General requirements for valve installation:

(1) The valve should be located in an accessible, easy to operate, maintain the place. Valves on a row of pipes (such as pipes leading to and from the installation) should be centrally located and considered to be equipped with operating platforms and ladders. Parallel arrangement of valves on the pipeline, the centerline should try to get together. The clearance between the handwheel should not be less than 100mm, in order to reduce the pipe spacing, the valve can be staggered layout.

(2) Partition valve equipment, when conditions permit should be directly connected with the device nozzle, or as close to the device. This system pressure test can test more pipes, maintenance can also remove (or separate) equipment without affecting the system.

(3) Accident handling valves, such as fire-fighting water valves, fire-fighting steam valves, etc., should be decentralized and take into account safe operation at the time of the accident. This type of valve to be arranged in the control room, behind the safety wall, the plant door, or with the accident at a safe distance between the zone, so that a fire accident, the operator can safely operate.

(4) Valves on the bottom of equipment such as towers, reactors, vertical vessels, etc. shall not be arranged in the skirt.

(5) branch pipe from the main pipe, usually close to the root and the horizontal pipe segment is set on the shut-off valve.

(6) lifting check valve should be installed in the horizontal pipe, vertical lifting check valve can be installed in the pipe flow from the bottom of the vertical pipe. Swing check valve should be installed on the level of priority pipeline, can also be installed in the pipe flow from the bottom of the vertical pipeline. The bottom valve should be mounted on the riser end of the suction pipe of the centrifugal pump.

(7) The center of the hand wheel of the valve arranged around the operating platform should not be more than 450mm away from the edge of the operating platform. When the valve stem and handwheel extend above the platform and the height is less than 2 meters, it shall be so as not to affect the operation and operation of the operator .

(8) The valve of the underground pipe should be located in the pipe ditch or valve well, if necessary, should set the valve extension rod. Fire water valve wells should have obvious signs.

Valve is the most appropriate installation height is about 1.2 meters from the operating surface.

Horizontal pipe on the valve stem direction can be determined in the following order: vertical upward. Level. Tilt up 45 °. Tilt down 45 °. Avoid vertical downward.

Horizontal rod valve installation, when the valve is opened, the valve stem shall not affect traffic

U Type Radiant Tube

Characteristics of centrifugal casting of alloy furnace tube:

1, depending on the directional solidification from the outside of the contact with the mold, the quality of extremely dense without casting shrinkage cavity and foreign body clamping is obtained.

2. Central control cylindrical products with uniform thickness can be obtained due to centrifugal force.

3. As there are no factors affecting solidification and shrinkage, products with low casting stress can be obtained.

4. Due to the dense structure and developed columnar crystal of centrifugal casting, it has good oxidation resistance at high temperature, anti-carburization and high temperature strength.

5. It can work continuously for a long time under the temperature of 800-12000c and pressure of 3-4mpa.

Our company can produce various specifications of alloy furnace tubes (ø56-ø1200mm) according to the needs of customers, and the length of the tube section is 3-5m.

U Type Radiant Tube,Alloy Radiant Tube,Centrifuge Casting Radiant Tube,Stainless Steel U Type Radiant Tube

Jiangsu Huaye Special Steel Manufacturing Co., Ltd. , https://www.huayecasting.com