Low-Temperature Resistant All-Welded Ball Valve Lcb/Lcc DN40-DN100 Pn25-Pn63 - Reliable for LNG Systems

• Customization: Available
• Media: Oil
• Material: Stainless Steel
• Connection Form: Welding
• Driving Mode: Manual
• Nominal Pressure: PN1.0-32.0MPa
• Channel: Straight Through Type
• Structure: Floating Ball Valve
• Type: Floating Ball Valve
• Function: Gas,Oil,Water,Chemical,Steam
• Temperature: High Temperature
• Standard: En593 BS5155 En1092 ISO5211
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Product Name: All-Welded Ball Valve
• Transport Package: Wooden Case
• Specification: customized
• Trademark: Yoonad
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year
• Package Size: 120.00cm * 80.00cm * 80.00cm
• Package Gross Weight: 60.000kg

Product Description

Product Description

The fully welded ball valve is a high-integrity fluid control component engineered for critical piping systems requiring exceptional reliability and leak-tight performance. Designed with a one-piece fully welded body structure (eliminating flange connections), it eliminates potential leakage points, ensuring superior sealing integrity even under high pressure, high temperature, or harsh operating conditions.

Constructed from premium materials such as 304/316 stainless steel, carbon steel, or alloy steel, the valve offers excellent corrosion resistance, wear resistance, and structural stability, adapting to media including oil, gas, water, chemicals, and steam. Its precision-machined floating or trunnion ball, paired with high-performance sealing materials (PTFE, metal-to-metal seals), achieves tight shut-off and long-term sealing reliability, complying with industry standards like 6D, ISO 17292, and GB/T 12224.

The fully welded design enhances structural rigidity, enabling the valve to withstand extreme pressure fluctuations, vibration,and external impacts without deformation. It features low flow resistance and bidirectional flow capability, ensuring efficient media transfer while minimizing energy loss. Suitable for buried installations or confined spaces due to its compact footprint, the valve requires minimal maintenance thanks to its robust construction, reducing operational downtime and lifecycle costs.

Equipped with manual, pneumatic, or electric actuators, it supports remote control and automatic regulation, meeting the demands of industrial automation. Widely used in oil and gas transmission, petrochemical plants, water treatment systems, power generation, and other critical infrastructure, the fully welded ball valve delivers consistent performance, safety, and durability for long-term service in mission-critical applications.

Product Model	DN	(mm)				(kg)
		L	D1	D2	H
J61H-200 J61Y-200 J961H-200 J961Y-200	20	170	22	42	480	38
	25	170	27	42	520	41
	32	200	34	52	728	58
	50	350	53	76	728	89
	80	500	86	108	798	135
	100	600	107	161	890	190
J61Y-250 J61Y-320 J961H-250 J961Y-320	20	150	25	40	576	47
	25	170	27	42	585	49
	32	180	32	55	606	52
	50	250	50	83	722	73
	80	470	80	105	895	225
	100	600	100	142	1179	296
						mm
Type	DN	(mm)Mainexternalandconnectingdimensions				(kg)
		L	D1	D2	H
J61Y-P54100V J61Y-Ps4100V J961Y-Ps4100V J961Y-Ps4100V	20	170	22	42	480	38
	25	170	27	42	520	41
	32	200	34	52	728	58
	50	350	53	76	728	89
	80	500	86	108	798	135
	100	600	107	161	890	190
J61Y-Ps4170V J61Y-Ps4195V J961Y-Ps4170V J961Y-Ps4195V	20	150	25	40	576	47
	25	170	27	42	585	49
	32	180	32	55	606	52
	50	250	50	83	722	73
	80	470	80	105	895	225
	100	600	100	142	1179	296

How does valve work?

The valve plate of the high-temperature sanitary ball valve and the sealing surface of the valve seat are oblique conical structures with temperature and corrosion-resistance alloy material welded on the inclined cone surface of the valve plate. These specialized alloys allow the valve plate and seat to withstand routine wear and tear caused by corrosive chemicals and abrasive mediums.

The spring fixed between regulating ring pressure plates is assembled together with the regulating bolt on the pressure plate.

This structure effectively compensates for the tolerance zone between the sleeve and the valve body as well as the valve stem's elastic deformation from the system's high pressure. These components solve the valve's sealing problem in the process of two-way interchangeable medium transportation.

Product Advantages

a. Superior Leak-Tight Integrity: The one-piece fully welded body eliminates flange connections and potential leakage points,ensuring exceptional sealing reliability even under high pressure (Class 150–2500) and extreme operating conditions, compliant with  6D leakage standards.

b. Enhanced Structural Rigidity: Welded construction delivers exceptional mechanical strength and resistance to deformation, vibration, and external impacts, making it suitable for harsh industrial environments and buried pipeline installations.

c. Long-Term Corrosion & Wear Resistance: Crafted from premium materials (304/316 stainless steel, carbon steel, alloy steel) with precision-machined metal-to-metal or PTFE seals, it withstands corrosive media, abrasion, and temperature fluctuations (-20℃~425℃) for prolonged service life.

d. Compact & Space-Saving Design: The integrated welded structure features a streamlined footprint, ideal for confined spaces, underground piping systems, or installations where flange-mounted valves are impractical.

e. Low Maintenance & Operational Efficiency: Robust, seamless construction reduces the need for frequent inspections
or component replacements, minimizing downtime and lifecycle costs while ensuring consistent performance. 

f. Optimal Flow Characteristics: Smooth internal flow path with low flow resistance (optimized Cv value) enables bidirectional, high-efficiency media transfer, reducing energy consumption in oil, gas, and chemical transmission systems.

g. Wide Application Versatility:Compatible with manual, pneumatic, or electric actuators, it adapts to remote control and automation needs, suitable for critical infrastructure like oil/gas pipelines, petrochemical plants, and power generation facilities.

h. Pressure & Temperature Adaptability: Designed to operate stably across a broad range of pressures and temperatures, including cryogenic or high-temperature media, without compromising structural integrity or sealing performance.