pneumatic automatic shut-off valve cast iron cast steel cast
stainless steel pneumatic emergency shut-off valve
|Standard or Nonstandard:||Standard||Structure:||Control||Pressure:||Medium Pressure|
|Power:||Pneumatic||Material:||Casting||Temperature of Media:||Medium Temperature|
|Port Size:||DN25-300||Place of Origin:||China (Mainland)||Brand Name:||PSV-109|
|Media:||Water, Oil, Gas, etc..|
|Design features:||Product range|
| 1, normally closed state: disc hard seal pay on seat convex
platform, forming a hard seal, and embedded in the disc with soft
seal seat face tight pressure, formation of the second seal, double
quality sealing structure ensures zero leakage of the valve,
because the disc opened balance hole again, make the valve in the
closed and open, the disc by smaller force, also make the valve
opened and closed with a smaller torque.|
2, throttle discharge state: disc sealing pay leave the seat,
because in the disc has a balance hole, make very light valve
opens. After the valve opens, medium, the impurity in the pipeline
flow through the valve cover, valve seat, at the same time realize
the throttling and sewage. Disc and seat sealing surface using the
set of mat to the flow direction of medium Angle change, have self
cleaning function, make the seal can't pay with impurities.
3, closed: discharge after close the valve by the media in pipeline
medium from the set of access to the seat cushion Angle, flow
resistance coefficient increases, the flow speed, flow direction of
medium Angle change direction, produce eddy current, the seat face
medium radial force increase, realize the hermetical seat purging.
Disc sealing pay close to the seat, the set of cushion and seat
channel fit clearance flow direction of medium to prevent larger
particles seal pay, combined with the further increase of flow
velocity and transverse force of purging medium, the valve closing
seal pay has completely clean of impurities, ensure the sealing
performance of valve after discharge, thus further ensure drainage
after sealing can achieve without leakage. Thus greatly improving
the ability and prolong the service life.
2,Working medium: water, gas and oil
4,Pipe thread: ISO228 standard
| 1, this valve is a new type of throttling, globe, emptying the
throttle valve adopts the cage fan legion, a multistage throttle
effect, throttling effect, reliable sealing, convenient operation
and maintenance, etc.|
2, valve adopts double seal (hard and soft seal) can make the
sealing is reliable, hard alloy cover more air flow scouring
resistance, wear resistance, double seal can achieve zero leakage
in high pressure gas medium conditions. The valve long service
The 3, valve seat sealing surface taper sealing and dirt on the
surface of the valve itself clean attached to the seal.
4, the balance was installed on the disc of the valve hole, piston
seal, to ensure the full differential pressure stability under the
condition of opening/closing operation, flexible and convenient
open open-close torque is small.
5, filler used with the sealing ability of v-shaped packing
structure, without adjustment, features very light open and close.
An auxiliary sealing grease injection structure is set in the
packing, the packing seal valve performance is reliable.
6, this valve can be on-line maintenance, replacement of packing
line can take pressure condition and a series of wearing parts.
7, this valve at the bottom of the valve set up large drainage
hole, when it is necessary to open, clean up dirt in the valve.
8, drain valve disc of cylindrical high place with o ring, when
opening/closing, since the cleaning function and sealing drainage
when have the function of throttling depressurization.
The material of valve body: cast iron, cast steel, cast stainless
steel and so on.
Pressure grade: 1.6Mpa, 4.0Mpa, 6.4Mpa
Connecting type: flange coupling
Temperature range: normal temperature -20---230º
the thermal slug type -60---450º
Operation form: positive acting (air-to-close) or negative acting
Flow characteristic: equal percentage, linearity
Leakage: single-base valve: 0.01* rating Kv
double-base valve, sleeve valve: 0.5%* rating Kv
1.All products will be well packed before shipping.
2.All products have 12 months warranty and we sure the products
will free from maintenance within warranty period.
3.Reply your inquiry in 24 working hours.
4.Customized design is available.
5.Exclusive and unique solution can be provided to our customer by
our well-trained and professional engineers.
6.As an honest seller,we always use high quality material,advanced
machines,skilled technicians to ensure quality.
7.Have our owm engineer team,each machine is design as customer's
specfic requirement,the performance is higher 20%~40% than other
factory with same cost.