Q:Why? God, can you explain to me in detail why?

Check valve in the valve in front. To prevent water from flowing back.

Q:Gate valve z41t what does that mean?

According to the provisions of the JB/T 308-2004 valve type programming method:Z = gate valve4 = connection form: flangeT = sealing surface material: copper alloy

Q:What is the wedge type gate valve wedge is what mean

It can be used on high pressure gate valve. Wedge gate and elastic wedge gate, gate and double gate. A, elastic ram. A circular groove is machined on the vertical bisector surface of the gate so that the gate plate has a certain elasticity. It is this elastic deformation, the gate is closed, the compensation gate sealing surface and the valve seat sealing surface between the wedge angle deviation, the arrival of good agreement, to ensure the sealing. Resilient gate valve sealing surface reliable. Applicable to a variety of pressure and temperature of small and medium-sized gate valve, requiring medium containing solid particles to less, in order to prevent congestion in the gate ring groove, affecting the flexibility of sealing.

Q:Internal screw current limiting gate valve (Tan Gang) PN5.0 DN15/ Phi 1 Rc1/2 what does that mean?

We did thatInternal thread current limiting gate valve (Tan Gang)Body material: carbon steelPressure rating: PN5.0 = 300LB American StandardNominal = DN15 = 1/2"Phi 1 = in the middle of the gate drilling a Phi 1 hole, so that in closing there will be a certain flow, that is, the minimum flow, that is, the current limit.Rc1/2 is thread, which is the connection

Q:What does valve qz45x - 10q mean?

Crown valve pressWhat does Q stand for? I'm not sure. It's probably made of ductile iron"Z" means "gate valve"4 represents flange connection5 represents the dark bar (1 represents the Ming pole)X stands for rubber seal and soft seal10q stands for 10 pressure

Q:What is wire feed gate valve? What do you say in French?

Point to the wire gate valve. Refers to the valve body with internal thread or external thread, and pipe thread connection. Also called thread valves, threaded valves, valves within the toothFlange gate valve is connected to the flange gate valve, this connection is the most common wayThe main difference is the connection

Q:Gate valve z45h-10dn250 length of the body?

Z45h-10dn250 body length L=330mm, this valve is hidden bar, elastic seat, sealing gate valve, gate lining, lining fluorine, belong to soft seal

Q:What does gate valve Z44T-10-200 code mean?

The meaning of the model is standard, the landlord himself to check the JB/T308 standard, Baidu library some, and is free to download:JB/T 308-2004 valve type method of preparation clear EditionHttp://wenku.baidu /view/5f798850ad02de80d4d84036.htmlZ = gate valve4 = connection: flange4 = structure form: double gateT = sealing surface material: Copper10 = nominal pressure: 1.0MPa, followed by no letters indicate body material: Cast Iron200 = nominal path: DN200

Q:Fire protection gate valve from the wall how many distance there is no regulation?

1 meters away from the wall, leaving the maintenance and replacement distance

Q:What are the specifications of the gate valves? Does the work pressure need to be marked separately?

Gate valve code Z, such as GB gate valve Z41H-16. Front is the valve type, and the back 16 represents the pressure of 16 kg, 1.6MPa