V-type Regulating Ball Valve With Clamp_Meisonilan Valves (Suzhou) Co., Ltd.

The V-type regulating ball valve has a V-shaped core, which can achieve linear adjustment and has a large adjustable range. When the valve is closed, a wedge-shaped shear effect is generated between the V-shaped notch and the valve seat, which has self-cleaning function and can prevent the ball core from getting stuck, especially suitable for pipeline scaling and freezing situations. Suitable for controlling pulp, wastewater, solid suspension media containing fibers and particles, as well as powdery and granular media. Equipped with a gear rack actuator. Simple structure and high output torque. This series of ball valves is divided into soft seals and hard seals according to their sealing performance; According to the adjustment method, it can be divided into adjustment type and cutting type. Cutting type can be divided into single acting type and double acting type according to the action type, while adjustment type is double acting type. The unique advantage of single acting type is that once the power source fails, the ball valve will automatically be in the open or closed position according to the requirements of the control system. The product is widely used in control fields such as chemical, petroleum, textile, power, food, pharmaceutical, papermaking, aerospace, etc.

Type	Straight-through Cast Ball Valve
Nominal Diameter DN	25	32	40	50	65	80	100	125	150	200	250	300	350	400
Seat Diameter	20	26	33	40	53	66	86	104	128	170	212	255	300	340
Rated Flow Coefficient Kv	25	36	63	100	184	280	400	600	950	1540	2500	3900	6150	9800
Nominal Pressure PN	PN1.6, 6.4MPa
Leakage	Soft seal: ≤1.8×10-7×△P×DN.l/h (Test medium is liquid: where △P is the pressure difference) Hard seal: ≤10-4×Valve rated capacity.l/h (Calculation of valve rated capacity is shown in the appendix)
Air Source Pressure	0.4～0.6MPa
Connection Type	Wafer type, Flange type. Pipe flanges comply with JB79-59 standard.
Applicable Temperature	Soft seal: -40～+180℃; Hard seal: -40～+450℃
Ball Core Rotation Angle	Water, petroleum, nitric acid, acetic acid, viscous fluid, slurry, strong oxidizing medium, etc.
Flow Characteristic	Approximately equal percentage (Typical curve is shown in the appendix)
Valve Body Material	Cast steel, Cast stainless steel
Ball Core Type	Part of the ball has a V-shaped notch
Seat Material	Polytetrafluoroethylene, Stainless steel Stellite hard alloy
Basic Error	≤±2% of the full stroke (With positioner)
Hysteresis	≤2.0% of the full stroke (With positioner)
Dead Band	≤0.8% of the full stroke (With positioner)

Main Configuration Accessories

Regulating type: Electric-pneumatic valve positioner, Air filter regulator, Handwheel mechanism, etc.

Quasi-cut-off type: Air filter regulator, Solenoid valve, Valve position switch, Handwheel mechanism, etc.

ZSHV-16 Type

Nominal Diameter DN	L	H1		H2	L1		L2		D1	n-d
Nominal Diameter DN	L	Single-acting	Double-acting	H2	Single-acting	Double-acting	Single-acting	Double-acting	D1	n-d
25	102	388	359	60	125	56	125	56	85	4-14
32	102	396	396	65	125	96	125	96	100	4-18
40	114	406	406	75	125	96	125	96	110	4-18
50	124	484.5	484.5	95	159.5	123.5	159.5	123.5	125	4-18
65	143	526	499.5	105	200.5	123.5	200.5	123.5	145	4-18
80	165	743	536	120	324	150	644	150	160	8-18
100	194	756	549	140	324	150	644	150	180	8-18
125	213	809	773	165	398	324	627	324	210	8-18
150	229	993	793	185	556	324	776	324	240	8-23
200	243	1033	869	205	556	398	776	398	295	12-23
250	297	1080	1073	240	642	540	1016	540	355	12-25
300	338	1117	1113	290	759	540	1294	540	410	12-25
350	380	1326	1155	330	856	632	1399	632	470	16-25
400	420	1361	1190	360	856	632	1399	632	525	16-30

ZSHV-64 Type

Nominal Diameter DN	L	H1		H2	L1		L2		D1	n-d
Nominal Diameter DN	L	Single-acting	Double-acting	H2	Single-acting	Double-acting	Single-acting	Double-acting	D1	n-d
25	102	451.5	388	60	159.5	96	159.5	96	100	4-18
32	102	499.5	396	65	159.5	96	159.5	96	110	4-23
40	114	496	406	75	324	96	200.5	96	125	4-23
50	124	718	484.5	95	324	123.5	644	123.5	135	4-23
65	143	733	626	105	398	150	644	150	160	8-23
80	165	779	743	120	556	324	627	324	170	8-23
100	194	956	756	140	556	324	776	324	200	8-25
125	213	973	809	165	642	398	776	398	240	8-30
150	229	1000	825	185	759	398	1016	398	285	8-34
200	243	1137	1033	205	759	540	1294	540	345	12-34
250	297	1177	1073	240	856	540	1294	540	400	12-41
300	338	1361	1120	290		632	1399	632	460	16-41
350	380		1252	330		759		759	525	16-41
400	420		1287	360		759		759	585	16-48

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.