brass tube fitting

Water meter type with stainless steel needle valve including seat, the seat with inlet opening, the control of drainage holes and vertical hole, hole at the top of the inlet opening and control through, to control the hole with the valve stem, the stem is the top of the cone, to control the hole with partition steps, with the top of the stem and the partition steps on tight control hole after partition, the drainage holes hole connected with partition the steps at the bottom of the control, the valve stem has a ring in the middle of salient, in the brass tube fitting central control hole with internal thread, the threaded connection and control hole, annular salient with wrench hole in the bottom end of the stem, at the bottom of the stem and control the hole between the sealing device. This product is significant effect, small size, compact structure, suitable for which has the function of pressure meter, water flow through the inlet opening and drainage holes in and out, the valve stem flow control; Stem is located in the seat internal, where, by wrench on the surface of the stem bottom hole rotate the valve stem.
Stainless steel needle valve body, valve stem, valve core and operation hand wheel; On the valve body through the valve cavity channel is open, mounted on the lower end of the valve stem, valve core in the valve cavity, and correspond to channel; In operation on the lower end of the handwheel hollow transmission nut, the top of the stem through the drive nut cavity and operation of the handwheel and equipped with limit nut, transmission nut and installed in the valve body (stem nut thread is linked together, and the lower end of the driving nut on the valve stem in the middle of convex platform. Work by turning the handwheel operation, drive transmission nut rotation together, make the drive nut for spiral up/down movement, so as to make the valve stem has been ascending/descending, the valve core of the bottom of the valve stem conduction/blocking channels, open/closed the needle type. This product due to the work, the valve stem and valve core is not with the hand wheel rotation operation and rotation, which reduces the mechanical wear and tear, improve the service life of the valve and working reliability.
Instrument type stainless steel needle valve consists of body, the body of the product set with valve cavity, the product of the cavity with the valve plug, the product of the position with the valve plug under the bonnet, bonnet center vertical valve plug hole is set, the product of the valve plug hole top set has connection slot, slot connection slot for steps, connecting slot 38 tube fitting filling packing with sales, product packing set packing mat, above the product packing mat set above the gland, the vertical center product packing gland is set on the valve plug, three panel structure type stainless steel needle valve after sealing function failure, will only produce leakage first, will not affect valve pressure ability, prevent the occurrence of leakage, to the greatest extent to ensure the scene of the surrounding environment and the safety of the staff.