High Performance Butterfly Valve

Trusted High Performance Butterfly Valve Manufacturer

NTVAL provides High Performance Butterfly Valves, ideal for large-scale projects. Designed for durability and efficient flow control, these valves offer easy installation and low maintenance, saving time and resources. Trust NTVAL for reliable quality and performance.

Reliable High Performance Butterfly Valve

Quality Control

The PMI test confirms that the high-performance butterfly valve’s materials match design requirements, maintaining quality in demanding applications.

PMI Test

The low emission test measures any potential leaks, reducing the risk of releasing harmful gases or fluids into the surroundings.

Sealing Test

The low emission test measures any potential leaks, reducing the risk of releasing harmful gases or fluids into the surroundings.

Low Emission Test

The impact test assesses the valve’s toughness, confirming it can withstand sudden forces without damage in heavy-duty environments.

Impact Test

The dimension inspection verifies all measurements to verify each part fits accurately, supporting smooth operation and long-term durability.

Dimension Inspection

The painting thickness test checks the coating’s depth, offering protection from corrosion and helping the valve endure harsh conditions.

Painting Thickness Test

PT, or penetrant testing, detects small cracks or flaws on the valve’s surface, identifying areas that may need additional repair.

PT

The material inspection reviews the raw materials’ strength and quality, verifying they can handle high pressure and temperature conditions.

Material Inspection

Our Valve Applications in Key Industries

Discover how our advanced valve solutions improve flow control, delivering enhanced efficiency, safety, and strict quality assurance.

High-performance butterfly valves resist corrosive chemicals and control fluid flow with accuracy, making them essential in chemical processing operations.

Chemical Processing

In the petrochemical industry, these valves manage the flow of oil and gas effectively, performing well under high pressure and extreme temperatures.

Petrol Chemical

High-performance butterfly valves withstand intense temperatures and radiation, providing reliable service in nuclear and power generation facilities.

O.P.G & Nuclear

These valves handle abrasive materials like slurry with ease, supporting smooth and efficient flow control in the pulp industry.

Pulp

In mining, high-performance butterfly valves resist abrasive materials and operate effectively in harsh environments, providing dependable flow control.

Mining

High-performance butterfly valves offer reliable operation for handling large fluid volumes, making them ideal for water and sewage systems.

Water & Sewage

These valves manage steam flow with precision, aiding in pressure and temperature control across expansive steam distribution networks.

Steam System

In boiling systems, high-performance butterfly valves control the flow of steam and hot water, helping maintain stable and efficient operation.

Boiling System

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Components of A High-Performance Butterfly Valve

Valve body

The valve body houses the internal parts and is designed to be stronger than other components. This strength helps it support the weight of the valve and protects it from damage due to impacts. The body also withstands the pressure of the fluids passing through the valve. Common materials used for the body include nickel alloy, stainless steel, ductile iron, and carbon steel.

Stem

The stem is a metal piece that connects the handle or actuator to the valve disc. When the handle is turned, the stem rotates, transmitting the torque to the disc, allowing the valve to open or close.

Hand wheel/actuator

The handwheel is used in manually operated valves, while the actuator is used in automatic ones. This component provides the necessary power to open or close the valve, with the handle connected to the disc via the stem.

Disc

The disc controls the flow of fluid by either allowing it through or blocking it. It receives its movement power from the handwheel or actuator.

Seat

The seat is located inside the valve body and provides a surface where the disc rests when the valve is closed, preventing fluid leakage. The material of the seat is crucial as it determines the valve’s compatibility with different temperatures and types of media.

Gasket

The gasket is a seal placed between the valve and pipe mating surfaces to prevent fluid leaks. It stays in place due to the high pressure from the valve’s bolts and nuts.

Packing

Packing is a seal located between the stem and the body to stop fluid from leaking along the stem.

How Does a High-Performance Butterfly Valve Work?

Types of High-Performance Butterfly Valves

This valve features two flanged ends, located at the inlet and outlet sides. The flanged ends, which have holes, connect to a pipe with matching flanges. Designed for high-pressure applications, this valve offers a tight seal, reducing the risk of fluid leakage. However, it is heavier than other types due to the additional bolts, nuts, and flanged ends.

This valve is manually operated using a handwheel connected to a gear system within a gearbox. The gear system changes the torque direction, making it easier to open and close the valve. Although manual valves are more affordable, they can cause operator fatigue, especially when high torque or frequent operation is required.

Double Flanged High-Performance Butterfly Valve

Manual High-Performance Butterfly Valve

Applications of High-Performance Butterfly Valves

Municipal Water Supply and Treatment: These valves are commonly used in municipal water supply systems and water treatment plants.
Mining Operations: They play a role in mining operations, helping to control fluid flow in various processes.
Food and Beverage Processing: In the food and beverage industry, high-performance butterfly valves are favored because they are easy to clean and resistant to clogging.
Steam Power Plants: Steam power plants use these valves to manage the flow of steam and water effectively.
Chemical Manufacturing: They are essential in chemical manufacturing, providing precise control over various processes.
Paper and Pulp Industry: The paper and pulp industry relies on these valves for efficient operation.
Petroleum Refining: Refineries use high-performance butterfly valves in the processing of petroleum products.
Fire-Fighting Systems: These valves are important in fire-fighting systems, where they help regulate water flow.

Disadvantages of High-Performance Butterfly Valves

Higher Cost: These valves are more expensive compared to other types of butterfly valves.
Reduced Fluid Pressure: When opened, the valve disc remains in the fluid flow path, which can lower the fluid pressure.
Limited Throttling Use: High-performance butterfly valves are best suited for throttling only when the fluid pressure drop is low.
Less Effective Sealing: The sealing of these valves is not as effective as that of other valves, like ball valves.

Troubleshooting High-Performance Butterfly Valves

Fluid Leakage at the Valve-Pipe Connection

Loose Bolts and Nuts: Tighten the bolts and nuts to the torque level recommended by the manufacturer.
Damaged or Worn-Out Gasket: Replace the gasket to stop the leakage.

Fluid Leakage Through the Stem

Worn-Out or Damaged Gland Packing: Replace the gland packing to prevent leakage.
Worn-Out O-Rings: Replace the O-rings if they are damaged or worn out.

Internal Fluid Leakage

Worn-Out Seats: Replace the seats to stop internal leakage.
Worn-Out O-Rings: Replace the O-rings.
Dirt in the Valve: Open the valve and clean out any dirt or debris.

Valve is Hard to Operate

Foreign Materials in the Valve: Open the valve, remove any foreign materials, and clean all internal components.
Corrosion in the Valve: Open the valve and clean off any corrosion that may be causing difficulty in operation.

Seat Design Principles - High Performance

Standard Material List - High Performance

Dimensions

High-Performance Butterfly Valve

Material: Cast Steel
End Connections: Double Flanged Ends with Metal Seating
Design Standard: Complies with ASME B16.34

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Additional General Insights Here

Specs of High Performance Butterfly Valve

Material Composition

High-performance butterfly valves typically use stainless steel for the disc, providing excellent corrosion resistance, while the body is often made of durable carbon steel. The seals are crafted from resilient materials like PTFE, creating a tight, leak-proof seal— No wonder these valves are highly reliable in demanding environments.

Temperature

These valves are engineered to operate efficiently in environments with temperatures as high as 400°C. This makes them suitable for applications where high heat is a critical factor. Their design allows for reliable performance even under extreme temperature conditions.

Pressure Rating

The NTVAL High Performance Butterfly Valve is rated for pressures up to 1440 PSI. This high pressure rating allows the valve to handle demanding industrial environments safely. It operates effectively under these conditions, providing reliable performance. Adherence to these pressure standards offers peace of mind for any large-scale project.

Features of High Performance Butterfly Valve

Light Weight

The High Performance Butterfly Valve is designed to be lightweight, making it easier to handle and install. Its lighter weight reduces the overall load on the piping system, improving operational efficiency. Think about that for a minute – this feature also simplifies transportation and installation, saving time and effort on large-scale projects.

Easy Operation

The High Performance Butterfly Valve offers easy operation with a simple lever or gear mechanism. This user-friendly design allows for quick and efficient opening and closing of the valve. The smooth operation minimizes effort and reduces the risk of operator fatigue. This ease of use is particularly beneficial in large projects where efficiency is crucial.

Adjustable Packing Gland

The High Performance Butterfly Valve features an adjustable packing gland, allowing easy adjustments to maintain a tight seal. This helps prevent leaks and extends the valve's lifespan. The adjustable packing gland keeps the valve performing optimally, even under varying pressure conditions, making it more reliable and reducing maintenance needs.

Benefits of High Performance Butterfly Valve

Enhanced Efficiency

The NTVAL High Performance Butterfly Valve enhances system efficiency by providing precise flow control. Its advanced design minimizes energy loss, leading to cost savings. By optimizing fluid dynamics, the valve supports better overall performance in various industrial applications.

Reduced Installation Time

The High Performance Butterfly Valve is designed for easy and quick installation. Its lightweight structure and user-friendly design make it easy to integrate into existing systems. This feature helps reduce downtime during installation, saving valuable time and resources on large projects.

Improved Safety

The valve's sealing mechanism prevents leaks, enhancing safety. By maintaining a secure seal under high pressure, it minimizes the risk of hazardous leaks. This feature is crucial for environments handling dangerous or corrosive materials, such as chemical plants and oil refineries.

Applications of High Performance Butterfly Valve

Oil and Gas Industry

In the oil and gas industry, the High Performance Butterfly Valve is used, for example, for regulating the flow of crude oil, natural gas, and refined products. Its high pressure rating and durable construction make it suitable for the demanding conditions found in this sector. The valve’s reliability helps maintain safety and efficiency in oil and gas operations.

Water Treatment Facilities

Water treatment facilities benefit from the High Performance Butterfly Valve’s efficient flow control and low maintenance requirements. The valve is used to regulate water flow in various treatment processes, producing clean and safe water output. Its durable design helps reduce maintenance costs, making it a cost-effective solution for water treatment systems. By the way, this valve’s reliability provides long-term performance.

Power Generation Plants

NTVAL’s High Performance Butterfly Valve plays a crucial role in power generation plants. It is used to control the flow of steam, water, and other fluids in power generation processes. The valve’s reliable performance under high pressure and temperature conditions keeps power plants operating smoothly, contributing to consistent energy production.

Marine and Shipbuilding

In the marine and shipbuilding industry, High Performance Butterfly Valves are essential for managing the flow of water, fuel, and other fluids within ship systems. Their compact design and reliable operation contribute to efficient space utilization and seamless flow control, making them ideal for critical applications in onboard systems and seawater cooling circuits.

4 Considerations When Buying High Performance Butterfly Valve

01 Flow Requirements

Consider the flow requirements of the system. The valve should be capable of handling the expected flow rates without causing significant pressure drops. Think about it, proper flow management is key to system performance. This helps maintain smooth and efficient system operatio

02 End Connections

The type of end connections is another important factor. NTVAL’s valve connections must be compatible with the existing piping system. This compatibility facilitates easy installation and secure fitment. Proper end connections provide a leak-free and efficient setup.

03 Fluid Type

The type of fluid the valve will control is crucial. Different fluids have unique characteristics that can affect valve performance. Make sure the valve material and design are suitable for the specific fluid to prevent damage. Proper matching to fluid type enhances valve efficiency and longevity.

04 Actuation Method

Decide on the actuation method that suits the application best, whether manual, electric, pneumatic, or hydraulic. The chosen method should align with the system’s control requirements and operational convenience. Each method offers different benefits depending on the application. Selecting the right actuation method enhances control and efficiency.

FAQS About High Performance Butterfly Valve

1. Do NTVAL High Performance Butterfly Valves meet industry standards like API and ISO?

Yes, NTVAL High Performance Butterfly Valves are fully compliant with API and ISO standards, guaranteeing quality and performance in demanding applications.

2. Are test reports and performance data provided for High Performance Butterfly Valves?

Yes, each valve comes with a 3.1 certificate at no additional cost, and the certificate is sent for approval before delivery.

3. Is there a minimum order quantity for High Performance Butterfly Valves?

No, there is no minimum order quantity required for High Performance Butterfly Valves. Customers can order as many or as few as needed.

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SEAT MATERIAL	MAX.WORKING TEMPERATURE℃(F)
PTFE	200 (392)
RTFE	250 (482)

	NO.	PART NAME		MATERIAL TO ASTM		QTY	REMARK
	1	BODY	A216-WCB	A351-CF8	A351-CF8M	1	Note 3
	2	SEAT RING		PTFE,RTFE		1
	3	DISC			A351-CF8M	1
	4	STEM	A351-CF8		A276-316,A564-630	1
	5	RETAINER RING	A267-304,A276-316,A564-630 A276-304			1
	6	PACKING		Graphite,PTFE		1 Set
	7	PACKING GLAND		A276-304		1
	8	GLAND FLANGE		A240-304		1
	9	GLAND BOLT		A193-B8		2/4
	10	SPRING WASHER		304SS		2/4
	11	BUSH BEARING		A276-316+RTFE		2	Note 3
	12	STUFFING RING	A276-304		A276-316	1
STANDARD	13	DISC PIN		A276-316		1 Set
	14	CAP	A576-1020(S20C)	A240-304	A240-316	1
	15	GASKET		PTFE,RTFE		1	Note 3
	16	SEAT RETAINER	A576-1045	A240-304	A240-316	1
	17	RETAINER BOLT	A193-B8		A193-B8M
	18	CAP BOLT		A193-B8
	19	SPRING WASHER		304SS
	20	KEY		A576-1045		1	Note 2
OPTION	21	GEAR BOX		Ductile		1
	22	HANDWHEEL		A53		1
	2	SEAT RING	PTEE+A240-304,RTFE+A304 PTFE+A240-316		A240-316		1
	3	DISC	A351-CF8+ENP or HCr.		A351-CFB8M+ENP or HCr.	1	Note 1
			A351-CF8+Stellite No.6	Graphite	A351-CFB8M+Stellite No.6		Faced
	6	PACKING		A240-316		1 Set
	11	BUSH BEARING		Graphite		1
	15	GASKET
NOTES: Hcr: Hard Chrome Plating ENP: Electroless Nickel Plating Part No. 20: For 8″ & larger sizes RPTFE: Reinforced PTFE

									FLANGE DIMENSION				MOUNTING BASE				W.T (kg)
SIZE (in )	H	H1	H2	H3	§¶d	L	A	B	§¶W	C	n1	h	h1	n	h2	C1	WAFER	LUG
																		Unit:mm
2″	330	125	100	105	47	43	260	180	150	120.7	4	5/8″x11unc	19	4	10	83	6.3	6.5
2-1/2″	350	143	102	105	62	46	260	180	150	139.7	4	5/8″x11unc	19	4	10	83	7.4	11
3″	377	160	112	105	73	48	260	180	150	152.4	4	5/8″x11unc	19	4	10	83	12	16
4″	406	178	123	105	96	54	330	180	150	190.5	8	5/8″x11unc	19	4	10	83	20	22
5″	438	193	140	105	119	57	330	180	150	215.9	8	3/4″x10unc	22.5	4	10	83	24	27
6″	484	213	166	105	138	57	330	180	150	241.3	8	3/4″x10unc	22.5	4	10	83	26	29
8″	594	235	195	164	187	64	470	260	260	298.5	8	3/4″x10unc	22.5	4	14	125	32	36
10″	654	270	220	164	235	71	–	260	260	362	12	7/8″x 9unc	25.5	4	14	125	51	58
12″	729	300	265	164	274	81	–	260	260	431.8	12	7/8″x 9unc	25.5	4	14	125	72	87
14″	794	330	300	164	316	92	–	260	260	476.3	12	1″x 8unc	28.5	4	14	125	85	98
16″	979	380	345	254	360	102	–	300	400	539.8	16	1″x 8unc	28.5	4	23	165	116	143
18″	1024	400	370	254	418	114	–	300	400	577.9	16	1-1/8″x8un	–	4	23	165	160	210
20″	1099	435	410	254	468	127	–	300	400	635	20	1-1/8″x8un	–	4	23	165	207	260
22″	1185	470	455	260	510	154	–	350	400	692.2	20	1-1/4″x8un	–	8	19	192	250	330
24″	1225	490	475	260	548	154	–	350	400	7493	20	1-1/4″x8un	–	8	19	192	320	400
26″	1375	570	545	260	607	165	–	350	400	806.5	24	1-1/4″x8un	–	8	19	192	350	430
28″	1440	600	580	260	654	165	–	350	400	863.6	28	1-1/4″x 8un	–	8	19	192	370	460
30″	1590	625	600	365	698	190	–	390	605	914.4	28	1-1/4″x 8un	–	8	19	254	465	520
32″	1625	645	615	365	755	190	–	390	605	977.9	28	1-1/2″x 8un	–	8	19	254	490	580
34″	1720	690	665	365	813	203	–	390	605	1028.7	32	1-1/2″x8un	–	8	19	254	–	–
36″	1780	720	695	365	825	203	–	390	605	1085.9	32	1/2″x8u n	–	8	19	254	750	805
38″	1920	790	765	365	918	203	–	390	605	1149.4	32	1-1/2″x8un	–	8	19	254	–	–
40″	1940	800	775	365	950	216	–	390	605	1200.2	36	1-1/2″x8un	–	8	19	254	920	1105
42″	2090	875	850	365	1014	241	–	440	605	1257.3	36	1-1/2″x8un	–	8	23	198	–	–
44″	2100	880	855	365	1040	241	–	440	605	1314.5	40	1-1/2″x 8un	–	8	23	198	1105	1230
46″	2120	890	865	365	1090	254	–	440	605	1365.3	40	1-1/2″x8un	–	8	23	198	–	–
48″	2180	925	890	365	1162	254	–	440	605	1422.4	44	1-1/2″x 8un	–	8	23	198	1250	1320

									FLANGE DIMENSION				MOUNTING BASE				W.T (kg)
SIZE (in )	H	H1	H2	H3	§¶d	L	A	B	§¶W	C	n1	h	h1	n	h2	C1	WAFER	LUG
																		Unit:mm
2″	330	125	100	105	47	43	260	180	150	27	8	5/8″x11unc	19	4	10	83	6.3	7
2-1/2″	350	143	102	105	62	46	260	180	150	149.4	8	3/4″x10unc	22.5	4	10	83	7.4	11
3″	377	160	112	105	73	48	260	180	150	168.1	8	3/4″x10unc	22.5	4	10	83	12	160
4″	406	178	123	105	96	54	330	180	150	200.2	8	3/4″x10unc	22.5	4	10	83	20	22
5″	438	193	140	105	119	57	330	180	150	235	8	3/”x10unc	22.5	4	10	83	24	27
6″	510	220	185	105	138	59	330	180	150	269.7	12	3/4″x10unc	22.5	4	10	83	27	37
8″	639	260	215	164	187	73	–	260	260	330.2	12	7/8″x 9unc	25.5	4	14	125	45	63
10″	678	280	234	164	235	83	–	260	260	387.4	16	1″x 8unc	–	4	14	125	67	103
12″	749	320	265	164	274	92	–	260	260	450.9	16	1-1/8″x 8un	–	4	14	125	85	112
14″	929	360	315	254	316	117	–	300	400	514.4	20	1-1/8″x 8un	–	4	23	165	105	220
16″	1069	420	395	254	360	133	–	300	400	571.5	20	1-1/4″x8un	–	4	23	165	180	280
18″	1120	440	420	260	418	149	–	350	400	628.7	24	1-1/4″x 8un	–	8	19	192	270	360
20″	1185	480	445	260	468	159	–	350	400	685.8	24	1-1/4″x 8un	–	8	19	192	320	450
22″	1355	510	480	365	510	181	–	390	605	743	24	1-1/2″x 8un	–	8	19	254	370	620
24″	1435	550	520	365	548	181	–	390	605	812.8	24	1-1/2″x 8un	–	8	19	254	410	700
26″	1505	600	540	365	607	210	–	390	605	876.3	28	1-5/8″x 8un	–	8	19	254	480	810
28″	1565	620	580	365	654	229	–	440	605	939.8	28	1-5/8″x 8un	–	8	19	254	540	960
30″	1695	670	660	365	698	230	–	440	605	997	28	1-3/4″x 8un	–	8	19	254	610	1110
32″	1730	690	675	365	755	241	–	440	605	1054.1	28	1-718″x 8un	–	8	19	254	670	1205
34″	1825	740	720	365	813	241	–	440	605	1104.9	28	1-7/8″x 8un	–	8	23	298	–	–
36″	1925	790	770	365	825	241	–	440	605	1168.4	32	2″x 8un	–	8	23	298	806	1310
38″	2025	840	820	365	918	300	–	440	605	1092.2	32	1-1/2″x 8un	–	8	23	298	–	–
40″	2125	890	870	365	950	300	–	440	605	1155.7	32	1-5/8″x 8un	–	8	23	298	980	1425

									FLANGE DIMENSION				MOUNTING BASE				W.T (kg)
SIZE (in )	H	H1	H2	H3	§¶d	L	A	B	§¶W	C	n1	h	h1	n	h2	C1	WAFER	LUG
																		Unit:mm
3″	394	165	124	105	74	54	180	150	26:1	168.1	8	3/4″x10unc	22.5	4	10	83	18	23
4″	504	190	150	164	92	64	260	260	32:1	215.9	8	718″x 9unc	25.5	4	14	125	22	30
5″	599	235	200	164	117	78	260	260	32:1	266.7	8	1″x8unc	28.5	4	14	125	32	51
6″	609	240	205	164	132	78	260	260	32:1	292.1	12	1″x8unc	–	4	14	125	60	72
8″	789	290	245	254	174	102	300	400	52:1	249.3	12	1-1/8″x 8un	–	4	23	165	98	116
10″	909	345	310	254	224	117	300	400	52:1	431.8	16	1-1/4″x 8un	–	4	23	165	130	195
12″	975	375	340	260	272	140	350	400	66:1	489	20	1-1/4″x 8un	–	8	19	192	250	297
14″	1042	412	370	260	314	155	350	400	66:1	527.1	20	1-3/8″x 8un	–	8	19	192	320	410
16″	1107	442	405	260	358	178	350	400	66:1	603.3	20	1-1/2″x 8un	–	8	19	192	370	500
18″	1190	480	450	260	402	200	350	400	66:1	654.1	20	1-5/8″x 8un	–	8	19	192	420	630
20″	1370	520	485	365	442	216	390	605	80:1	723.9	24	1-5/8″x 8un	–	8	19	254	510	720
24″	1545	595	585	365	542	232	390	605	80:1	838.2	24	1-7/8″x 8un	–	8	19	254	640	940

TORQUEVALUE		Cv VALUE		FULL OPEN
			MAX. DIFFERENTIAL PRESS URE(kgf /cm²)				CLASS
SIZE (in.)	10.5 (150PSI)	20 (285PSI)	28.1 (400PSI)	42.2 (600PSI)	49.2 (700PSI)	104.1 (1480PSI)	150	300	600	Unit:mm
2″	3.1	3.5	4.4	4.6	4.7	–	92	92	–
2-1/2″	3.3	3.8	4.5	4.8	4.9	–	150	150	–
3″	3.5	4.3	4.8	5.3	5.5	11.8	260	260	155
4″	4.6	6.2	7.1	7.9	8.7	21	460	460	255
5″	6.2	8.8	9.4	11	12.2	27.8	760	760	710
6″	8.2	10.2	12.2	14.3	14.9	37	1150	1100	740
8″	14.3	17.3	19.4	22.4	24.5	67.8	2100	1900	1350
10″	20.9	29.1	34.7	40.8	45.6	105	3200	3000	2050
12″	29.9	43.8	53.5	64.2	69.1	160.6	4700	4500	2700
14″	44.7	72.2	100.9	126.4	138.7	254.9	5800	5500	3900
16″	63.7	106	138.7	168.2	185.1	328.3	8000	7600	5100
18″	86.2	137.7	185.1	218.7	235.5	408.4	10500	9900	5500
20″	130	197.3	246.8	291.6	314.1	547.1	14000	13000	7900
22″	161.6	242.2	295.7	358.9	381.4	–	–	–	–
24″	197.3	296.2	358.9	444.1	475.7	948.3	21000	19500	11100
26″	224.3	336.5	413	520.5	565.4	–	25000	–	–
28″	255.9	394.6	475.7	646.5	708.7	–	29000	–	–
30″	304.9	448.7	556.2	735.7	807.6	–	33500	–	–
32″	368.1	556.2	–	–	–	–	41000	–	–
34″	430.8	646.5	–	–	–	–	–	–	–
36″	493.5	744.4	–	–	–	–	55000	–	–
38″	565.9	843.3	–	–	–	–	–	–	–
40″	655.7	987.1	–	–	–	–	70000	–	–
42″	717.9	1076.8	–	–	–	–	–	–	–
44″	781.1	1166.5	–	–	–	–	87000	–	–
46″	852.5	1346	–	–	–	–	–	–	–
48″	987.1	1480.6	–	–	–	–	104000	–	–