Q:I've seen a lot of hot water projects. Why do most of them use globe valves, and ball valves are seldom used?.Globe valves have those benefits compared to ball valves (because the cut-off valve is more expensive, I think it is more expensive and more useful. It must have some advantages in that respect.)Is the stop valve more durable than the ball valve?What are the specific differences between the two PPR valves?

The PPR valve is plug shaped valve, sealing surface flat or cone, fluid along the centerline of the valve for linear motion. Stem movement in the form of lifting rod (stem lifting, hand wheel not lifting), but also lifting, rotating rod type (hand wheel with the valve stem to rotate up and down, nut on the valve body). Valve is only applicable to fully open and fully closed, does not allow for adjustment and throttle.Ball valve has compact structure, reliable sealing, simple structure, easy maintenance, sealing surface and spherical often in the closed state, the media can not easily be eroded, easy operation and maintenance for water, solvents, acids, and natural gas general working media, but also applies to poor working conditions of media, such as oxygen, hydrogen peroxide methane and ethylene, etc., are widely used in various industries. Ball valve body can be integrated, or can be combination.

Q:You can connect inside the pump and valve

Pump and valve should be installed between the distance, too close, too far, will cause damage to the ball valve. The flange is usually used on the pump. Valve can be connected with a pipe with screw pipe, a head welding flange, and the flange is directly connected with the water pump. Super - Electronic Commerce

Q:Is the integral type split ball valve structurally identical?

Split type ball valve, the valve body by the main body and the cover body is composed of two parts, thread connection between the main body and the cover body is arranged at the connection of the sealing ring, an annular sealing ring and ball valve, valve rod, sealing gasket, valve stem nut, a handle, a fastening nut is arranged on the main body, there is another ring the sealing ring is arranged on the cover body, interface screw holes at both ends of the valve body are respectively processed in the main body and cover body. This structure of the ball valve, the ball cavity depth is relatively shallow, the ball cavity processing is more convenient.

Q:What does "DN25 Q41F46-16C" mean?

DN is nominal diameter, nominal diameter (or nominal diameter), that is, all kinds of pipe and pipe accessories of general diameter of 25 mm

Q:What does "ball pq340h-10c-1200" mean?

This is the worm gear eccentric hard seal hemisphere valve, 10 kilograms of pressure, caliber is 1200.

Q:How to distinguish between single and double ball valve?

Single ball valve, pneumatic ball valve is a single short; double valve, double acting pneumatic ball valve is referred to as.Single acting pneumatic ball valve is open air, spring off; and double acting pneumatic ball valve, gas gas is closed.Single / double ball valve, is divided according to the actuator, the actuator has a single pneumatic actuator and double acting pneumatic actuator.Single acting pneumatic actuator Pneumatic actuator to more than double spring, loss of gas supply, the spring to reset actuator.For hazardous media or conditions requiring a safe position when the gas source is lost, a single action is recommended.Selection must be based on the size of the field air pressure to select the spring force, otherwise it may cause air pressure is less than overcome the spring force and can not drive the actuator.When the actuator is selected, the minimum spring force should be allowed to drive the valve normally, taking into account the gradual reduction of the spring force.

Q:Under what circumstances with the butterfly valve, under what circumstances with the ball valve?

The flow control accuracy requirements are not high, the fluid pressure is small place with butterfly valve, butterfly valve is the simplest kind of valve, mainly used in regulating the air flow and powder flow!According to the pressure of the liquid and gas fluid control, flow effect, rapid opening and can completely cut off for flow with the ball!

Q:DN20 copper ball valve with large PPR converter connector

See how big your tube is. 20 tubes are straight with 20*1/2 internal teeth, and 25 tubes are straight with 25*1/2 internal teeth

Q:Daily maintenance and common maintenance of ball valves, Q347F-16C and Q41F-16C

Structural type code:Floating type: 1 means through flow, 2 indicates Y type three pass, 4 represents L type three pass, and 5 represents T type three pass;Fixed type: 0 represents the straight through of the hemisphere, the 6 represents the four channel, the 7 indicates the through flow, the 8 represents the L type three pass, and the 9 represents the Y type three pass;Sealing material: B Babbitt, fluorine rubber, F F46, H direct machining of fluorine lining, rubber lining, stainless steel J M Monel alloy, N nylon plastics, Monel P, Y alloy, W valve;Pressure rating code: 16 said the pressure of 16 kg (1.6Mpa) up to 64Mpa; 150LB said American Standard pound pressure, maximum pressure rating up to 2500LB (150LB=1.6MPA/300LB=2.5-4.0mpa/400LB=6.4mpa/600LB=10mpa); 5K said on stage pressure, the maximum pressure of 63K;Body material: A titanium and titanium alloy, C steel, I stainless steel, chrome molybdenum steel, P18-8 stainless steel, S plastic, RMo2Ti.

Q:Structure design principle of fire ball valve

5 ball valve seat structure typical fire abroad professional production company common pipeline ball valve seat structure design of typical figure 9 - 12 shows, each seat structure fireproof structure design is reasonable, to ensure the seat piston effect of the sealing ring and the valve seat seal failure, valve seat leakage way at least. Figure 9 rubber sealing seat 1 to the left to the right in Figure 10 | rubber sealing seat 2 to the left to the right | Figure 11 rubber and plastic combined sealing seat to the left to the right in Figure 12 | plastic seat to the left to the right seat | fireproof structure design reasonable, can guarantee the way upstream pressure medium through the valve seat leakage at least fire, the best performance. In the design of fireproof structure of pipeline ball valve, the fire protection structure design of valve seat should be paid more attention to. The seat of fire with reasonable structure is the fundamental guarantee of fire safety in the pipeline valve in practical engineering, reasonable assessment of structural fire protection should be strictly in accordance with the API6FA/API607 standard fire test, test samples should not be sample makers, should be the verification institution with sampling, so as to ensure the rationality of the third party authentication and notarization of.