nuevo $202,50
    $121,50
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2325G23B020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2325G23B020

    VB: 3/4 IN, 2W, ZONE, NPT, BR, 5 CV, 20 PSI, ACT (AG23B020): ELEC, 2POS, SR, NO, 110-120 VAC, APP, N1
    ✓ ¡EN STOCK!
    $190,98 Nuevo $190,98
    $114,59
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VS2212H24A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VS2212H24A020

    VALVE ASSEMBLY, 2 POSITION NORMALLY OPEN, 2-WAY, 1/2 INCH SWT, 2.5CV, MOPD 50 PSI, SYSTEM MAX: STEAM 15 PSI/ WATER 300 PSI
    ✓ ¡EN STOCK!
    $116,80 Nuevo $116,80
    $45,64
    SCHNEIDER ELECTRIC VM3427P33A000

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VM3427P33A000

    VB: 1 IN. 3W MIX. ZONE. NPT. BR. 8 CV. 35 PSI. ACT (AP33A000): ELEC. PROP. 0-10 VDC/4-20MADC. NSR. 24 VAC. NO LEADS. N1
    ✓ ¡EN STOCK!
    $425,38 Nuevo $425,38
    $255,23
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VM3427P13A000

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VM3427P13A000

    VB: 1 IN. 3W MIX. ZONE. NPT. BR. 8 CV. 35 PSI. ACT (AP13A000): ELEC. PROP. 0-10 VDC/4-20MADC. SR. NC. 24 VAC. NO LEADS. N1
    ✓ ¡EN STOCK!
    $569,69 Nuevo $569,69
    $341,81
    Repare los suyos Contactenos
    SCHNEIDER ELECTRIC VT2427H23A020

    SCHNEIDER ELECTRIC

    ERIE CONTROLS

    VT2427H23A020

    VB: 1 IN. 2W. ZONE. NPT. BR. 8 CV. 20 PSI. ACT (AH23A020): ELEC. 2POS. SR. NO. 24 VAC. APP. N1
    ✓ ¡EN STOCK!
    $207,25 Nuevo $207,25
    $124,35
    Repare los suyos Contactenos
    Anterior  Siguiente
    8 9 10 11 12 13 14 15 16 17 18