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

GET A105 GATE VALVE PRICE

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

The post A105 Gate Valve appeared first on ZECO Valve.

The post Pressure Seal Gate Valve appeared first on ZECO Valve.

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

The post Slab Through Conduit Gate Valve appeared first on ZECO Valve.

The post Gear Operated Gate Valve appeared first on ZECO Valve.

Features of Ductile Iron Gate Valve

  

• Visual valve switch easily;
• Quick opening and closing, light torque;
• Brass nut wear-resistant, long switch life;
• Fully covered with EPDM disc, resistant to corrosion.

Ductile Iron Gate Valve Working Principle

Turn the handwheel to open and close the valve disc connected with the stem through the thread of the handwheel and the stem.

Ductile Iron Gate Valve Installation and Commissioning

This valve is usually placed in a higher position from the ground. Pay attention to the installation space in use. When opened, the stem will rise a certain distance. For specific use, please consult ZECO Valve Group.

Ductile Iron Gate Valve Material and Standard

Size Range: 2″~24″
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

Part	Material	Standard
Body	Ductile Iron	EN 1563/DIN 1693
Bonnet	Ductile Iron	EN 1563/DIN 1693
Stem	Stainless Steel 431	EN10088-1/ASTM A959
Wedge	Ductile Iron + EPDM / NBR	EN 1563/ISO 4633
Nut	CuZn39Pb1 / C37000	EN12167/ASTM B135
Handwheel	Ductile Iron	EN 1563/DIN 1693
For the materials options not listed, consult factory. ZECO manufactures valves in more than 50 different alloys.

The post Ductile Iron Gate Valve appeared first on ZECO Valve.

Features of Metal Seated Gate Valve

• The stem is permanently sealed by three independent seals, and if the seal wears out after long use, the gland bolts only need to be tightened;
• Stem spherical stop-thrust, low friction resistance, so that the valve is light to open and close, low operating torque;
• Major stem O-ring can be replaced with pressure in the pipe;
• Epoxy resin sprayed on the inner and outer surface of the product, not easy to corrode.

Metal Seated Gate Valve Working Principle

Metal Seated gate valve vs resilient seated gate valve, Usually both can be used on the water pipeline, reilient seated gate valve more for clean water pipeline, because the granular medium will cause damage to the rubber of the gate, while the metal seated gate valve is more widely used, the hardness of the bronze seat makes in the granular medium can also be very good to achieve the sealing effect and service life will not be greatly affected. But the metal seated gate valve production cycle is longer, the use of higher costs, so the choice between the two or according to the working conditions of the media conditions and budget to choose.

Metal Seated Gate Valve Installation and Commissioning

Metal seated gate valve in the pipeline does not require frequent maintenance, depending on the time of use, the stem O-ring can be replaced periodically to reduce the possibility of leakage. For specific use, please consult Zeco Valve Group.

Metal Seated Gate Valve Material and Standard

Size Range: 2″~64″
Pressure Rating: 10bar ~ 25bar

Face to Face Dimensions: AMSE B16.10, EN558-1

Flange End Dimension: AMSE B16.5, AS4087, EN1092-2

Coating: WRAS approved Fusion Bonded Epoxy Coating

Inspection and Test: ISO 5208 / EN 12226-2

Part	Material	Standard
Body	Ductile Iron/ Cast Iron	EN 1563/DIN 1693
Bonnet	Ductile Iron/ Cast Iron	EN 1563/DIN 1693
Trim	Ductile Iron/ Cast Iron	EN 1563/DIN 1693
Seat	Bronze/Brass	ASTM B62/ ASTM B148
O-ring	EPDM / NBR	ISO 4633
For materials options not listed, consult factory. Zeco manufactures valves in more than 50 different alloys.

The post Metal Seated Gate Valve appeared first on ZECO Valve.

Features of Resilient Seated Gate Valve

  

• Full diameter flat – bottom runner, no debris pooling;
• Fully covered EPDM disc, no corrosion;
• Movable disc’s nut, adaptive offset;
• The variable pressure change O-Ring.

Resilient Seated Gate Valve Working Principle

The main seal is entirely rubber covered gate, under the action of operating force and hydraulic pressure produced a small amount of adaptive elastic deformation, and precision casting of the seating stroke excellent sealing effect.

Resilient Seated Gate Valve Installation and Commissioning

If maintenance is required, the o-ring can be replaced online directly on the pipe. When installed, pay attention to the use of temperature and corrosivity, can be used to replace rubber parts suitable for the use of temperature. For specific use, please consult ZECO Valve Group.

Resilient Seated Gate Valve Material and Standard

Size Range: 2″~48″
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

Part	Material	Standard
Body	Ductile Iron	EN 1563/DIN 1693
Bonnet	Ductile Iron	EN 1563/DIN 1693
Stem	Stainless Steel 431	EN10088-1/ASTM A959
Wedge	Ductile Iron + EPDM / NBR	EN 1563/ISO 4633
Nut	CuZn39Pb1 / C37000	EN12167/ASTM B135
Handwheel	Ductile Iron	EN 1563/DIN 1693
For the materials options not listed, consult factory. ZECO manufactures valves in more than 50 different alloys.

The post Resilient Seated Gate Valve appeared first on ZECO Valve.

Features of Knife Gate Valve

• Full bore design for high media throughput capacity;
• U-shaped gasket with good sealing effect;
• Gate plate with gate function, good shut-off effect, can effectively shut off all kinds of debris in the media, to solve the leakage phenomenon after shut-off containing lumps, particles, and fiber media;
• Able to work in dirty media, easy to install, easy to disassemble, easy to maintain, without removing the valve can replace the valve seals, making valve maintenance more simple.

Knife Gate Valve Working Principle

The wiper between the valve body and bonnet of the knife gate valve prevents solid particles from entering the bonnet. The valve body cavity, seat configuration, and slant gate design provide features to impede the entry of thick media (e.g. pulp, slurry) or solid media (e.g. granules and powders).

Knife gate valve gate and seat are always in close contact with the sealed valve, and the gate with a guide hole with the same conduit gate valve, the gate has a diameter size of a round hole, through the gate opening and closing so that the round hole on the gate and the through diameter to do a complete disengagement and coincide with the action. In addition, the advantage of the structure is that the valve body diameter without grooves, the medium will not be blocked, and has full diameter flow characteristics, suitable for the use of powder and particle media in the pipeline. Its sealing structure can be divided into a soft seal, and a hard seal structure. The sealed valve seat is designed with a movable structure, with anti-wear and automatic compensation function, thus longer life. In the process of closing and opening the valve seat and the gate plate have to be close to the movement, so that the valve opening and closing force is stable.

Knife Gate Valve Installation and Commissioning

Knife gate valve can be divided into pneumatic knife gate valve, electric knife gate valve, manual knife gate valve. According to the operation mode, Installation and operation according to the different operating instructions. For specific use, please consult Zeco Valve Group.

Knife Gate Valve Material and Standard

Size Range: 2″~48″
Pressure Rating: 10bar ~ 20bar

Face to Face Dimensions: MSS SP-81-2006

Flange End Dimension: EN1092, ASME B16.5, ASME B16.47, AS2129

Inspection and Test: MSS SP-81-2006

Part	Material	Standard
Body	GGG40/WCB/CF8/CF8M/4A	ASTM STANDARD
Bonnet	GGG40/WCB/CF8/CF8M/4A	ASTM STANDARD
Trim	GGG40/WCB/CF8/CF8M/4A	ASTM STANDARD
Seat	HARD SEAL/EPDM	ASTM STANDARD
For materials options not listed, consult factory. Zeco manufactures valves in more than 50 different alloys.

The post Knife Gate Valve appeared first on ZECO Valve.

 GET VALVE PRICE

The post High Pressure Gate Valve appeared first on ZECO Valve.

The post Cast Steel Gate Valve appeared first on ZECO Valve.