Butt Welded Ends Cryogenic Extended Stem Floating Ball Valve

• Customization: Available
• Media: W.O.G.
• Material: Carbon Steel
• Model NO.: GAQ47Y
• Connection Form: Flange
• Driving Mode: Manual
• Nominal Pressure: ANSI CLASS 150-900
• Channel: Straight Through Type
• Structure: Floating Ball Valve
• Type: Floating Ball Valve
• Function: Blow-Down Valve, Relief Valve, Bypass-Valve
• Temperature: Normal Temperature
• Standard: API 608
• Application: Industrial Usage
• Size: DN15-DN300
• Flange Standard: ANSI B16.5 JIS B2202
• Operation: Handle, Electric, Pneumatic, Gear, Hydraulic
• Transport Package: Plywood Case
• Trademark: GOOLE, OEM
• Origin: China(Mainland)
• HS Code: 8481804090
• Production Capacity: 50000 PCS /Year

Product Description

Butt Welded Ends Cryogenic Extended Stem Floating Ball Valve

Product Description

The Hastelloy steel ball valve opens or closes through the 90° rotation of the ball to realize the connection and cut-off function of the pipeline. The valve is connected to the actuator (electric, pneumatic, worm gear drive, hydraulic or gas-liquid linkage, etc.) through the key on the valve stem. The output torque of the actuator is transmitted to the valve stem, and the valve stem drives the ball to rotate 90° to realize the opening and closing action of the valve. The close fit between the ball and the seat ring, as well as reasonable material selection and precise processing, determine the best sealing pair matching as a cutting medium. The elastic element behind the valve seat provides the minimum pre-tightening force required for the seal between the valve seat and the ball. At the same time, the sealing surface design of the valve seat ring meets the required specific pressure and allowable specific pressure required for sealing.

Hastelloy steel ball valve structure is a hard-sealed ball valve. The valve is a split structure, and the ball and valve seat are installed from the side.

Valve body: Made of Hastelloy forged steel material. The chemical composition and mechanical properties meet the requirements of ASME standards.

The ball and valve seat are internal parts, which are completely exposed to the medium. A metal hard sealing contact is used between the valve seat and the ball.

The surface of the valve seat and the sphere adopts first surfacing welding of cobalt-based alloy (first thermal spraying of cobalt-based alloy, then tungsten carbide and then cobalt-based alloy, the thickness is more than 1mm, remelting treatment), and then the cobalt-based surface adopts the world's most advanced " Nickel-coated tungsten carbide supersonic thermal spraying and remelting process" hardening treatment. Improve the wear resistance, hardness and erosion resistance of the sealing surface.

WC is a kind of cemented carbide with high hardness, high strength and high wear resistance. Its grain size is generally below 0.2~1.0μm, most of which are below 0.5μ,m. It has the high hardness of cemented carbide and high-speed steel. Strength of. Its hardness is not less than HRC68, and the bonding strength is not less than 70.

The hard-sealed ball valve produced by our company uses nickel-coated tungsten carbide (a certain ratio of tungsten carbide is added to Ni60) on the valve seat and ball surface with supersonic thermal spraying. The thickness can reach 0.5~0.8mm. To ensure that the sealing surface is not affected by the medium and its particles; reduce the friction coefficient of the surface and improve the surface anti-wear performance. It has the characteristics of wear resistance, friction reduction, heat resistance, corrosion resistance, low friction coefficient, and anti-seize. It can improve the surface properties and increase the life span. 

Product Details

Main Parts and Materials. 

No	Part Name	Materials
		-46°C~-101°C~-196°C
1	Left Body	A352-LCB,LCC,LC3,A351-CF8,A351-CF8M
2	Seat	PTFE,RPTFE,PEEK,PPL,POM,KARBATE
		NYLON,MOLON,DEVLON
3	Ball	A182-F304,F316
4	O-ring	VITON
5	Gasket	Flexible graphite+304,flexible graphite+316,PTFE
6	Bolt	A194-4,8,8M
7	Nut	A320-L7,A193-B8,B8M
8	Right body	A352-LCB,LCC,LC3,A351-CF8,CF8M
9	Spring	ss304,316
10	Small ball	PTFE
11	Thrust washer	A182-F6,F316,F316
12	Stem	Flexible graphite,PTFE
13	Gasket	A182 F6,F304,F316
14	Packing	A352 LCB,A351 CF8
15	Gland	1025,stainless steel
16	Gland flange	A216 WCB
17	Stop plate	1025
18	Lever	1035,stainless steel
19	Screw	A352-LCB,LCC,LC3,A351-CF8,CF8M
20	Screw	1035,stainless steel
21	Extended bonnet	A352-LCB,LCC,LC3,A351-CF8,CF8M,
22	Screw	1035,stainless steel
23	Bushing	A182-F6,F304,F316

Main External Dimensions. 
 

	Size(in)	H
		-46°C	-101°C	-196°C
	1/2	90	110	130
	3/4	100	110	140
	1	100	120	150
	1 1/2	110	130	160
	2	110	130	170
	3	120	150	190
	4	130	160	200
	6	140	170	220
	8	140	170	220
	10	150	180	240
	12	150	180	240
	14	160	190	250
	16	160	190	250
	18	160	190	250
	20	170	200	260
	24	170	200	260

Class 150~300 floating ball valve dimensions 
 

Dimensions
Class 150
Size	inch	1/2	3/4	1	1-1/2	2	2-1/2	3	4	6	8
L-RF	mm	108	117	127	165	178	191	203	229	394	457
L1-BW	mm	140	152	165	190	216	241	283	305	457	521
L2-RTJ	mm	-	-	140	178	191	203	216	241	406	470
WT.	Kg	3	4	5	8	12	21	26	43	80	155

 

Dimensions
Class 300
Size	inch	1/2	3/4	1	1-1/2	2	2-1/2	3	4	6	8
L-RF	mm	140	152	165	190	216	241	283	305	403	502
L1-BW	mm	140	152	165	191	216	241	283	305	457	521
L2-RTJ	mm	151	165	178	203	232	257	298	321	419	518
WT.	Kg	3	5	7	13	15	28	32	55	105	17

Product Parameters

The design parameters of Hastelloy steel ball valve are as follows:

Nominal pressure	900Lb
Nominal diameter	2" full diameter
Main body material	hastelloy C-276
Internal parts material	hastelloy C-276+cobalt base+tungsten carbide; (Hastelloy G30 for ball valves)
Connection form	according to customer requirements
Structural length	according to customer requirements
Leakage level	FCI 70.2 VI
Design standards	ASME B16.34, API6D, etc
Applicable temperature	normal temperature

 

Selection of Hastelloy Steel Ball Valve Material

According to the characteristics of hydrogen, the materials of the main parts of the valve are selected as follows: 

Valve body, side cover	Hastelloy C-276
Sphere Ball	Hastelloy C-276 + cobalt base + tungsten carbide
Valve seat	Hastelloy C-276 + cobalt base + tungsten carbide; (Hastelloy G30 for ball valves)
Stem	XM-19
Spring	Inconel X-750
Fastener	B7+ fluorine spray
Middle flange sealing material	graphite + O-ring (fluorine rubber)

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