PRODUCTS > Control valve > Pneumatic diaphragm sleeve control valve

                  Pneumatic diaphragm sleeve control valve

                  Product model:CV3000
                  Body material: WCB, 304, 316, 316L
                  Spool material: 304, 316+STL\PTFE
                  Seat material: 304, 316+STL; PTFE
                  Connection: flange, thread, welding
                  Seat form: single seat, two seat, sleeve
                  Valve cover type: standard type, low temperature type, heat dissipation type, bellows sealed type
                  Pneumatic actuator: multi spring film actuator, gas open, gas off type
                  Accessories: Electrical positioner, air filter, relief valve, hand wheel, retaining valve


                  [Standard technical parameter]

                  Body type: single seat, two seat, sleeve pneumatic film sleeve control valve

                  Nominal diameter: DN20-DN200

                  Nominal pressure: ANSI150, 300, 600LB, JIS10, 16, 20, 30, 40K, PN1.6, 2.5, 4, 6.4MPa

                  Connection: flange: FF, RF, RJ and LG

                  Flange standards: ANSI, B16.5, JIS, B2201, JB/T79.1, PN1.6MPa, JB/T79.2 thread: DIN, NPT, RC, BSP, G and other welding: GB12224-89

                  Sealing surface form: PN16 convex, PN40, PN63, PN100 concave

                  Material: WCB, 304, 316, 316L

                  Upper valve cover: standard type (-20~+200℃), low temperature type (-60~ -196℃), heat dissipation type (-40~ 450℃)

                  [Valve structure drawing]


                  [Bellows seal type]

                  Gland type: press plate type

                  Packing: V PVC, PTFE flexible graphite fluoride


                  [Valve assembly]

                  Spool form: pressure balance type

                  Spool valve seat: two seat plunger valve, metal seal, such as percentage characteristics and linear characteristics (LC)

                  Flow characteristics: equal percentage, linear, quick opening


                  [Actuating mechanism]

                  Form: multi spring film actuator

                  Action form: positive action and reaction

                  Diaphragm material: NBR rubber clip to strengthen polyester fabric

                  Spring range: 20 ~ 100KPa, 40 ~ 200KPa, 80 ~ 240KPa,

                  Air supply pressure: 0.14, 0.16, 0.28, 0.40MPa

                  [Action form]

                  Air operated FO (positive acting mechanism), when the gas source fails, the actuator spring opens the valve

                  Air operated FC (with actuator) when the gas source fails, the actuator spring closes the valve

                  Accessories (configured as required)

                  Electrical positioner, air filter relief valve, hand wheel mechanism, limit switch, solenoid valve, retaining valve and other


                  Rating KV: refer to table

                  Flow characteristics: linear, equal percentage, quick opening

                  Adjustable range: 50:1

                  Leakage level: metal seal: less than 0.01 (ANSI, B16.104-1976IV)

                  Soft seal: less than 0.00001%

                  Backlash: less than full range 1% (with locator)

                  Less than full stroke 3%-5% (without locator)

                  Basic error: less than full range + 1% (with locator)

                  Less than full journey + 5% (without locator)

                  [Valve features]
                         Pneumatic diaphragm control valve sleeve with the sleeve guide, pressure balance type double sealing surface and single seal structure, is a force balance valve, the valve has the advantages of compact structure, fluid channel was streamlined S, has the advantages of small pressure drop loss, large circulation, wide adjustable range and high precision flow characteristics. The regulating valve is equipped with a multi spring type film actuator, which has small structure, large output force, and is more suitable for dynamic stability, low noise, cavitation / flash, high and low temperature and high pressure differential fluid control.

                  [Adaptive condition]
                         Widely used in petroleum, chemical industry, gas equipment, nuclear power equipment, water treatment, air conditioning, iron and steel metallurgy, industrial furnace, filling equipment, brewing equipment, drying equipment, vacuum equipment, surface treatment, bio pharmaceutical, food machinery, textile, papermaking and other industries, the preferred product is construction of national defense construction, science and technology.

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