Product Model: Q641F

Body Material: WCB, 304, 316

Ball Material: WCB, 304, 316+STL / Tungsten Carbide 

Seat Material: 304, 316, 316L+STL / Tungsten Carbide

Connection Type: Flanged

Flange Standard: GB, DIN, JIS, ANSI

Pressure Rating: PN16, PN25, PN40, PN64

Pneumatic Actuator: Double-acting, Single-acting normally closed (NC), Single-acting normally open (NO)

Pneumatic Accessories: Solenoid valve, Air filter regulator, Electro-pneumatic positioner, Handwheel.

Standard Technical Parameters

Valve Body

• Nominal Diameter: DN20–DN250

• Body Material: WCB, 304, 316, 316L

• Connection Type: Flanged

• Pressure Rating: PN1.6–4.0 MPa

• Structural Type: Floating ball core

Valve Internals

• Seat Seal: 304, 316, 316L+STL / Tungsten Carbide

• Ball Material: 304, 316, 316L+STL / Tungsten Carbide

• Stem Material: 304

• Applicable Media: Water, oil, steam, etc.

Performance

• Straight-through design, low flow resistance, low pressure drop.

• Anti-blow-out stem design, safe and reliable operation.

• Anti-blow-out stem design (Note: Redundant in original).

• The sealing surface and ball surface can be spray-welded or treated with Tungsten Carbide.

• Allowable pressure differential: less than nominal pressure 1.6 MPa.

• Leakage: Zero leakage.

• Hysteresis: ±2.5%.

Pneumatic Actuator

• Double-acting: Air to open, air to close; stays in current position on air failure.

• Single-acting air-to-open (Spring-to-close): Air to open, spring to close; closes on air failure.

• Single-acting air-to-close (Spring-to-open): Air to close, spring to open; opens on air failure.

• Optional Accessories: Solenoid valve, Limit switch, Air filter regulator, Electro-pneumatic positioner, Handwheel mechanism, Lock-up valve. Explosion-proof electrical parts are available.