Body Material Code 
 Pressure rating code 
 Sealing surface material code 
 Structural characteristics of code 
 Structural form 
 Connection type 
 Drive letter 
 Valve type code 
 Special requirement code 
 Series Code 


 ● Series Code: SW of the Company series, code-named 
 ● Special requirement code: K-type anti-sulfur 
 ● Valve type code: Z-gate 
 ● drive code: 4 - Spur gear transmission 5 - bevel gear drive 9 - Electric 9B-proof electric (hand-wheel driving omitted) 
 ● Connection type code: 4 - flange connection 6 - welded connections 
 ● structural form: 7 - dark bar parallel single-gate 
 ● structural features Code: W-no diversion hole (parallel double) 
 ● sealing surface material code: F-PTFE 
 ● Pressure Level Code: 10 times nominal pressure MPa, the actual number of pounds of Class 
 ● Body material code: C-WCB P-CF8, ZG1Cr18Ni9Ti R-CF8M, ZG1Cr18Ni12Mo2Ti 

 Example 1: SWZ47F-10C 
 Note: The nominal pressure 1.0MPa, spur gear drive, flange connection, a diversion holes, dark bar parallel single-gate valve, valve body material for the WCB, the sealing surface is made of PTFE. 
 Example 2: SW (K) Z67F-16C 
 Note: The nominal pressure 1.6MPa, manual, welded connection, a diversion holes, dark bar parallel anti-sulfur single gate valve, valve body material for the WCB, the sealing surface is made of PTFE. 
 . 

 Characteristics of the product structure 
 ● Body by casting structure. 

 ● seat with O-ring seal and preload the floating seat structure, import and export of two-way sealing the valve; and that the structure of the normal valve opening and closing torque is only 1 / 2, can reach 
 To easily open and close the valve. 
 ● seat sealed surface mounted PTFE, with PTFE to metal and metal to metal double seal, PTFE sealing surface dirt while the role of gate clearance. 
 ● valve gate, whether it is fully open or fully closed always coincide with the sealing surface, sealing surface to be protected from direct scouring the media, thus prolonging the service life. 
 ● valve fully open, the channel smooth straight line, flow resistance coefficient is extremely small, no pressure loss, can pass the ball clean wool pipeline. 
 ● Remove the valve closes automatically when the chamber pressure (see diagram), to ensure safety. 
 ● The opening and closing instructions enclosed gears institutions clearly reflect the long-term situation of the valve opening and closing. 
 ● the outer surface of the valve buried coal tar epoxy anti-corrosion treatment, the same life with the pipeline. 

 Product Performance Specification 



 Pressure rating 
 Room temperature test pressure (MPa) 
 Suitable temperature 
 For media 

 Shell test 
 Left sealed 
 Right Seal 
 Low-pressure gas seals 
 Ordinary 
 Sulfur-type 

 Nominal 

 (MPa) (PN) 
 1.6 2.4 1.76 1.76 0.6 -29 ~ 121 ℃, or according to user requirements 
 Oil, gas, water and other non-corrosive media 
 Containing H2S, Co2 oil, gas, water and other corrosive media 

 0.6 2.5 3.75 2.75 2.75 
 4.0 6.0 4.4 4.4 0.6 
 7.04 7.04 0.6 6.4 9.6 
 Pound (Lb) (Class) 150 3.0 2.2 2.2 0.6 
 300 7.5 5.5 5.5 0.6 

 Work 



 1, a considerable internal pressure when the valve (1), the gate is closed, the valve seat surface, the formation of the initial PTFE seal rings, each valve open or closed, the valve seat ring can clean both sides of the gate (as shown in Figure 1) 

 2, management of pressure exerted on the valve (2), the pressure acting on the gate, forcing it to close on the export of PTFE seat ring, compress it until it stopped at the steel gate valve seat, so that to form a double seal First, PTFE to metal seal, and then the metal to metal seal firmly seat was picked up groove, at this point (3), O-ring to prevent any back of the media stream. (Figure 2) 

 3, after the pressure relief valve, metal seal, pressure pipe imported seat (4), to move the gate, then the formation of PTFE to metal seal at the same time, O-ring (5) and valve Block form a tight seal groove. (Figure 3) 

 4, the excess pressure relief valve automatically when the valve pressure is greater than the pipeline pressure, due to thermal expansion, import seat into the groove, the valve body of excess pressure in the valve seat and gate leakage into the pipe between the . (Figure 4) 






 Product main parameters 

 Basic model SWZ47F, SWZ67F, SWZ447F, SWZ467F, SWZ547F, SWZ567F, SWZ9B47F, SWZ9B67F 
 Pressure levels range PN0.6 ~ 6.4MPa (Class150 ~ 900) 
 Diameter range of DN25 ~ 1000mm (1 "~ 40") 
 Hand-wheel drive drive 
 Gear, pneumatic, hydraulic, electric 

 Scope of Class 150 ~ 300 
 (PN1.6 ~ 4.0)