Table of Contents

HYDRAULIC PRESSURE CONTROL VALVE

Hydraulic pressure control valves are critical components in hydraulic systems, essential for regulating and maintaining desired pressure levels to ensure safe and efficient operation. These valves come in various types, including relief valves, pressure reducing valves, sequence valves, and unloading valves, each serving specific functions. Relief valves protect the system from excessive pressure by diverting fluid when pressure exceeds a set limit, preventing potential damage. Pressure reducing valves maintain a constant downstream pressure, regardless of fluctuations in upstream pressure, optimizing performance in applications requiring precise pressure control. Sequence valves manage the sequence of operations in a hydraulic circuit by allowing fluid flow only after a set pressure is reached, ensuring coordinated functioning of multiple actuators. Unloading valves divert fluid to a reservoir when a certain pressure is achieved, reducing pump load and conserving energy. Made from robust materials like steel or brass, these valves are designed to withstand harsh operating conditions and high pressures. The precise control offered by hydraulic pressure control valves enhances system reliability, minimizes wear and tear on components, and improves overall system efficiency. Their role is indispensable in industries such as manufacturing, construction, automotive, and aerospace, where precise pressure management is crucial for operational safety and performance.

Direct Operated Pressure Relief Valve - DPR
Direct Operated Pressure reducing Valve - DPM
Direct Operated Pressure sequence Valve - DPS 06
Pilot Operated Pressure Relief Valves (Cartridge Type) - PPR 06K
Pilot Operated Pressure Reducing Valves (Cartridge Type) - PPM 06K
Pilot Operated Pressure Relief Valve (Modular Construction) - MPPR 06
Pilot Operated Pressure REDUCING Valve (Modular Construction) - MPPM 06
Pilot Operated Pressure Relief Valves - PPR
Pilot Operated Pressure Relief cum Unloading Valve - PPRU

Pilot Operated Pressure reducing Valve - PPM
Pressure Control Modules - PCM 06-06
Pressure Control Modules - PCM 20
Pressure Control Modules - PCM 20-16
Counter Balance Valve - CB
Counter Balance Valve - CB Design series 30
Duel Counter Balance Valve - 2CB06T03
Direct Operated Pressure control Valve - DPC

Direct Operated Pressure Relief Valve - DPR
Direct Operated Pressure reducing Valve - DPM
Direct Operated Pressure sequence Valve - DPS 06
Pilot Operated Pressure Relief Valves (Cartridge Type) - PPR 06K
Pilot Operated Pressure Reducing Valves (Cartridge Type) - PPM 06K
Pilot Operated Pressure Relief Valve (Modular Construction) - MPPR 06
Pilot Operated Pressure REDUCING Valve (Modular Construction) - MPPM 06
Pilot Operated Pressure Relief Valves - PPR
Pilot Operated Pressure Relief cum Unloading Valve - PPRU

Pilot Operated Pressure reducing Valve - PPM
Pressure Control Modules - PCM 06-06
Pressure Control Modules - PCM 20
Pressure Control Modules - PCM 20-16
Counter Balance Valve - CB
Counter Balance Valve - CB Design series 30
Duel Counter Balance Valve - 2CB06T03
Direct Operated Pressure control Valve - DPC

Working of Hydraulic Pressure Control Valves

Hydraulic pressure control valves are an important component of hydraulic systems that help regulate and control the pressure of hydraulic fluid. They play a vital role in ensuring that the hydraulic system operates effectively and safely.

Hydraulic pressure control valves work by regulating the flow of hydraulic fluid through the system. The valve has an adjustable spring-loaded pressure relief valve that opens when the system pressure exceeds the valve’s set pressure. As the pressure relief valve opens, it diverts the excess fluid flow to the tank, thus preventing damage to the system and its components due to overpressure.

Functions of Hydraulic Pressure Control Valves

Pressure Regulation

One of the primary functions of hydraulic pressure control valves is to regulate the pressure of hydraulic fluid in the system. This helps ensure that the system operates within safe pressure limits and prevents damage to system components.

Overpressure Protection

Hydraulic pressure control valves protect the system from overpressure conditions by diverting excess fluid flow to the tank. This helps prevent damage to the system components and ensures the safety of the system and its operators.

Flow Rate Control

Some hydraulic pressure control valves can also control the flow rate of hydraulic fluid by adjusting the valve’s orifice size. This helps regulate the speed of actuators such as hydraulic cylinders and motors

Circuit Isolation

Some hydraulic pressure control valves can isolate different sections of the hydraulic circuit to control the pressure in each section independently. This is particularly useful in complex hydraulic systems where different sections may require different pressure levels

Energy Conservation

Hydraulic pressure control valves can also help conserve energy by reducing the pressure in the system when it is not required. This can be achieved through the use of pressure-reducing valves that reduce the pressure of the hydraulic fluid when the system demand is low. Overall, hydraulic pressure control valves play an essential role in ensuring the safe and effective operation of hydraulic systems. They provide reliable pressure regulation, protect the system from overpressure conditions, control flow rates, isolate different sections of the circuit, and help conserve energy

Applications of Hydraulic Pressure Control Valve

Hydraulic pressure control valves have a wide range of applications in various industries, including:

Industrial Machinery: Hydraulic pressure control valves are commonly used in industrial machinery, such as presses, machine tools, and injection molding machines. They are used to control the speed and force of hydraulic actuators in these machines, which ensures accurate and consistent operation.

Construction Equipment: Hydraulic pressure control valves are also used in construction equipment, such as excavators, bulldozers, and cranes. They are used to control the movement and force of hydraulic cylinders in these machines, which allows for precise operation and increased efficiency.

Aerospace and Defense: Hydraulic pressure control valves are used in aerospace and defense applications, such as aircraft landing gear, missile systems, and hydraulic actuators in aircraft control systems. The valves ensure precise control of hydraulic pressure, which is critical for the safety and performance of these systems.

Automotive Industry: Hydraulic pressure control valves are widely used in the automotive industry, particularly in the braking systems of vehicles. The valves regulate the pressure of the brake fluid, which controls the braking force applied to the wheels. They are also used in suspension systems, power steering systems, and transmission systems.

Oil and Gas Industry: Hydraulic pressure control valves are used in the oil and gas industry for controlling the pressure of hydraulic fluid in drilling and production equipment. The valves help to maintain the pressure within a safe and efficient range, which is crucial for the successful operation of the equipment.

Marine Industry: Hydraulic pressure control valves are also used in the marine industry for various applications, such as controlling the steering system, stabilizers, and deck machinery. They ensure precise and reliable operation of these systems, even in harsh marine environments.

Medical Industry: Hydraulic pressure control valves are used in the medical industry for various applications, such as controlling the pressure of hydraulic fluid in medical equipment, such as surgical tables, patient lifts, and medical imaging systems. The valves help to ensure accurate and safe operation of these systems, which is critical for patient safety and well-being.

In summary, hydraulic pressure control valves are essential components in various industries, including industrial machinery, construction equipment, aerospace and defense, automotive industry, oil and gas industry, marine industry, and medical industry. They play a critical role in maintaining the proper pressure levels within hydraulic systems, which is essential for ensuring efficient and safe operation of the equipment and systems.

Direct Operated Pressure Relief Valve – DPR

Direct acting with guided cushioned poppet. Available in Cartridge, Threaded and Subplate types.

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

Direct Operated Pressure reducing Valve – DPM

Direct acting construction with built-in pressure relief for secondary port.By-pass Check Valve optional.

Nominal flow and pressure ratings
Max. flow handling capacity	20 l/min.
Max. setting pressure	200 bar
Max. working pressure	315 bar

Direct Operated Pressure sequence Valve – DPS 06

Direct acting spool type pressure sequence valve. Models available :
Internal pilot, internal drain.
External pilot, internal drain.
Internal pilot, external drain.
External pilot, external drain.
Port A normally connected to port T : control at port P port A normally connected to port T : control at port B Four pressure ratings 25, 50, 100, or 200 bar.For reverse free flow, optional check valve can be supplied as a stackable module. Pressure adjustment by screw or hand knob.

Nominal flow and pressure ratings
Max. flow handling capacity	25 l/min.
Max. setting pressure	200 bar
Max. working pressure	315 bar

Pilot Operated Pressure Relief Valves (Cartridge Type) – PPR 06K

Two stage Spool type Relief / Reducing Valve Cartridge Low pressure override due to larger flow area.

Two options for pressure adjustment,
– With set screw and lock nut.
– With hand knob and lock nut.

Internal drain valves can be converted to external drain.

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 Reducing Valves (Cartridge Type) – PPM 06K

Two stage Spool type Relief / Reducing Valve Cartridge Low pressure override due to larger flow area.

Two options for pressure adjustment,
– With set screw and lock nut.
– With hand knob and lock nut.

Nominal flow and pressure ratings
Max. flow handling capacity	30 l/min.
Max. setting pressure	200 bar
Max. working pressure	315 bar

Hydraulic Pressure Relief Valves

Pilot Operated Pressure Relief Valve (Modular Construction) - MPPR 06

Pilot Operated Pressure REDUCING Valve (Modular Construction) - MPPM 06

Pilot Operated Pressure Relief Valves - PPR

Pilot operated seat type valve. High flow handling capacity, low pressure override, remote controllability and solenoid unloading possibility are the main features of these valves. Bodies available with threaded ports or sub-plate mounting style.

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 Relief cum Unloading Valve - PPRU

Two stage poppet type Relief cum unloading valve. Additional solenoid unloading facility as an optional feature. Three standard sizes – 10, 20, & 30.

Operating Pressure	For port ‘A’, ‘X’ and ‘P’ — 315 bar For port ‘B’ —– 60 bar
Max. flow handling capacity	For Valve Size 10 ——– 100 l/min. 20 ——– 200 l/min. 30 ——– 400 l/min.

Pilot Operated Pressure reducing Valve - PPM

Two stage pilot operated construction. These valves are normally open type valves. When the pressure in the secondary port ( port B ) increases to set pressure, the valve closes against the spring.

Size	Max. Working Pr.(Inlet)	Reduced Pr.	Max. flow (l/min)
PPM10	315	adjustable upto 5 to 315	80
PPM20			200
PPM30			300

Pressure Control Modules - PCM 06-06

Designed to control double pumps of a Hi-Low system. Unloads low pressure pump when system pressure rises above the pressure set on unloader valve. Relieves high pressure pump when system pressure reaches the value.

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

Designed to control Double pumps of a Hi-Low system. Consists of a High pressure relief valve, 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)
PCM20-06	315	25	100	160
PCM20-10	315	60	100	160

Pressure Control Modules - PCM 20-16

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)
PCM20-16	315	100	100	160

Counter Balance Valve - CB

Counter balance valves are seat type valves. They offer free-flow from their port B to A and give leak free closure in opposite direction upto a predetermined pressure. This predetermined cracking pressure can be adjusted within its maximum specified range.

	CBS10T	CBS20T
Flow handling capacity	30 lpm	115 lpm

Counter Balance Valve - CB Design series 30

Flow handling capacity	200 lpm
Max. Set Pressure	50 bar
Operating pressure	315 bar

Duel Counter Balance Valve - 2CB06T03

Duel counter balance valves 2CB06T03 are seat type valves. They offer free flow from their port V1 to Port C1 and give leak free closure inopposite direction upto a predetermined cracking pressure. The predetermined cracking pressure can be adjusted within its maximum specified range.

Direct Operated Pressure control Valve - DPC

Hydraulically cushioned valves, used to control sequencing, relieving, unloading or counter-balancing operations.

Nominal flow and pressure ratings
Max. flow handling capacity	160 l/min
Max. setting pressure	160 bar
Max. working pressure	350 bar