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

Product Overview

LM8 series sleeve-guided high-pressure control valve is a sleeve-guided, pressure-balanced high-pressure single-seat control valve. It has the characteristics of good dynamic stability at high temperature and pressure, high control accuracy, large allowable differential pressure, small operating force and large flow capacity. Suitable for high pressure harsh working conditions fluid control with high differential pressure. Has hundreds of applications in petrochemical, petroleum, refining, coal chemical, metallurgical and other industries.

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.

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


TECHNICAL PARAMETERS

Nominal SizeDN40 ~ DN300
Pressure RatingPN/160/250/CL900(PN150)/1500(PN260)/2500(PN420)
Operateing Temperature-196℃~ 593℃
CharacteristicsEqual percentage, linear, quickly open
Rangeability50:1
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.