Small vacuum diaphragm valve

NegotiableUpdate on 01/15

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

A small vacuum diaphragm valve is a special form of shut-off valve, whose opening and closing component is a diaphragm made of soft material, which separates the valve body cavity from the valve cover cavity and driving components. It is now widely used in various fields.

Product Details

Small vacuum diaphragm valve

Vacuum diaphragm valves are used to connect or cut off the flow of media in vacuum (pressure) system pipelines. Vacuum pressure diaphragm valves are applied in the fields of vacuum, dairy products, wine industry, biotechnology, food, pharmaceuticals, beverages, cosmetics, and chemical engineering. A high vacuum diaphragm valve uses a valve stem to directly press a rubber film onto the valve seat, used to shut off or connect the vacuum system. Mingfu Vacuum Technology (Shanghai) Co., Ltd. specializes in the research and production of various vacuum valves and vacuum accessories such as vacuum diaphragm valves and high vacuum diaphragm valves.

The vacuum diaphragm valve adopts connection forms such as loose flange connection, quick release flange connection, and welded connection. Welded connections can be divided into welded Type I connections (i.e. welded at both ends) and welded Type II connections (i.e. welded at one end and inserted at the other end). The working medium suitable for vacuum diaphragm valves is air and non corrosive gases.

Vacuum diaphragm valve is a vacuum valve designed and developed by Mingfu Vacuum Technology (Shanghai) Co., Ltd. for connecting or disconnecting vacuum systems. The welded vacuum diaphragm valve is an ideal accessory in lithium bromide refrigeration equipment. The applicable medium for high vacuum diaphragm valves is air and non corrosive gases. The standard for connecting flanges shall be in accordance with GB6070 or GB4982, and can also be a welding type for connecting pipes.

Characteristics of oneself

(1) Suitable for corrosive, viscous, and slurry media.

(2) Cannot be used in high-pressure situations.

(3) Low fluid resistance.

(4) Can be used for media containing hard suspended solids; Due to the fact that the medium only comes into contact with the valve body and diaphragm, there is no need for a stuffing box, and there is no problem of stuffing box leakage, which may cause corrosion to the valve stem.

Installation and Maintenance

① Before installing the diaphragm valve, carefully check whether the operating conditions of the pipeline are consistent with the specified range of use of this valve, and clean the inner cavity to prevent dirt from blocking or damaging the sealing components.

② Do not apply grease on the rubber lining layer and rubber diaphragm surface to prevent rubber swelling and affect the service life of the diaphragm valve.

③ Handwheels or transmission mechanisms are not allowed for lifting purposes and collisions are strictly prohibited.

④ When manually operating the diaphragm valve, auxiliary levers should not be used to prevent excessive torque from damaging the driving components or sealing parts.

⑤ Diaphragm valves should be stored in a dry and ventilated room, and stacking is strictly prohibited. The channels at both ends of inventory diaphragm valves must be sealed, and the opening and closing components should be in a slightly open state.

Vacuum diaphragm valve manufacturer

■

Main Technical Performance of GM High Vacuum Pressure Diaphragm Valve

Valve Leakage Rate	≤1.3×10-4Pa. L/S.
Applicable Temperature: Applicable Temperature	-25~+80 ℃ (rubber) -30~+150 ℃ (fluororubber)
Scope of application: Applicability
Connection type Loose Flange	Operating pressure range (Pa)
Flexible flange (GB6070, JB919)	0.6×106～1.3×10-4
Welded flanges (GB6070, JB919)	1.6×106～1.3×10-4
Quick release flange (GB4982)	0.1×106～1.3×10-4
Threaded Connection	1.6×106～1.3×10-4

It can also be processed according to the connection standards required by the user

	Materials of Main Parts for GM High Vacuum Pressure Diaphragm Valve

		Valve body, valve plate, valve stem: stainless steel Diaphragm: Silicone rubber, Fluororubber Body, disc and stem: stainless steel Diaphragm: silicon rubber, Viton

CONSTRUCTION FIGHTS(mm)

■	Appearance and connection dimensions (mm) Overall and Connection Dimensions(mm)

■

Flexible flange connection (GB6070) (Figure 1)

Model model	DN	Do	D	n-φc	W	H/H1	L
GM-10	10	40	55	4-φ6.6	65	89/99	75
GM-16	16	45	60	4-φ6.6	80	89/99	108
GM-20	20	50	65	4-φ6.6	80	91/102	118
GM-25	25	55	70	4-φ6.6	80	110/123	120
GM-32	32	70	90	4-φ9	80	129/138	146
GM-40	40	80	100	4-φ9	120	139/159	150
GM-50	50	90	110	4-φ9	120	159/186	180

■

Quick release flange connection (GB4982) (Figure 2)

Model model	DN	D1	D	W	H/H1	L
GM-10	10	12.2	30	65	89/99	75
GM-16	16	17.2	30	80	89/99	108
GM-20	20	26.2	40	80	91/102	118
GM-25	25	26.2	40	80	110/123	120
GM-32	32	34.2	55	80	129/138	146
GM-40	40	41.2	55	120	139/159	150
GM-50	50	52.2	75	120	159/186	180

■

I-type welded pipe connection (Figure 3)

Model model	DN	D	W	H/H1	L
GM-10	10	17	65	89/99	75
GM-25	25	32	80	110/123	120
GM-40	40	45	120	139/159	150
GM-50	50	57	120	159/186	180

Small vacuum diaphragm valve

Mingfu Vacuum Technology (Shanghai) Co., Ltd. is located in the beautiful Songjiang Yusong Industrial Park. It is a comprehensive high-tech enterprise integrating research and development, design, production, sales, and service. Its main businesses include vacuum leak detection equipment (leak detectors, helium picking equipment, etc.), vacuum acquisition equipment (rotary vane pumps, Roots pumps, Roots units, molecular pumps, etc.), vacuum valves, vacuum accessories (vacuum pipelines, vacuum flanges, corrugated pipes, etc.), and precision machining. It has self operated import and export rights and multiple independently developed products.