Polyhydron Pvt. Ltd.
Piston Pumps, Hand Pumps, Relief Valves etc.
Polyhydron has a multiple range of products as like piston pumps, hand pumps, pressure relief valves, pilot operated pressure relief valves, modular type check valves, flow control valves, directional control valves, pressure switches etc.
Hand pumps
These hand operated pumps consists of single piston reciprocating in body, relief valve & release valve.
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Flow capacity c.c./stroke | Oil tank capacity (ltrs.) |
---|---|---|---|
HP12 | 700 | 2.8 | 1.2 |
HP16 | 350 | 5 |
Automatic change-over from high discharge at low pressure to low discharge at high pressure. Renewable internal parts by replacement. Collapsible Hand lever for compact size and short hand movement
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Flow capacity upto 30 bar c.c./stroke | Flow capacity above 30 bar c.c./stroke | Oil tank capacity (ltrs.) |
---|---|---|---|---|
HP5012 | 700 | 49 | 2.8 | 13 |
HP5016 | 350 | 49 | 5 |
Piston pumps
Model : 1R & 1RC
These pumps are radial plunger, fixed displacement, high pressure pumps. the models available are open execution type oil immersed (1R &1RE) Where ‘E’ stands for pumps with extension shaft and closed execution casing type of pump.1RC & 1RCE type which can be mounted above oil level.
Nominal pressure and flow ratings
Pr. bar | 550 | 450 | 350 | 300 | 250 | 200 |
---|---|---|---|---|---|---|
No. of Pumping Elements | Flow (l / min) @ 1450 rpm | |||||
A | B | C | D | E | F | |
3 | 1.5 | 2.5 | 3.7 | 4.3 | 5 | 5.8 |
5 | 2.6 | 4.2 | 6.2 | 7.2 | 8.4 | 9.7 |
7 | 3.7 | 5.8 | 8.6 | 10 | 11.7 | 13.6 |
Open type ‘1R’ with 5 elements
Open type ‘1R3’ with 3 elements
Closed type ‘1RC’ with 5
Model 2R & 2RC
Identical to radial piston pump (1R), these pump has two independent pumping sections. Flow can be combined or used independently to feed two circuits. Also available with extension shafts (model 2RE & 2RCE) to couple low pressure pumps. The nominal pressure and flow rating for these are similar to that of ‘1R & 1RC’models.
Open type ‘2R’ with total 10 nos. elements
Close type ‘2RC’ with total 14 nos. elements
Model 11R & 11RC
These radial piston pumps are with 5 or 7 pumping elements and possess higher delivery flow outputs compared to (1R & 2R) series. These are available in open type, closed type and also with extension shafts.
Open type ‘11R’ with total 10 nos. elements
Close type ‘11RC’ with total 10 nos. elements
Nominal pressure and flow ratings
Pr. bar | 400 | 315 | 250 | |||
---|---|---|---|---|---|---|
No. of Pumping Elements | Flow (l / min) @ 1450 rpm | |||||
A | B | C | ||||
5 | 10.6 | 13.8 | 17.5 | |||
7 | 14.8 | 19.5 | 24.5 |
Model 12R & 12RC
These are radial piston pumps, with 5 or 7 pumping elements, each pump sections with two rows. These are available also with extension shafts.
Open type ‘12R’ with total 14 nos. elements
Close type ‘12RC’ with total 14 nos. elements
Pressure Controls
Direct operated pressure relief valves (DPR)
Direct acting with guided cushioned poppet. Available in cartridges(K), threaded(T) & subplate(S) types. Two options for pressure adjustments are available with set screw and with hand knob.
Nominal pressure and flow ratings
Model | Max. working pr. (bar) | Max. flow in l / min |
---|---|---|
DPR 06 | 700 | 30 |
DPR 10 | 400 | 80 |
DPR 20 | 400 | 160 |
Pilot operated pressure relief valves (PPR 06K)
Two stage spool type relief valve cartridges. Four pressure ranges adjustable upto 50,100,200,315
Nominal flow and pressure ratings
Max. flow handling capacity | 30 l/min. |
Max. setting pressure | 315 bar |
Max. working pressure | 315 bar |
Pilot operated pressure relief valves modular construction (MPPR 06)
Pilot operated pressure relief valve modular construction for vertical stacking assemblies. Four models available
Nominal flow and pressure ratings
Max. flow handling capacity | 30 l/min. |
Max. setting pressure | 315 bar |
Max. working pressure | 315 bar |
Pilot operated pressure relief cum unloading valves (PPRU)
Two stage puppet type relief cum unloading valve. Additional solenoid unloading facility as an optional feature.
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Max. flow (l/min) |
---|---|---|
PPR 10 | 315 | 100 |
PPR 20 | 315 | 200 |
PPR 30 | 315 | 400 |
Pilot operated pressure reducing valves (PPM)
Two stage pilot operated construction. These valves are normally open type valves. When the pressure in the secondary port (port A) increases to set pressure, the valve closes against the spring
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Max. flow (l/min) |
---|---|---|
PPM 10 | 315 | 80 |
PPM 20 | 315 | 200 |
PPM 30 | 315 | 400 |
Pressure control module (PCM 06-06)
Designed to control double pumps of a Hi-low systems. Consists of a high pressure relief valves, a check valve and a low pressure unloading valve. Unloading of pumps by solenoid valve / Valves as an optional feature.
Nominal flow and pressure ratings
Model | Max. pr. for High pr. relief (bar) | High pr. Flow (l/min) | Max. pr. For unloading (bar) | Low pr. Flow (l/min) |
---|---|---|---|---|
PCM 06-06 | 400 | 25 | 50 | 25 |
Pressure control modules (PCM 20-06 / PCM 20-10 and PCM 20-16)
Designed to control double pumps of a Hi-low systems. Consists of a high pressure relief valves, a check valve and a low pressure unloading valve.
Nominal flow and pressure ratings
Model | Max. pr. for High pr. relief (bar) | High pr. Flow (l/min) | Max. pr. For unloading (bar) | Low pr. Flow (l/min) |
---|---|---|---|---|
PCM 20-06 | 315 | 25 | 100 | 160 |
PCM 20-10 | 315 | 60 | 100 | 160 |
PCM 20-16 | 315 | 100 | 100 | 160 |
Counter balance valve (CB)
Counter balance valves are seat types valves. They offer free flow from port B to A and give leak free closure in opposite direction upto a predetermined pressure. The predetermined pressure can be adjusted with its maximum specified range.
Nominal flow and pressure ratings
Model | CB10 | CB20 |
---|---|---|
Max. flow handling capacity | 30 l/min. | 115 l/min. |
Max. setting pressure | 200 bar | 200 bar |
Max. working pressure | 315 bar | 315 bar |
Directional control valves
Lever operated directional control valves (DL 06)
Five chamber design for better reduction in dynamic forces & longer valve life. Available as spring centered, spring off-set or detented model.
Nominal flow and pressure ratings
Max. working pr. (bar) | Max. flow l/min. |
---|---|
Port P, A & B …..... 315 | 60 |
Port T ................ 150 |
Lever operated directional control valves (4DL 10)
Completely encapsulated control mechanism for protection against dirt. Wide variety of spools available both in subplate & threaded model.
Nominal flow and pressure ratings
Max. working pr. (bar) | Max. flow l/min. |
---|---|
Port P, A & B …..... 315 | 100 |
Port T ................ 100 |
Lever operated directional control valves (4DL 20)
Completely encapsulated control mechanism for protection against dirt. Wide variety of spools available both in subplate model.
Nominal flow and pressure ratings
Max. working pr. (bar) | Max. flow l/min. |
---|---|
Port P, A & B …..... 315 | 300 |
Port T (with internal drain) .. 100 | |
Port T (with external drain).. 250 |
Solenoid operated directional control valves (DE 06 CETOP 03)
Direct solenoid operated, spool type, mounting on ISO 4401-03-02. Five chamber body and spool design provides low-pressure drop, with maximum performance. Balanced spool design ensures proper shifting force for maximum reliability and long life.
Solenoid pilot operated directional control valve (DEP 20)
Completely encapsulated control mechanism for protection against dirt. Available as spring centered, spring offset. Minimum pilot pressure is 5 bar.
Nominal flow and pressure ratings
Max. working pr. (bar) | Max. flow l/min. |
---|---|
Port P, A, B and X ............... 350 | 300 |
Port T (with internal drain) ... 160 | |
Port T (with external drain) .. 250 | |
Port Y ............................... 160 |
Flow control valves
2 – way flow control valve (2PF)
Pressure compensated. Check valve option for reverse-free flow. Four rotations of hand knob to facilitate the setting with ease. Stroke limiter available as an option.
Max. working pr. | 315 bar |
Flow controlling capacity | Min. 0.25 to 4, 8, 16 or 32 l/min. |
Flow divider valve (FD)
Flow divider valves provide dual flow from a single source at a predetermined ratio, regardless of load. Maximum dividing error is <5%, Threaded port body.
Inlet Flow | 5 -10 | 10 -18 | 15 -30 | 30 -100 |
Max. Pr. (bar) | 315 | |||
Dividing Ratio (%) | 50 : 50 |
Flow Control valve (TCM 06 & TCM 10)
Double throttle cum check, non – pressure compensated modular construction. Can be used in Metering-in or Metering out device.
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Max. flow l/min. |
---|---|---|
TCM 06 | 315 | 35 |
TCM 10 | 315 | 100 |
Check valves (C)
These seat type valves allow free flow from port A to port B and give leak-proof closure in opposite direction. Available as inline mounting or Sub-plate mounting
Pilot operated check valves (CI / CL)
Seat type valves, Model CI with internal drain & CL with external drain. Threaded or Sub-plate mounting construction. Available with two pilot piston size options only for Model CI.
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Max. flow l/min. |
---|---|---|
CI10 / CL10 | 315 | 80 |
CI20 / CL20 | 315 | 160 |
CI30 / CL30 | 315 | 350 |
Check valve modular construction (CIM 06 / CIM 10)
These modular valves are available with the pilot operated check valves facility on either A or B or both A and B ports. The hydraulic opening operation for free flow in reverse direction is achieved by means of internal pilot pressure available from the other working port.
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Max. flow l/min. |
---|---|---|
CIM 06 | 315 | 35 |
CIM 10 | 315 | 80 |
CI30 / CL30 | 315 | 350 |
Prefill valves (PV)
Intended for prefilling and exhausting of large hydraulic cylinders. Can be used as anticavitation check valves. Decompression feature is optional up to size 80.
Nominal flow and pressure ratings
Model | Max. working pr. (bar) | Max. flow l/min. | |
Prefilling | Exhausting | ||
PV 40 | 315 | 152 | 304 |
PV 50 | 315 | 236 | 472 |
PV 63 | 315 | 372 | 744 |
PV 80 | 315 | 608 | 1216 |
PV 100 | 315 | 940 | 1880 |
PV 125 | 315 | 1480 | 2960 |
PV 150 | 315 | 2120 | 4240 |
PV 200 | 315 | 3800 | 7600 |
Pressure Switches (1PS10 / 1PS / 1PT / 1PF)
Sealed piston type with non – adjustable pr. Differential. Encapsulated design for protection against dirt. Mounting style : subplate , face and threaded mountings. Transparent plug-in connector is available with LED. Four pressure ranges available adjustable upto 10, 50, 100, 200, 350 and 420 bar.
Nominal flow and pressure ratings
Model | Increasing Pr. | Decreasing Pr. | Operating Pr. | ||
Min. | Min. | Max. | Max. | Max. | |
1P * 10 | 4 | 4 | 2.5 | 7 | 100 |
1P * 50 | 8 | 8 | 5 | 44 | 420 |
1P * 100 | 14 | 14 | 10 | 90 | 420 |
1P * 200 | 20 | 20 | 15 | 185 | 420 |
1P * 350 | 25 | 25 | 20 | 330 | 420 |
1P * 420 | 28 | 28 | 22 | 390 | 420 |