الوصف

Standard:
Design standard conform to: MSS SP**7, API**9, EN**3
Connection flange conform to: DIN PN*0/*6/*5, ANSI B*6.1, BS***4, ISO PN*0/*6,
JIS B***2/***3, BS *0 Table D, BS *0 Table E
Top flange conform to: ISO ***1
Face to face conform to: API**9, ISO***2 series *0, BS***5
Test standard conform to: API**8

Design characters:
1. Rubber backed seat with stable valve torque.
2. Grooved sleeve design to achieve stable positioning.
3. Simple construction, small in size, light in weight. Easy disassembling, installation and maintenance.
4. Minimized operating torque. Lever, gear, pneumatic and electric actuators can be chosen.
5. Special design, high flow rate and low flow resistance.
6. Suitable medium: water, sewage, sea water, air, steam, food, medicament, oils, acids, alkalis, salts etc. No leakage under the rated pressure.

Performance:
Nominal Diameter: Non-backed:  DN**-DN**0
                    Backed:  DN**-DN**0
                             DN***-DN***0
Nominal Pressure PN (MPa):
  1.0, 1.6, 2.0, 2.5
Testing pressure (water) Ps (MPa)
      Body seat:  1.5 times rated pressure
       Seat test:  1.1 times rated pressure