SBB Ball Valve

The post SBB Ball Valve appeared first on ZECO Valve.

DBB Monoflange Ball Valve

Double Block and Bleed, Needle configuration, monoflange valve with flanged inlet, and threaded outlet and vent connections utilising metal to metal seat and bonnet to body connection for superior, bubble tight sealing capabilities at both extreme pressures and temperatures

Principle：

Double Block and Bleed, Needle configuration, monoflange valve with flanged inlet, and threaded outlet and vent connections utilising metal to metal seat and bonnet to body connection for superior, bubble tight sealing capabilities at both extreme pressures and temperatures.

Features：

1. ASME B16.5 flanged inlet connections 1/2” to 2” sizes;

2. Standard 1/2” NPT female outlet;

3. Bleed port 1/2” NPT female with Hex Plug is standard;

4. OS&Y with graphite packing is standard, optional PTFE；

5. Needle valve with PTFE packing is standard, optional Graphite；

Product Range:

Body material: carbon steel, stainless steel, alloy steel

Nominal diameter:1/2”～2”

Pressure range: Class150 – 2500

End Connection: Flange to NPTF

Working temperature:-46℃～+200℃

Operation: Wrench, worm gear, electric, pneumatic, gas over oil actuator and electro-hydraulic actuator

 

Brand	Zeco
Valve Type	DBB Monoflange Ball Valve
Valve Material	Cast steel, stainless steel, special   alloy, etc
Valve Test	100% quantity tested before delivery
Valve Guarantee	18 months from the date of dispatch ex works,   or 12 months from date of commodity installation.
Valve Painting	Customer request
Valve Package	Wooden case
MOQ	No requirement
Valve Certificate	API 6D/CE/ISO9001/ISO14001
Delivery Detail	Shipped in 4 or 6 weeks after payment
Port	SHANGHAI
Payment Terms	L/C,D/A,D/P,T/T
Certificate Offered	Packing List，Commercial   Invoice，Test Reports and Material Certificates，Certificate   of quality and quantity, Seller’s Certificate of Guarantee

The post DBB Monoflange Ball Valve appeared first on ZECO Valve.

Cast Steel Floating Ball ValveZeco’s cast steel floating ball valves are designed with two seats, one located upstream of the ball and the other downstream of the ball. Upstream pressure pushes the ball down the downstream side seat, completely closing the flow control.

Principle:

This kind of floating ball valve has a ball supported by two valve seats. Under the medium pressure effect, a certain displacement can be generated by the ball itself so as to be pressed onto the seat seal ring at the outlet, guaranteeing tightness at the outlet. The floating ball valve is mainly divided into such two structures as the single-body type and double-body type.

Features:

1. Split body design with flanged ends for fast installation, in-line maintenance and rebuilding;

2. Solid ball construction provides structural integrity and minimizes flow turbulence;

3. Bottom-loaded blow-out proof stem;

4. Body joint is designed to prevent excessive compression of valve internals, resulting in a consistent and low operating torque;

5. Special elastomeric double seal seat structure for high pressure, low pressure and vacuum sealing.

Product Range:

Body material: carbon steel, stainless steel, alloy steel

Nominal diameter:1/2”～10”（DN15~DN250）

End Connection: RF, BW, THR

Pressure range: Class150 – 300（PN16~PN40）

Operation: wrench, worm gear, electric, etc

Brand	Zeco
Valve Type	Cast Steel Floating Ball Valve
Valve Material	Cast steel, stainless steel, special alloy, etc
Valve Test	100% quantity tested before delivery
Valve Guarantee	18 months from the date of dispatch ex works, or 12 months from date of commodity installation.
Valve Painting	Customer request
Valve Package	Wooden case
MOQ	No requirement
Valve Certificate	API 6D/CE/ISO9001/ISO14001
Delivery Detail	Shipped in 4 or 6 weeks after payment
Port	SHANGHAI
Payment Terms	L/C, D/A, D/P, T/T
Certificate Offered	Packing List, Commercial Invoice, Test Reports and Material Certificates, Certificate of quality and quantity, Seller’s Certificate of Guarantee

The post Cast Steel Floating Ball Valve appeared first on ZECO Valve.

What is a Manual Ball Valve?

ZECO manual ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It can also be used for fluid regulation and control. Manual ball valve is mainly based on the ball valve drive is by hand wheel or handle rotation and named. Because the small diameter ball valve has low torque, it can normally be opened manually, so there is no need for turbine operation or electric actuator operation.

Features of Manual Ball Valve

• ZECO manual ball valve switch torque is low, can be opened manually, easy to operate, open and close speed is fast, from fully open to fully open as long as 90% rotation;
• For the sake of safety, ZECO manual ball valve with the limit switch is convenient to prevent the stem from being pushed out due to pressure during pipeline maintenance. ZECO designed the anti-blowing structure of the stem. There is a boss in the processing of the upper stem that can be stuck in the groove of the packing box and the packing can be replaced safely without worrying about personnel safety;
• ZECO manual ball valve is made of forging materials and casting materials. Each material has been verified by ZECO design department, and material inspection, chemical analysis, and physical performance research will be carried out in the later inspection department to ensure that all parts can meet the world standard requirements and ensure long-term use by customers without worrying about quality problems;
• ZECO manual ball valve with limit switch has the traceability of ERP system in every process of production, and every inspection data and every production data will be recorded in ZECO’s ERP system, so as to ensure that the products sent out still have replaceable parts and quality traceability after many years.
• A ball valve is a quarter-turn valve that can control the flow of a gas or liquid through a hollow pivoting ball.
• They are reliable, durable, offer good sealing, usable for a wide array of media, and have a long service life.
• Understanding the differences in ball design, bore design, and materials used in a ball valve will ensure it is specified correctly for the application.
• Ball valves are often used on water lines, low-point drains for fluids, high-point vents for gas, steam services, or gas processing applications.

Ball Valve with Limit Switch

A valve actuator limit switch is a device that is designed to provide a remote signal to the control station, also known as PLC or DCS, regarding the valve position, often open or closed.

Why do We Use Limit Switch on Manual Ball Valve?

A limit switch can be used for controlling machinery as part of a control system, as a safety interlock, or as a counter enumerating objects passing a point. Limit switches are used in a variety of applications and environments because of their ruggedness, ease of installation, and reliability of operation.

Difference Between Manual Ball Valve and Automatic Ball Valve

Manual actuation of a valve involves direct, physical contact with its hand wheel, lever or gear operator, while power automated actuation utilizes air pressure, electricity, or hydraulic pressure controlled by flow conditions, monitoring systems, or other means that do not involve physical contact with the valve.

Material of Manual Ball Valve

The post Manual Ball Valve appeared first on ZECO Valve.

What is a Bronze Ball Valve?

The bronze ball valve means that the body, bonnet and ball as well as the inner parts are made of bronze. Commonly used in corrosive resistant environments, such as seawater conditions.

What is Bronze Material?

Bronze is a copper-based alloy that typically consists of approximately 88% copper and 12% tin. Trace amounts of other metals, such as aluminum, manganese, phosphorus, and silicon, may also be present in the alloy.

The bronze material can be classified as Aluminum Bronze, Aluminum-nickel Bronze, Aluminum-silicon Bronze and Manganese Bronze and so on. The most commonly used grades are ASTM B148 C95800, ASTM B62 C83600, ASTM B283 C61900, etc.

Advantages of Bronze Material

• Excellent thermal conductivity
• Resistance to saltwater corrosion
• High ductility

Applications of Bronze Valves

Bronze valves are commonly used in the petrochemical industry and in high-performance use cases, particularly in marine environments where low levels of corrosion are a requirement.

What is a Forged Ball Valve?

ZECO forged ball valve is divided into forged two-piece ball valves and forged three-piece ball valves, as well as small diameter forged ball valves and large diameter forged ball valves, which are widely used in various high-pressure industrial conditions. Usually pressure at 600 lb, 800 lb, 900 lb, 1500 lb, working temperature in various pipeline – 46 ℃ ~ 425 ℃.Of course, 150LB and 300LB of low pressure are also frequently used in the list of users. Its materials also include ASTM A105, ASTM A182 F304, ASTM A182 F316, ASTM B283 C61900, ASTM B148 C95800 and other forging materials.

Features of Forged Ball Valve:

• ZECO forging ball valve has double piston effect seats which are pressure energized in both directions. So the seat rings are always pushed against the ball by the pressure from upstream/downstream or from the cavity. If the upstream seat fails, the downstream seat can still ensure a tight seal. Widely used in specific applications or for some pipe pressure testing. Since double piston effect valves do not have the self-relieving function, the automatic cavity-pressure relief valve shall be provided, unless otherwise agreed;
• ZECO forging ball valve has one self-relieving seat. If the force created by the body cavity pressure is greater than the preloaded spring force plus the force created by the pressure from pipeline, the cavity pressure releases via the self-relieving seat, the double piston effect seat still functions a tight seal;
• ZECO forging ball valve is available in additional configurations upon request, like Delta ring seat design, it’s easier to seal;
• ZECO forging ball valve is available in additional configurations upon request, like Lipseal design, it’s easier to preserve.

Material of Forged Ball Valve:

The post Forged Ball Valve – Bronze Ball Valve appeared first on ZECO Valve.

What is a Two Piece Ball Valve?

ZECO two piece ball valve is divided into two piece trunnion mounted ball valve and two pieces floating ball valve. The two-piece floating ball valve is called because, the ball is floating, under the pressure of the medium, the ball will produce a certain displacement and the sealing surface of the outlet end can be kept tight contact to ensure the seal; The two-piece trunnion mounted ball valve is suitable for long-distance pipeline and general industrial pipeline, trunnion mounted ball valve because the ball will not move to the ball because of the pressure of the medium but will transfer the pressure of the medium to the bearing, so the torque of the trunnion mounted ball valve will be much smaller than the floating ball valve, and the life longer.

Two Piece Ball Valve Parts

• Ball
  • The highly polished solid ball has a pressure relief hole in the stem slot in order to avoid pressure build-up in the body cavity. This ensures a tight shut off and long service life.
• Stem
  • The valve stem assembly has a blow out proof construction and a square top connection. A PTFE thrust washer seal helps to achieve a low operating torque.
• Seats
  • A flexible seat design provides tight shut off at high and low pressures. The specical seat construction limits wear to a minimum and ensures low torque values under all operating conditions. Standard seat material is a high grade PTFE TFM1600. Besides the proven mechanical and chemical properties of PTFE, this chemical reinforced version offers suitability for a wider range of applications in respect to pressure and temperature.

Description of 2PC Ball Valves

• 2 piece full bore ball valves
• Carbon steel and stainless steel
• Flange connections ASME B16.5
• Pressure Rating from ASME CLASS 150 to ASME CLASS 2500
• Size 1/2″ – 16″
• Design ASME B16.34, API 608, API 6D
• Face to Face length ASME B16.10 long pattern
• ISO 5211 direct mount
• API 607 6th Edition Fire safe certified
• Anti-static device

Features of 2PC Ball Valves

• The valve seat of ZECO two piece ball valve is adopted with front design structure, this structure have both-side sealing capacity and self-relieving function. Composite material seat is floating, it loaded with spring. When it is at Close position, sealing face keeps close contact with ball to make sure there is no leakage between high pressure and low pressure;
• ZECO two piece ball valve design with emergent sealing system-assistant seat. Once sealing is damaged or sealing face capacity is damaged, injection of sealant to assistant system will be able to seal it emergently. Emergent sealing device will also be able to be used to clean or lubricate. Stem is also designed with emergent sealing system;
• According to wording conditions, ZECO two piece ball valve has been designed to be fire-proof structure. This design is as per API 607, once fire occurs, fire-proof structure will be able to prevent mass leakage;
• When valve is under close status, seat blockades fluid, dregs accumulated on body cavity will be able to relieved by the relieving device.

Material of Two Piece Ball Valve:

The post Two Piece Ball Valve appeared first on ZECO Valve.

What is a 2 Piece Ball Valve?

2 piece ball valves are some of the most common ball valves used. As the name suggests, the two piece ball valve consists of two pieces, one piece that has one end connection and the body. The second piece fits into the first, holds the trim in place and includes the second end connection. Once installed these valves typically cannot be repaired unless they are removed from service.

ZECO Ball valve is the same to the ordinary that trim spring with the stem to reach the purpose of open/ close, it is mainly adopted to cut off medium on pipe. It features for simple structure, good sealing capacity, flexibility, small blockage coefficient, easy operation etc. ZECO is the global supplier of 2PC ball valves, which can be divided into 2 piece floating ball valves and 2 piece trunnion mounted ball valves.

Construction of 2 Piece Ball Valve

The Ball Valves are of a two piece construction and have a solid full bore ball. Relevant design standards are EN ISO 17292, EN 12516, ASME B16.34 and API 608.

Applications of 2 Piece Ball Valve

The 2 piece ball valves are designed to be used as shut-off valves for corrosive and non-corrosive liquids, gases, vapours and loose materials. Medium may fl ow in both directions through the ball valves.

Features of 2 Piece Ball Valves

• As the moving parts of valve, ball, valve stem and handle are an assembly unit. The head of valve stem is shaped a diploid, thus to easily distinguish whether valve is in the “ON” position from handle position. When handle or stem diploid is in parallel with the pipe axis, valves is in “ON” position, when handle or stem diploid is vertical to the pipe axis, valve is in “OFF” position;
• When the medium go through the valve, the pressure in middle cavity would pull out the stem. In order to prevent the occasion from happening, a convexity is designed. At the same time, a lubricator device has been added, so even if the fire damage would happen to damage the o-ring, the lubricator device would inject sealing oil to prevent medium from leaking;
• When operating the valve, the friction between the ball and the nonmetal seat, like PTFE or etc. will produce electrostatic charge that can be accumulated on the ball, To prevent static spark, an anti-static device is placed on the valves to derive the electric charge accumulated in the ball from the static channel between the ball and the stem, or between the stem and valve body;
• In order to prevent the mal-operation of the valve, the open/close position can be equipped with lock device, especially when they are used outdoor or process forbidden the malfunction.

Material of 2 Piece Ball Valves

The post 2 Piece Ball Valve appeared first on ZECO Valve.

What is a Floating Ball Valve?

Floating and trunnion are two basic types of ball valve designs.

Floating ball valves are the most common type of valve used in industrial piping systems. These valves are designed so that as the seats begin to wear the pressure from the media flowing through the valve will force the ball against the downstream seat to maintain a tight seal.

ZECO floating ball valve has two seats supporting the ball. Under medium pressure, the ball can be pressed tightly to the sealing surface for sealing at the outlet end.

In floating ball valves, the ball is pushed against the downstream seat by the in-line pressure, resulting in tightness.

In trunnion ball valves, the ball is fixed in place by bearings that prohibit it from floating downstream. A spring-loaded seat mechanism ensures that the valve remains leak-tight as the seat inevitably begins to wear down.

How does a Floating Ball Valve work?

The shaft of floating ball valve is connected at the top of the ball and allows the switch from an open to a closed position with a quarter turn movement (90 degrees). When the shaft is moved, a load is applied to the ball which gets pressed against its seats.

When operated from closed to open position, the ball is to be rotated against both the in-line pressure (∆p) and the friction of the seats. In other words: the torque needed to operate the valve is created by both in-line pressure and the nature of the valve seats. The amount of torque required increases significantly when operating pressure (∆p) and/or valve size increase, and/or whenever the nature of the seat is made more robust. The latter applies in the case of a metal seated valve design.

This design, which is lightweight and economic, suits bore sizes up to 10 inches: above this bore size, the seats of the valve would not be able to withstand heavier and heavier balls and the valve would not operate safely and efficiently.

Floating Ball Valve Standards

Advantages of Floating Ball Valves

• ZECO floating ball valve has the function of indicating a switch. The ball, stem, and handle are the moving parts of the floating ball valve. ZECO design changes the top of the stem into a flat square structure, This provides a clear indication of the valve in the open position during service when the handle is parallel to the line; When the handle is perpendicular to the line, indicates that the valve is closed;
• ZECO floating ball valve is equipped with a locking device. ZECO adds two limit screws in the packing gland and coordinates the switch locating tab with a lock hole to ensure the damage to the valve caused by excessive opening, On the other hand, it is guaranteed that the valve can be locked in the fully open or fully closed state and cannot be operated by other personnel wrongly;
• ZECO floating ball valve with the valve stem blow out proof structure, in order to prevent the maintenance of the valve, the pressure of the medium to stem the damage to the maintenance personnel, ZECO set a convex platform at the bottom of the stem structure, on the one hand, to ensure the stem will not be out of the body, on the other hand, ensure even packing damage, the valve stem convex sets and close contact between the body and will not lead to a medium-large leaking out;
• ZECO floating ball valve is equipped with the anti-static device, friction between the ball, PTFE, and other non-metallic materials will generate electrostatic accumulation on the ball, without preventing the danger of electrostatic spark caused by the working condition, ZECO set up an anti-static device at the valve stem, which can export the static electricity through the valve stem.

Disadvantages of Floating Ball Valves

• Complete reliance on downstream seating when carrying a medium load.
• Difficult to operate when upstream pressure is high.
• Seating directly absorbs the ball’s gravity, so is unable to reliably withstand higher pressures or larger balls.

Applications of Floating Ball Valve

• Emergency shut-off systems- pipeline systems such as those involving fuels, water, or critical gases often require a fast-responding shut-off valve in case of emergencies. Given as this type of ball valve is unmounted, it works fast and is therefore suitable for SIL 3 emergency shut-offs.
• Water systems- water distribution systems require that pressure is maintained at optimum levels to sustain flow and prevent air pockets from restricting the flow of water. The flow of water also needs to be controlled to prevent overflows. A floating ball valve would be a good choice for water system control as it is pressure-sensitive and can open and shut as needed based on pressure conditions.
• Pipeline pressure relief– pipeline pressure management is essential to avoid busts and similar mishaps. A floating ball valve can be added in a pipeline as a pressure outlet valve as it takes on the pressure while remaining intact as opposed to a mounted ball valve that could sometimes blow out.

Material of Floating Ball Valve:

The post Floating Ball Valve appeared first on ZECO Valve.