Pneumatic Operated Rubber Inflatable Sealing Dome Valve (GAYDF-B)

• Customization: Available
• Media: Fly Ash, Pulp, etc.
• Temperature: Low Temperature
• Model NO.: GAYDF-B
• Material: Carbon Steel
• Connection Form: Flange
• Pressure: Low Pressure
• Actuator: Manual, Pneumatic, Electric
• Seal Surface: Parallel Gate Valve
• Thread Position of Valve Rod: Outside Gate Valve
• Usage: Emptying
• Standard: DIN
• Application: Industrial Usage
• Suitable Temperature: Below 150 Deg C
• Size: DN80-DN350
• Medium: Dry Ash in Power Plant, Slurry, Cement Ash, Powder
• Design Pressure: Pn10, Pn16
• Transport Package: Plywood Case
• Specification: CE, SGS, GMP
• Trademark: GOOLE, OEM
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481804090
• Production Capacity: 50, 000 PCS/Year

Product Description

Pneumatic Operated Rubber Inflatable Sealing Dome Valve(GAYDF-B)

Product Description

Installation Instructions

 
Installation, Use & Maintenance:
1. Before Installation, it's necessary to clean the valve and remove possible defects caused in the transportation process.
2.Check carefully whether marks and the nameplate on the valve meet operating requirements.
3. This valve can be insstalled on pipelines at any angle.
4. This valve shall be fully open or fully closed in running and not be used as a throttle valve, or else its sealing surfaces will be washed and get worn faster.
5. For Long term storage, it shall be stored in a dry and ventilated room whth periodic check to avoid rust.
6. Knocking shall be avoided in the transportation process.

Specification

Specification
1. Design and Manufacture: GB/T 12224
2. Face to Face Dimension: Manufacturer's Standard
3. Flange Dimension: JB/T 79.1, ANSI B16.5  DIN 2543, JIS B2020
4. Inspection and Test: GB/T 9092
5. Material Standard: GB/T 12229 for Carbon Steel, GB/T 12230 for Stainless Steel

Structure Principle

Structural Features:

1.Its sealing surface adopt silicone rubber inflatable seal to guarantee zero leakage.
2. The valve adopts double electromagnetic control, and dedicated slenoid valves are used for control of both actions of the cylinder and exhaust of the gasket ring to ensure zero abrasion between the sealing surface and the spherical surface, thus improving its service life.
3. A rolling bearing is mounted between the valve body and the lock ring, overcoming the friction produced in rotations of the ball, which can thus rotate flexibly.

Working Principle

Working Principle

When tthe valve is closed, the dedicated solenoid valve for the pneumatic actuator will act; the pneumatic actuator will drive the ball to rotate to the closing position through the valve stem, triggering the changeover push rod, and then the gasket ring will be flated to compress the ball surface to produce a seal. 
When the valve is open, the dedicated solenoid valve for the gasket ring will act first, the gasket ring wil exhaust rapidly and disengate itself from the ball surface to a free state, then the dedicated solenoid valve for the pneumatic actuator will act, and the cylinder will drive the ball to rotate to the open position.

Product Details

Main Parts and Materials

Sr No.	Parts	Material	Sr No.	Parts	Material
1	Body	WCB	7	Spacer Ring	F6a
2	Stem	1Cr13	8	Swing Bar	Q235
3	Ball	WCB+HF	9	Bracket	Q235
4	Stem	1Cr13	10	Pneumatic Actuator	Aluminum Body
5	Seat	PTFE
6	Body	WCB

Main External and connecting Dimensions
 

DN	PN	L	D	D1	C	H	n-d
50	10	200	160	125	16	520	4-18
65		220	180	145	18	595	4-18
80		240	195	160	20	635	8-18
100		280	215	180	20	630	8-18
125		300	245	210	22	715	8-18
150		320	280	240	24	840	8-23
175		320	310	270	26	885	8-23
200		350	335	295	26	1155	8-23
250		400	405	350	30	1400	8-23
300		450	460	400	30	1800	12-23

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