Product model: CV3000
Valve body material: WCB, 304, 316, 316L
Material of spool: 304, 316 + STL PTFE
Seat Material: 304, 316 + STL; PTFE
Connection mode: flange, thread, welding
Seat type: single seat, double seat, sleeve
Cover Type: Standard Type, Low Temperature Type, Heat Dissipation Type, Bellows Sealing Type
Pneumatic actuator: multi-spring thin film actuator with air-opening and air-closing
Accessories: Electrical positioner, air filter pressure relief valve, handwheel, reserve valve

Product overview

Pneumatic film sleeve control valve adopts sleeve-oriented, pressure-balanced double sealing surface and single sealing surface structure. It is a force-balanced control valve with compact body structure and S-streamlined fluid passage. It has the advantages of small pressure drop, large flow, wide adjustable range and high accuracy of flow characteristics. The control valve is equipped with multi-spring film actuator, which has small structure and large output force. It is more suitable for use under fluid control conditions requiring good dynamic stability, low noise, cavitation/flash, high and low temperature and high pressure difference.

Standard technical parameters

Valve body type: single seat, double seat, sleeve pneumatic film sleeve control valve

Nominal Path: DN20-DN200

Nominal Pressure: ANSI150, 300, 600LB JIS10, 16, 20, 30, 40K PN1.6, 2.5, 4.0, 6.4MPa

Connection mode: flange: FF, RF, RJ and LG

Flange standard: ANSI B16.5, JIS B2201 JB/T79.1 PN1.6MPa, JB/T79.2

Thread: DIN, NPT, RC, BSP, G, etc.

Welding: GB12224-89

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

Material: WCB, 304, 316, 316L

Upper cover: Standard type (-20 ~200 ~C) low temperature type (-60 ~196 ~C) heat dissipation type (-40 ~450 ~C)

Bellows sealing type

Cover Form: Plate Form

Filler: V-type fluorotetrafluoroethylene, flexible graphite

Valve components

Core Form: Pressure Balance Form

Core seat: two-seat plunger type spool, metal seal, equal percentage characteristic, linear characteristic (LC)

Flow Characteristics: Equal Percentage, Linearity, Quick Opening

Executing agency

Form: Multi-spring membrane actuator

Form of action: positive and negative

Diaphragm Material: Polyester Fabric Reinforced by NBR Clip

Spring range: 20-100KPa, 40-200KPa, 80-240KPa.

Supply pressure: 0.14, 0.16, 0.28, 0.40 MPa

Function form

Air-closed FO (Positive Acting Actuator) When the air source fails, the actuator spring opens the valve.

Air-Open FC (Reaction Actuator) When the air source fails, the actuator spring closes the valve.

Annex (Configuration as required)

Electrical positioner, air filter pressure relief valve, handwheel mechanism, limit switch, solenoid valve, reserve valve and others

Product performance

Rated KV: Reference Table

Flow characteristics: linear, equal percentage, fast opening

Adjustable range: 50:1

Leakage Class: Metal Seal: Less than 0.01 (ANSI B16.104-1976IV)

Soft seal: less than 0.00001%

Backlash: Less than 1% of total travel (with locator)

Less than 3%-5% of the total trip (without locator)

Basic error: less than (+1%) of the whole journey (with locator)

Less than +5% of the total stroke (without locator)