600Lb A352 LCB Flanged Gate Valve

CAST VALVE SERIES

 GATE VALVE

 GLOBE VALVE

 CHECK VALVE

 BALL VALVE

 BUTTERFLY VALVE

FORGED VALVE SERIES

 FORGED GATE VALVE

 FORGED GLOBE VALVE

 FORGED CHECK VALVE

INDUSTRIAL STRAINER SERIES

 Y TYPE STRAINER

 BASKET STRAINER

 T TYPE STRAINER

 TEMPORARY STRAINER

 FORGED STRAINER

 STRAINER SCREEN & BASKET

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Low Temperature Carbon Steel Gate Valve - ASTM A352 LCB, 600LB Flanged

We supply ASTM A352 LCB Low Temperature Carbon Steel Gate Valve with flexible wedge and rising stem (OS&Y) design for reliable shut-off in low-temperature and cryogenic pipeline systems. Manufactured in accordance with API 600 and API 6D, this cast steel gate valve features bolted bonnet construction and flanged (RF) end connections. Available in sizes 2″ to 42″ (DN50 to DN1050) with pressure rating ANSI Class 600Lb. Trim options include 13Cr, 304, 316, Hard Faced, and Full Hard Faced. Actuation options include manual handwheel and bevel gear operation. Ideal for low-temperature service, LNG, refrigeration, petrochemical, and oil & gas applications requiring reliable performance in extreme cold conditions.

Low Temperature Cast Steel ASTM A352 LCB Gate Valve Specifications

• Design & Manufacture: ANSI B16.34, API 600, API 6D

• Wedge Type: Flexible Wedge

• Bonnet Type: Bolted Bonnet

• Stem Type: Rising Stem (OS&Y)

• End Connections: Flanged

• Flange Face: Raised Face (RF)

• Body Material: Low Temperature Carbon Steel ASTM A352 LCB

• Trim Materials: 13Cr, 304, 316, Hard Faced, Full Hard Faced

• Drive Type: Manual Handwheel, Bevel Gear

• Size Range: 2″ to 42″ (DN50 to DN1050)

• Pressure Rating: ANSI Class 600Lb

• Special Design: NACE MR 0175

✓ Guaranteed Charpy impact toughness down to -46°C for low-temperature and cryogenic service

ASTM A352 LCB Gate Valve Main Parts and Materials

Part Name	Material
Part Name	Carbon Steel (LCB)	Stainless Steel (CF8 / CF8M)	Alloy Steel (WC6 / WC9)
Body	A352 LCB	A351 CF8 / CF8M	A217 WC6 / WC9
Bonnet	A352 LCB	A351 CF8 / CF8M	A217 WC6 / WC9
Wedge / Disc	LCB + 13Cr / STL	CF8 / CF8M	WC6 / WC9 + 13Cr / STL
Seat	13Cr / STL	SS304 / SS316	13Cr / STL
Stem	A182 F6a / F304 / F316	A182 F304 / F316	A182 F6a / F304 / F316
Bolts / Nuts	A320 L7 / A194 4	A193 B8 / A194 8, B8M / 8M	A193 B7 / A194 2H
Gasket	Graphite / PTFE	Graphite / PTFE	Graphite / PTFE
Packing	Graphite / PTFE	Graphite / PTFE	Graphite / PTFE

Reference: API 600, API 6D, ASTM A352. LCB provides guaranteed impact toughness down to -46°C. Materials may vary by model and pressure rating. Contact us for confirmed material certificate.

LCB 600LB Flanged Gate Valve Dimensions

Class	NPS	DN	L (Face to Face) RF mm
600Lb	2	50	292
	2 1/2	65	330
	3	80	356
	4	100	432
	6	150	559
	8	200	660
	10	250	787
	12	300	838
	14	350	889
	16	400	991
	18	450	1092
	20	500	1194
	24	600	1397
	26	650	1448
	28	700	1549
	30	750	1651
	32	800	1778
	34	850	1930
	36	900	2083
	42	1050	2439

Reference: API 600, API 6D, ANSI B16.10. Dimensions may vary by manufacturer. Contact us for confirmed drawing and quotation.

Typical Applications of ASTM A352 LCB Gate Valve

• LNG receiving terminals and regasification: reliable isolation for liquefied natural gas at low temperatures.

• Gas processing and NGL fractionation: cold service pipeline isolation in natural gas processing plants.

• Cold-climate pipeline valve stations: Arctic and sub-Arctic pipeline installations.

• Cryogenic storage tank isolation: LCB grade suitable for service above -46°C.

• Refrigeration systems: industrial refrigeration and chilled fluid handling.

• Petrochemical and oil & gas: low-temperature process lines requiring reliable shut-off.

FAQ - ASTM A352 LCB Low Temperature Gate Valve

Q1: What is ASTM A352 LCB?

A: ASTM A352 LCB is a cast carbon steel grade engineered for low-temperature pressure service. It provides guaranteed Charpy impact toughness down to -46°C (-50°F), filling the gap between standard ASTM A216 WCB (-29°C) and cryogenic stainless grades. It is the go-to material for cast valve bodies operating in cold climates or handling chilled fluids.

Q2: What is the difference between WCB and LCB?

A: WCB (ASTM A216) is standard carbon steel suitable for service from -29°C to 425°C, with no impact toughness requirement. LCB (ASTM A352) is a low-temperature carbon steel grade with guaranteed Charpy impact toughness down to -46°C. LCB is preferred for LNG, cold-climate pipelines, and refrigeration applications where WCB would become brittle.

Q3: What is the difference between LCB and LCC?

A: Both LCB and LCC are low-temperature carbon steel grades (ASTM A352) with guaranteed impact toughness down to -46°C. LCC offers higher strength (tensile 485-655 MPa vs 450-620 MPa for LCB) for applications requiring greater stress capability. LCB is the standard low-temperature grade, while LCC is selected for higher-pressure or higher-stress low-temperature service.

Q4: What are the pressure rating and size range?

A: This ASTM A352 LCB gate valve is rated ANSI Class 600Lb, with sizes from 2″ to 42″ (DN50 to DN1050). Other pressure ratings and sizes are available on request.

Q5: Why is impact testing important for low-temperature valves?

A: At low temperatures, standard carbon steel can become brittle and fracture without warning. ASTM A352 LCB requires mandatory Charpy V-notch impact testing at -46°C, with average absorbed energy of 20.3 J (15 ft-lbs) minimum. This ensures the material retains adequate toughness and prevents brittle fracture in cold service.

Q6: What actuation options and special designs are available?

A: Actuation options include manual handwheel and bevel gear operation. Special designs include NACE MR 0175 compliance for sour service. Other options are available on request.

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