Proportional Throttle Cartridges, Size 16

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Bernard Marshall
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Proportional Throttle Cartridges, Size 16 Q max = 5 l/min, p max = 5 bar, Q N max = 14 l/min at p 1 bar Two-Stage, with Seat-Valve Shut-Off 1 Description Normally closed Seat-valve shut-off from 1

1 Proportional Throttle Cartridges, Size 16 Q max = 5 l/min, p max = 5 bar, Q N max = 14 l/min at p 1 bar Two-Stage, with Seat-Valve Shut-Off 1 Description Normally closed Seat-valve shut-off from 1 Compact construction for cavity type ER to ISO nominal flow ranges More reliable operation over the whole pressure and flow range (high pressure differences) Low headloss All exposed parts with zinc-nickel plating High pressure wet-armature solenoids The slip-on coil can be rotated, and it can be replaced without opening the hydraulic envelope Various plug-connector systems and voltages are available Can be fitted in a line-mounting body Series MVRPSBB two-stage proportional throttle cartridges are size 16, high performance screw-in valves with an M33 x mounting thread. Both the main and pilot stages are designed on the poppet/seat principle and the 1 flow path is therefore virtually leak-free. With these proportional throttle cartridges, the flow rate from 1 is dependent on the control current, and it can be varied continuously and set at any desired level. The throttle cartridges are available in 3 nominal flow ranges. When used with a pressure compensator, these cartridges are particularly suitable for precise and load-compensated lifting and lowering movements, but they can also be used on their own for reliable operation in mobile and industrial applications with large pressure differences. All external parts of the cartridge are zinc-nickel plated to DIN and are thus suitable for use in the harshest operating environments. The slip-on coils can be replaced without opening the hydraulic envelope and can be positioned at any angle through 36. If you intend to manufacture your own cavities or are designing a line-mounting installation, please refer to the section Related data sheets. Symbol 1 3 Technical data General characteristics Designation proportional-throttle cartridge Design seat-valve shut-off, two stage Mounting method screw-in cartridge M33 x Tightening torque 15 Nm ± 1 % Size nominal size 16 mm, cavity type ER Weight.95 kg Reference: 4-P EN-3 Issue: /6

2 General characteristics Mounting attitude Ambient temperature range unrestricted (preferably vertical, coil down) -5 C +6 C Hydraulic characteristics Maximum operating pressure Maximum flow rate Nominal flow rate 5 bar 5 l/min 6, 9, 14 l/min at p = 1 bar <, cm 3 /min (max. 5 drops/min) with oil viscosity 33 mm /s (cst) Flow direction 1 throttle function, see symbols 1 free flow Hydraulic fluid HL and HLP mineral oil to DIN 51 54; for other fluids, please contact BUCHER Hydraulic fluid temperature range Viscosity range Minimum fluid cleanliness Cleanliness class to ISO 446 : C +7 C mm /s (cst), recommended...13 mm /s (cst) class 18/16/13 Electrical characteristics Supply voltage Control current Coil resistance R - cold value at C - max. warm value Recommended PWM frequency (dither) Hysteresis with PWM Reversal error with PWM Sensitivity with PWM Reproducibility with PWM Switching time Relative duty cycle Protection class to ISO 653 / EN 6 59 Electrical connection 1 V DC, 4 V DC 1 V = 3 ma, 4 V = 116 ma 1 V =.64 / 4 V = V = 4. / 4 V = 15. Hz 4 % I N 4 % I N < 1 % I N < % p N see performance graph 1 % IP 65 / IP 67 / IP 69K, see Ordering code (with appropriate mating connector and proper fitting and sealing) 3-pin square plug to ISO 44 / DIN (standard) for other connectors, see Ordering code /6 4-P EN-3/8.14

3 4 Performance graphs measured with oil viscosity 33 mm /s (cst) Q = f ( p; I) Flow rate adjustment characteristic [ 14 ] P15.ai I = 115 / 3 ma 1 / ma 9 / 18 ma 8 / 16 ma Q = f (I; p) Flow rate adjustment characteristic [ 14 ] P14.ai p3bar pbar p15bar p1bar 5 6 / 1 ma p [bar] Q = f ( p; I) Flow rate adjustment characteristic [ 9 ] 15 P73.ai I = 115 / 3 ma Q = f (I; p) Flow rate adjustment characteristic [ 9 ] 15 P75.ai p3bar / ma 9 / 18 ma 8 / 16 ma 3 6 / 1 ma p [bar] pbar p15bar p1bar Q = f ( p; I) Flow rate adjustment characteristic [ 6 ] 1 P74.ai I = 115 / 3 ma Q = f (I; p) Flow rate adjustment characteristic [ 6 ] 1 P76.ai p3bar 8 1 / ma 8 pbar p15bar 6 9 / 18 ma 6 p1bar 4 8 / 16 ma 6 / 1 ma p [bar] P EN-3/8.14 3/6

4 p = f (Q) Pressure drop - Flow rate characteristic [ 1] p[bar] 5 P13.ai I=115/3mA l/min 9 l/min l/min 5 p = f (Q) Pressure drop - Flow rate characteristic [1 ] p[bar] 5 P77.ai I=mA l/min 9 l/min 14 l/min 5 Attention: where there are large pressure differences in the flow direction 1, the main stage poppet will become damaged. t = f (I; p) t [ms] 15 P16.ai Switching time characteristic Opening at p = 1 5 bar t = f (I; p) t [ms] 15 P17.ai Switching time characteristic Closing at p = 1 5 bar I [ma] I [ma] I [ma] I [ma] 4/6 4-P EN-3/8.14

5 5 Dimensions & sectional view 6 Application examples M33x 1 36 M A = 15 [Nm] 1 MVRPSBB RG M 11.3 Ø M A= 1 [Nm] 1 E 89.7 M A = 5 [Nm] Installation information Important: When fitting the cartridges, note the mounting attitude (preferably vertical, with coil down automatic air bleed) and use the specified tightening torque. For the initial start-up, we recommend using the air-bleed screw (item E) to bleed air from the cartridges. No adjustments are necessary, since the cartridges are set in the factory. ATTENTION! Only qualified personnel with mechanical skills may carry out any maintenance work. Generally, the only work that should ever be undertaken is to check, and possibly replace, the seals. When changing seals, oil or grease the new seals thoroughly before fitting them. Seal kit NBR no. DS-377-N 1) Item Qty. Description 1 1 O-ring no x.6 N9 1 O-ring no x.6 N9 3 1 O-ring no x.6 FKM 4 1 Backup ring.5 x. x 1.4 FI751 IMPORTANT! 1) Seal kit with FKM (Viton) seals, no. DS-377-V 4-P EN-3/8.14 5/6

6 8 Ordering code MV R P S B B - R G _ - 4 D _ M V = throttle valve, two-stage R = proportional-solenoid operated P = cartridge design S = seat-valve design B = pressurised oil enters at A... Q = standard model - see relevant data sheets Z... R = special features - please consult BUCHER R = cavity type ER to ISO G = normally closed 16 = nominal size 16 mm 14 = nominal flow rate 14 l/min at p = 1 bar 9 = nominal flow rate 9 l/min at p = 1 bar 6 = nominal flow rate 6 l/min at p = 1 bar (blank) = NBR (Nitrile) seals (standard) V = FKM (Viton) seals (special seals - please contact BUCHER) = design stage (omit when ordering new units)... = voltage e.g. 4 (4 V) D = current DC (blank) = ISO 44 / DIN mating plug (standard, IP 65) M1 = without mating DIN plug for the following plug-variants, please consult Bucher: I = Junior Timer axial plug connection (IP65) D = Deutsch plug connection DT4-P (IP 67/69K) mating plug not supplied A = AMPSEAL 16 axial (IP 67/69K) 9 Related data sheets Reference (Old no.) Description 4-P-411 (i-3) The form-tool hire programme 4-P-8131 Cavity type ER to ISO P P P-7511 Amplifier unit for proportional valves (1-channel) PBS - 3A Amplifier card for proportional valves (1-channel) SAN-535 Line-mounting body, type GERA (G 3/4 ) info.ch@bucherhydraulics.com 14 by Bucher Hydraulics AG Frutigen, CH-3714 Frutigen All rights reserved. Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual improvement, we reserve the right to amend the product specifications contained in this catalogue. Classification: /6 4-P EN-3/8.14

Prop. 3-Way Pressure-Reducing Cart., Size 5 / SAE 08

Prop. 3-Way Pressure-Reducing Cart., Size 5 / SAE 08 Prop. -Way Pressure-Reducing Cart., Size / SAE 8 Q max = 1 l/min (4 gpm), p max = bar (6 psi) Direct acting, electrically operated 1 Description proportional -way pressure-reducing cartridges are size