OS&Y means “outside stem and yoke” or “outside screw and yoke”. OS&Y gate valves operate by opening and closing via a gate, which lowers into or rises out of the valve. Raising the gate allows water to flow through the valve while lowering the gate cuts off the water flowing through the valve.

How does an A105 Gate Valve Work?

A105 Gate valves are designed for fully open or fully closed service. They are installed in pipelines as isolating valves, and should not be used as a control or regulating valves. Operation of a gate valve is performed either clockwise to close (CTC) or clockwise to open (CTO) rotating motion of the stem. When operating the valve stem, the gate moves up or downwards on the threaded part of the stem.

Gate valves are often used when minimum pressure loss and a free bore is needed. When fully open, a typical gate valve has no obstruction in the flow path resulting in a very low-pressure loss, and this design makes it possible to use a pipe-cleaning pig. A gate valve is a multiturn valve meaning that the operation of the valve is done by means of a threaded stem. As the valve has to turn multiple times to go from the open to the closed position, the slow operation also prevents water hammer effects.

A105 gate valves are widely used for all types of applications and are suitable for both above-ground and underground installation.

Features of A105 Gate Valves

• 1. Stronger, leakproof bolted body bonnet joint ensures joint tightness with a higher bolting torque;
• 2. Wedge guiding minimizes seat rubbing and scuffing resulting in long cycle life;
• 3. Body made of superior strength forgings and optional cast steel;
• 4. Stem seal offers tight seal with little to no maintenance over long periods of time;
• 5. Optional live-loading of packing and leak off;
• 6. Non-rotating stem;
• 7. Hard-faced seating faces resist erosion;
• 8.  Available with provision for seal weld.

Product Range of A105 Gate Valve

• Body material: A105
• Nominal diameter:1/2″～2.5″
• Pressure range: Class150～2500
• End connection: RF, RTJ, BW, NPT, SW
• Working temperature:-29℃～+560℃
• Mode of operation: Handwheel, Electric Actuator, Pneumatic Actuator, etc.

CV & Weight of A105 Gate Valve

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What is A105 Gate Valve?

ASTM A105 Valves are made up of a special chemical composition that can be used to make valves of ASME B16.34 and B16.10 face-to-face dimensions. The material has carbon, manganese, phosphorus, sulfur, silicon, copper, nickel, chromium, molybdenum, and vanadium in it. The ASTM A105 Gate Valves are forged material-made valves. They have excellent strength, wear and tear, and higher mechanical properties. There are different types of valves in this carbon steel material based on its structure and functions. The ASTM a105 carbon steel Swing Check Valves are structurally swinging valves. These use a swing to control the flow. The swing valves are also checked valves by functional type. They make sure that the fluid flows only in one direction.

What is ASTM A105 Material?

ASTM A105 is the standard specification covering forged carbon steel piping components for ambient- and higher-temperature service in pressure systems. It can be readily manufactured to flanges, fittings, valves, and other piping components in accordance with dimensional standards such as MSS, ASME, API, EN/BS, DIN, NOSOK specifications, etc. A105 forgings are limited to a maximum weight of 4540 kg [10000 lb]. As stated in our quality manual, welding repair of defects in ASTM A105 flanges or fittings is absolutely prohibited by Metals-Piping(although it is permissible by the standard).

Chemical Composition of ASTM A105

Note:

A : For each reduction of 0.01 % below the specified carbon maximum (0.35 %), an increase of 0.06 % in manganese above the specified maximum (1.05 %) will be permitted up to a maximum of 1.65 %. B: The sum of copper, nickel, chromium, molybdenum, and vanadium shall not exceed 1.00 %. C : The sum of chromium and molybdenum shall not exceed 0.32 %.

Mechanical Properties of ASTM A105

Note A – Determined by either the 0.2% offset method or the 0.5% extension-under-load method. Other test methods are available as listed in A105.

Heat Treatment of ASTM A105 Material

Heat treatment is not a mandatory requirement except for flanges above Class 300, flanges of special design where the design pressure or design temperature is not known, and for items over 4” NPS and above Class 300. When heat treatment is required, annealing, normalizing, normalize and tempering, normalizing and quench and tempering shall be the applied methods.

Forging

This alloy is forged at between 1,700 degrees Fahrenheit and 2,200 degrees Fahrenheit, followed by quenching and tempering.

Annealing

Forged parts are allowed to cool to below 1,000 degrees Fahrenheit before reheating to between 1,550 degrees Fahrenheit and 1,700 degrees Fahrenheit. Slow furnace cooling follows.

What is OS&Y Valve?

A105 Gate Valve is normally OS&Y Gate Valve.

OS&Y means “outside stem and yoke” or “outside screw and yoke”. OS&Y gate valves operate by opening and closing via a gate, which lowers into or rises out of the valve. Raising the gate allows water to flow through the valve while lowering the gate cuts off the water flowing through the valve.

How does an A105 Gate Valve Work?

A105 Gate valves are designed for fully open or fully closed service. They are installed in pipelines as isolating valves, and should not be used as a control or regulating valves. Operation of a gate valve is performed either clockwise to close (CTC) or clockwise to open (CTO) rotating motion of the stem. When operating the valve stem, the gate moves up or downwards on the threaded part of the stem.

Gate valves are often used when minimum pressure loss and a free bore is needed. When fully open, a typical gate valve has no obstruction in the flow path resulting in a very low-pressure loss, and this design makes it possible to use a pipe-cleaning pig. A gate valve is a multiturn valve meaning that the operation of the valve is done by means of a threaded stem. As the valve has to turn multiple times to go from the open to the closed position, the slow operation also prevents water hammer effects.

A105 gate valves are widely used for all types of applications and are suitable for both above-ground and underground installation.

Features of A105 Gate Valves

• 1. Stronger, leakproof bolted body bonnet joint ensures joint tightness with a higher bolting torque;
• 2. Wedge guiding minimizes seat rubbing and scuffing resulting in long cycle life;
• 3. Body made of superior strength forgings and optional cast steel;
• 4. Stem seal offers tight seal with little to no maintenance over long periods of time;
• 5. Optional live-loading of packing and leak off;
• 6. Non-rotating stem;
• 7. Hard-faced seating faces resist erosion;
• 8.  Available with provision for seal weld.

Product Range of A105 Gate Valve

• Body material: A105
• Nominal diameter:1/2″～2.5″
• Pressure range: Class150～2500
• End connection: RF, RTJ, BW, NPT, SW
• Working temperature:-29℃～+560℃
• Mode of operation: Handwheel, Electric Actuator, Pneumatic Actuator, etc.

CV & Weight of A105 Gate Valve

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Forged Steel Floating Ball ValveZeco’s  forging ball valve has a floating ball supported by two valve seats.

Principle: 

This kind of forging ball valve has a floating 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.

Features：

1. Simple structure with good tightness and small torque;

2. Have reduce bore type and full type with the minimum flow resistance(zero actually);

3. Low emission packing;

4. Fire safe, anti-static and anti-blow out stem design;

5. Optional locking device.

Product Range:

Body material: carbon steel, stainless steel, alloy steel

Nominal diameter:1/2″～6″（DN15~DN150）

End Connection: RF, RTJ, BW, THR, SW

Pressure range: Class150 – 2500（PN16~PN420）

Operation : wrench, worm gear, electric, etc

Brand	Zeco
Valve Type	Forged 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

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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

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Slab Through Conduit Gate ValveZeco’s slab through conduit gate valves are manufactured with a full bore port, rising stem OS&Y and with floating seats and gate, pressure energized, for a bubble tight shut off upstream and downstream under both low and high differential pressure.

Principle: 

Double block and bleed capability and automatic relief of excess body pressure are a standard feature of this seat design. The smooth, continuous bore minimizes turbulence within the valve and when in the open position it produces a pressure drop equivalent to a portion of pipe of the same length and diameter. The seat faces are outside the flow stream and therefore protected from the erosive action of the flow. Pigs and scrapers can be run through the valve without damage.

Features：

1. Seat is o-type ring and floating seat structure, make flat valve import and export seal; And the structure of the opening and closing moment for the common valve only 1/2, can achieve easily open and close the valve;

2. When full open, channel smooth to linear, flow resistance coefficient is tiny, the pressure loss, can connect cleaning line;

3. With the packing structure of sealing ability, without constant adjustment, features very light open and close and sealing is reliable, stuffing box place an assisting sealing grease injection structure, sealed performances absolutely reliable and get a true zero leakage;Solve the common valve packing place the most easily leak of evils;

4. Valve closed can automatically unloaded lumen high pressure, ensure safe operation;

5. Fully closed structure, protective performance is good, suitable for the requirements.

Product Range:

Body material: stainless steel, carbon steel, forged steel, alloy steel

Nominal diameter: 1/2″～48″

Pressure range:Class150～1500

End connection: FF, RF, RTJ, BW

Working temperature:-196℃～593℃

Operation: Handwheel, Gear Box, Electric Actuator, etc.

 

Brand	Zeco
Valve Type	Slab Through Conduit Gate 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

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What is Carbon Steel Material?

Carbon steel is an iron-carbon alloy, which contains up to 2.1 wt.% carbon. For carbon steels, there is no minimum specified content of other alloying elements, however, they often contain manganese. The maximum manganese, silicon, and copper content should be less than 1.65 wt.%, 0.6 wt.% and 0.6 wt.%, respectively.

Carbon steel is used at higher temperatures, or concern with thermal or mechanical shock is an issue, which makes them popular in the oil and petrochemical industries.

Structure of Carbon Steel Globe Valve

Body and bonnets are high-quality cast and afterward precisely machined, directing the attention to prevent stress concentration. Bonnets are made either of one piece only-the yoke then being an integral part of it-or have two pieces, depending on the size of the globe valve. This ensures the perfect alignment with the body which leads to an accurate opening and closing. Bodies of globe valves are designed considering the same characteristics as gate valves, which in this case means that the disc is guided in bigger valve sizes or high-pressure service in order to avoid vibrations and a better seat. The design of the body-bonnet gasket varies depending on the class of the globe valve. Class 150 to 600 globe valves consist of a circular male-female connection with a graphite or spiral wound gasket. Class 900 and above globe valves consist of a ring-type joint.

In pressure seal designs the sealing is achieved through a gasket that takes advantage of the internal pressure of the line. The material most commonly used is high-purity graphite located between the body and the body retainer ring.

Product Range of Carbon Steel Globe Valve

• Body material: stainless steel, carbon steel, forged steel, alloy steel
• Nominal diameter: 1/2″～24″
• Pressure range: Class150～2500
• End connection: RF, RTJ, BW
• Working temperature:-29℃～560℃
• Operation: Handwheel, Gear Box, Electric Actuator, etc.

Specifications of Carbon Steel Globe Valve

• Face-to-face standard: ASME B16.10
• Flange dimensions: ASME B16.5
• Design: ASME B16.34 / BS1873
• Test: API 598

Features of Carbon Steel Globe Valve

• Well-designed bodies minimizing turbulence and flow losses;
• The back seating arrangement permits replacement of packing while the Valve is in fully open position and it is available in two different disc designs ON/OFF type and Flow control type;
• To ensure trouble-free performance, seating surfaces are accurately machined and perfectly lapped;
• Optional Locking Device or Stem Extension Pressure seal bonnet;
• Optional Direct Mounting to ISO 5211.

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Cast Steel Trunnion Ball Valve

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What is Trunnion Ball Valve?

Specifications of Forged Steel Trunnion Ball Valve

1. Certification: ISO9001, API6D, CE, TS
2. Size: 2″-56″
3. Pressure: Class 150LB-2500LB
4. Material: A105, LF2, F11, F22, F5, F304, F316, F304L, F316L
5. Guarantee: 12months
6. Suitable medium: water, oil, gas
7. Design and Manufacture: API6D, ASME B 16.34, BS5351
8. Inspection and Test: API598
9. End flange dimension: ASME B16.5 (for NPS≤24); AMSE B16.47 series B
10. Socket-weld dimension: ASME B16.11
11. Face to face and end to end: ASME B 16.10
12. Pressure/temperature rating: ASME B16.34

Working Principle of Forged Steel Trunnion Mounted Ball Valve

Features of Forged Trunnion Ball Valve

• 1. Simple structure with good sealing performance and small torque;
• 2. Full bore and reduced bore design with the minimum flow resistance (zero actually);
• 3. Emergency sealant injection;
• 4. Independent ball and stem；
• 5. Low emission packing；
• 6. Fire safe, anti-static, and anti-blowout stem design；
• 7. Cavity pressure self-relief；
• 8. Optional extended bonnet。

Shipping Information of Forged Steel Trunnion Ball Valve

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