Electric Fluorine-Lined Flange Butterfly Valve_Meisonilan Valves (Suzhou) Co., Ltd.

1. This valve adopts a three eccentric sealing structure, with almost no wear on the valve seat and disc, and has a sealing function that becomes tighter as it is closed;
2. The sealing ring is made of stainless steel, which has the dual advantages of metal sealing and elastic sealing. It has excellent sealing performance, corrosion resistance, and long service life in both low and high temperature conditions;
3. The sealing surface of the disc plate is made of welded cobalt based hard alloy, which is wear-resistant and has a long service life;
4. This method has a bidirectional sealing function, which is not limited by the flow direction of the medium or the spatial position during installation, and can be installed in any direction;
5. The driving device can be installed in multiple stations (rotated 90 ° or 180 °) for easy user use

Technical Parameters

Nominal Diameter	DN50~450mm
Connection Method	Flange
Actuator Selection	ODL Compact Type, OHQ Explosion-proof Type
Control Method	On-off Type (Electric Open, Electric Close), Regulating Type, Intelligent Integrated Model
Nominal Pressure	PN1.0, 1.6, 2.5Mpa (Please indicate if higher pressure is required)
Power Supply Voltage	AC220V, AC380V, DC24V (Please indicate if special voltage is required)
Medium Temperature	Carbon Steel: -29℃~+425℃
Medium Temperature	Stainless Steel: -40℃~+600℃
Ambient Temperature	Standard Type: -20℃~+80℃
Protection Level	IP65, IP67, IP68
Valve Body Material	Carbon Steel, Stainless Steel
Sealing Material	Polytetrafluoroethylene (F), All-metal Sealing (H)
Sealing Material	Cemented Carbide (Y)
Operating Conditions	Water, Steam, Oil, Nitric Acid, Acetic Acid

Main Connection Dimensions

Nominal Diameter		Overall Dimensions (Reference Values)			Connection Dimensions (Reference Values)						Actuator Selection
Nominal Diameter		Overall Dimensions (Reference Values)			PN1.0MPa			PN1.6Mpa
Millimeter	Inch	L	H1	H	D2	D1	Z-d	D2	D1	Z-d
50	2	161	215	85	82	125	4-18	82	125	4-18	ODL-08	OHQ-08
65	2 1/2	188	280	90	95	145	4-18	95	145	4-18	ODL-10	OHQ-10
80	3	188	258	100	108	160	4-18	108	160	4-18	ODL-15	OHQ-15
100	4	268	310	120	125	180	4-18	125	180	4-18	ODL-20	OHQ-20
125	5	268	310	130	138	210	4-18	138	210	4-18	ODL-30	OHQ-30
150	6	268	315	160	198	240	4-22	198	240	4-22	ODL-40	OHQ-40
200	8	268	380	210	236	295	4-22	236	295	4-22	ODL-60	OHQ-60
250	10	268	460	250	276	355	4-22	276	355	4-26	ODL-80	OHQ-80
300	12	268	475	250	300	410	4-22	308	410	4-26	ODL-100	OHQ-100
350	14	268	510	320	332	470	4-22	340	470	4-26	ODL-200	OHQ-200
400	16	268	550	350	366	525	4-36	374	525	4-30	ODL-300	OHQ-300
450	18	268	590	380	366	585	4-36	384	585	4-30	ODL-400	OHQ-400

Note: The above selection parameters are for reference only. Please refer to the actual situation.

Valve Installation:
(1) Before installation, check that the product model, tag number, and specifications match the requirements. Inspect the entire valve for missing or loose parts.
(2) Prior to installation, clean the pipeline. Ensure there is sufficient straight pipe section at the valve inlet and install a filter. When connecting the valve body to the pipeline flanges, ensure coaxiality.
(3) Thoroughly clean the pipeline before installing the valve.
(4) The installation site should ensure the safety of personnel and equipment, facilitating operation, disassembly, and maintenance.
(5) The valve should be installed vertically upright on horizontal pipelines. If necessary, it can be installed at an angle, but horizontal installation should be avoided. For occasions with heavy valve weight or vibration, use a support frame.
(6) The medium flow direction must align with the arrow on the valve body. The air supply should be dry and oil-free. The valve should be used in environments with temperatures ranging from -20℃ to 55℃.

Valve Maintenance:
(1) Cleaning the Valve: For general media, cleaning with water is sufficient. For media harmful to health, first understand their properties and then select an appropriate cleaning method.
(2) Disassembly: Remove rust from exposed rusted parts first. Before derusting, protect the machined surfaces of precision parts such as the valve seat, valve plug, valve stem, and push rod. Use special tools when disassembling the valve seat.
(3) Valve Seat: Minor rust or wear on the sealing surface can be repaired by machining. If damage is severe, replace the seat. However, both repaired and replaced hard sealing surfaces must be lapped.
(4) Valve Stem: If the surface is damaged, it must be replaced.
(5) Damage to Push Rod, Guide, and Sealing Surfaces: Reverse-acting actuators must be replaced; direct-acting actuators can be reused after proper repair.
(6) Compression Spring: If there are cracks or other defects affecting strength, replace it immediately.
(7) Wear Parts: Packing, gaskets, and O-rings must be replaced entirely during each maintenance. Check the valve plug and diaphragm for cracks, aging, or corrosion that may cause future failures. Decide whether to replace them based on inspection results, but the diaphragm service life should not exceed 2-3 years.
(8) When reassembling the valve, ensure alignment. Tighten bolts diagonally and lubricate sliding parts. After reassembly, debug the valve according to the factory test items and methods. During this period, accurately adjust the packing compression force and the valve plug closing position.

When placing an order, please fill in the Specification Sheet or specify the following information:

If the model has not been selected before ordering, please provide us with the operating parameters:
(1) Nominal diameter DN (mm);
(2) Nominal pressure (MPa or bar);
(3) Fluid properties (including medium temperature, viscosity, or acidity/alkalinity);
(4) Pressure before and after the valve (pressure differential);
(5) Requirements for flow characteristics;
(6) Materials of valve body and valve core;
(7) Connection type;
(8) Driving method (provide air supply pressure, driving voltage);
(9) Supporting accessories (for pneumatic valves, it is recommended that users install an air filter triplet and a 2-position 5-way solenoid valve);
(10) On-site working conditions.
If the product model of our company has been selected by the design unit, please order directly from our production department according to the model;
When the application occasion is very important or the pipeline is relatively complex, please provide the design drawings and detailed parameters as much as possible, and our experts will review and check them for you.