LM87 Series High Pressure Globe Control Valve

LM87 series are LM8 series high pressure balance single-seat valve products, one of two basic sleeve widespread guidance, pressure balance type high-pressure single-seat valves, with separate sleeve structure, using high-performance metal sealing ring seal, with good dynamic stability under high temperature and high pressure, high control precision, allow the pressure difference is big, the operating force is small, large flow capacity, etc. Suitable for fluid control of harsh working conditions.

Product Description

Pressure Control Valve

A Pressure Control Valve (also known as a Pressure Regulating Valve or Pressure Relief Valve) is a type of valve used to control or maintain a specific pressure level within a system. It is an essential component in various industries and applications where precise pressure control is crucial to ensure safety, efficiency, and proper functioning of the system.

The Pressure Control Valve operates by responding to changes in the system pressure and adjusting its position or opening to maintain the desired pressure within the set range. There are two primary types of Pressure Control Valves:

Pressure Reducing Valve (PRV) or Pressure Regulator:

A Pressure Reducing Valve is used to lower the pressure of the fluid or gas entering the valve to a specified setpoint, regardless of variations in the upstream pressure. It ensures that the downstream pressure remains constant within the predetermined range, providing protection to downstream equipment and maintaining a safe and stable process.

Applications of Pressure Reducing Valves include controlling the pressure of water supply systems, gas distribution networks, pneumatic systems, and various industrial processes.

Pressure Relief Valve (PRV) or Safety Valve:

A Pressure Relief Valve is designed to protect a system or equipment from overpressure situations by automatically opening and discharging excess pressure when the system pressure exceeds a certain limit. Once the pressure returns to the acceptable range, the valve closes to prevent further discharge.

Pressure Relief Valves are commonly used in steam boilers, pressure vessels, pipelines, and other systems where overpressure can pose a risk of damage or safety hazards.

Performance advantages

Modular design concept, combining the American and Japanese schools of high-precision control and the German school of modular concept.

The inner cavity of the valve body is S-shaped distribution, smooth and without dead ends; the valve body has internal guide wings, which can reduce the mutual force of the medium inside the valve body and reduce the occurrence of cavitation.

The use of sleeve guidance, large guide diameter, smooth guidance, with good dynamic stability.

The valve seat adopts floating design, while the sealing surface adopts tapered form to ensure good alignment of the sealing sub.

Sleeve window control flow characteristics, flow characteristics control accurately.

the structure of the inner part is balanced, allowing a large differential pressure, small operating force and large flow capacity.

Equivalent percentage, linear and quick-open flow characteristics are available.

Leakage level to meet in line with GB / T 17213.4-2005 / IEC 60534-4: 1999 Ⅳ level.

and pipeline connections are available in RF, RJ and other flange types and SW, BW welded types.      

Flange distance meets GB/T 17213.3-2005 / IEC 60534-3-1:2000; or ISA S75.03-1992 standard.

LM87 Series High Pressure Globe Control Valve

Key features and benefits of Pressure Control Valves:

Safety: Pressure Control Valves ensure that the system operates within safe pressure limits, preventing potential accidents or catastrophic failures due to excessive pressure.

Efficiency: By maintaining a consistent pressure, these valves optimize the performance of downstream equipment, reducing the risk of equipment damage and downtime.

Flexibility: Pressure Control Valves can be set to specific pressure ranges, making them adaptable to various applications and requirements.

Accuracy: High-quality Pressure Control Valves offer precise pressure control and minimal pressure fluctuations.

Technical parameters

Nominal diameter: DN40/50/80/100/150/200

Pressure class: ANSI CL900/1500/2500; DIN PN160/250

Valve body and upper bonnet material: WCB, WC6, WC9, CF8, CF8M, etc.

Upper bonnet form: standard type (-17℃~+316℃); high temperature type (+316℃~+593℃)

Packing type: flexible graphite ring packing; flexible graphite + nickel wire combination packing, etc.

Flow characteristics: equal percentage (%); linear (L)

Adjustable ratio: 50:1

Allowable leakage: metal seal: ANSI B16.104 Class Ⅳ

Typical performance

Weifang Huawei Thermal Power Co., Ltd, new thermal power plant

Tongling Jiahe Technology Co., Ltd, 70,000 tons/year polyamide slicing project

Hubei Shalongda Co., Ltd, Nongsan Glyphosate Oxygen Oxidation Project

Tianjin Changlu Hangu Salt Farm Co., Ltd, urnford chemical spare parts project


Nominal SizeDN40 ~ DN300
Pressure RatingPN/160/250/CL900(PN150)/1500(PN260)/2500(PN420)
Operateing Temperature-196℃~ 593℃
CharacteristicsEqual percentage, linear, quickly open
Seat Leakage ClassANSI B16.104: IV、V、VI
Body MaterialWCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A etc.
Trim Material630/316/316+ST/316nitriding/316+Ni60/316+WC etc.
Seal MaterialFlexible graphite ring packing, graphite +PTFE braided packing etc.