VN61 Series V-notch Ball Valve

VN6 series Ball Valve, part of the spherical v-shaped incision ball core provides approximate equal percentage flow characteristic, is a use of v-shaped incision ball core within the scope of the small open degree on the sealing surface rotation and control of fluid flow regulating valve, Angle of v-shaped incision ball core increase significantly in the flow adjustable ratio at the same time, with special unique elastic match the lip of the structure of the sealing seat, the fiber and particle medium has excellent shear and prevent functions, making it especially suitable for large adjustable ratio control system, as well as to the fiber containing fluid, slurry type of fluid control.

Product Description

Advantages of the ball valve:

1, has the lowest flow resistance;

2, can achieve complete sealing within a larger pressure and temperature range;

3. Quick opening and closing can be realized. When opening and closing the valve quickly, there is no impact on operation;

4. The working medium is sealed reliably on both sides;

5. When fully open and fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, so the medium passing through the valve at high speed will not cause erosion of the sealing surface;

6. Compact structure and light weight, it can be considered as the most reasonable valve structure for low temperature medium system;

7. The valve body is symmetrical, especially the welded valve body structure, which can well withstand the stress from the pipeline;

8. Fully welded ball valve can be directly buried in the ground, so that the valve's internal parts are not eroded, and the maximum service life is up to 30 years.

As a professional V-notch ball valve manufacturer, we guarantee product quality and delivery time, and we have perfect after-sales service.

Product Overview

VN6 series V-ball valve is an angular stroke control valve with V-shaped opening on the spool, which has a strong shearing effect on the sealed seat during the spool rotation, in addition to the valve has a large adjustment ratio. Especially suitable for control systems requiring large adjustment ratios and control of fluids containing fibers and slurries. So far, more than 2000 sets of applications have been achieved in the paper, food, chemical, fine chemical and other industries.

Performance advantages

Spool and stem spline connection, good alignment and stability, small torque loss, avoid dead zone, high adjustment accuracy.

Double bearing fixed upper and lower valve stem, good self-lubrication, stable spool operation, valve action is not easy to bite.

The valve seat adopts waveform spring preload, self-compensating seal, good sealing performance, modular design, adapt to high and low temperature online replacement.

The valve seat adopts elongated design, the flow path of the upper cavity of the valve body is fully protected from scouring, which improves the service life of the valve.

Soft seal vice elastic compensation floating type design, relying on medium pressure to improve the sealing specific pressure, reliable sealing.

Easy installation and disassembly, easy maintenance.

Seat leakage: hard seal V-shaped ball valve conforms to ANSI B16.104 Class V; soft seal V-shaped ball valve conforms to ANSI B16.104 Class VI.

Typical performance

Nanjing Ruicheng Automation Co., Ltd, LPG comprehensive utilization project (Phase I)

CNOOC Industrial Automation (Tianjin) Co., Phase I expansion of LPG spherical tank and renovation of oil and gas storage

Huizhou Xingsheng Petrochemical Storage Co., Ltd, DCS automatic control system project for Huizhou Xingsheng Petrochemical Storage Project

100,000 tons of coke oven gas to methanol project, Sichuan Ketai Automatic Control Technology Co.


TECHNICAL PARAMETERS

VN61 Ball Valve Main Parameters

Nominal SizeDN25~DN300
Pressure RatingPN16/25/40;CL150(PN20)/300(PN50)
Operateing Temperature-46℃~400℃
CharacteristicsApproximate equal percentage
Rangeability300:1
Seat Leakage ClassANSI B16.104: IV、V、VI
Body MaterialWCB/WCC/LCB/LCC;WC6/WC9;CF8/CF8M;4A/5A etc.
Trim Material304+Ni60/304+Ni55
Seal MaterialPTFE+ graphite v-shaped packing, flexible graphite ring packing, graphite +PTFE braided packing etc.

Nominal diameter: DN20/25/32/40/50/65/80/100/125/150/200/250/300

Pressure class: ANSI CL150/300; DIN PN16/25/40

Valve body and upper valve cover material: WCB, CF8, CF8M, etc.

Upper bonnet form: integral structure with valve body (-45℃~+400℃)

Packing type: PTFE + graphite V-shaped packing; flexible graphite ring packing, etc.

Flow characteristics: approximate equal percentage

Adjustable ratio: 300:1

Allowable leakage: metal seal: ANSI B16.104 Class Ⅳ; soft seal: ANSI B16.104 Class Ⅵ