Asahi Type 21 / 21a Ball Valve

Ideal applications for on/off operations include: Isolation valves, water treatment, water features, fountains, aquariums, landfills, swimming pools, power plants, mining, transportation, chemical processing.

SKU: 4.1.1

3 Year Warranty

FV

Rated for full vacuum service.

PN16

Pressure rated up to 1600 kPa.
Asahi Type-21/21a ball valves are corrosion-resistant, plastic, manual, true-union design, quarter-turn valves with hyperbolic flow characteristics, low pressure drops and reliable sealing.

They offer flow control that is used for on/off applications—typically excellent in clean fluid service applications with little-to-no suspended solids.

True-union ball valves can be lifted from a line without having to move piping, simply by loosening union nuts. Asahi type 21 ball valves can be disassembled and parts can be replaced. They can also be pneumatically or electrically actuated.

Technical Specifications

Sizes: 0.5 – 6"

Bodies: PVC, CPVC, PP & PVDF

Seats: PTFE backed with EPDM or FKM

Seals: EPDM or FKM

Certification: NSF-61 (PVC/EPDM/FKM models)

Models:
UPVC & CPVC: socket, threaded & ANSI flanged.
PP & PVDF: IPS & metric (DIN) socket, threaded, butt & ANSI flanged.

Logo for the National Sanitary Foundation

Approved for Drinking Water

Asahi Ball Valves are USA NSF / ANSI / CAN 61-G certified to protect public health by limiting harmful chemical contaminants from leaching into water, while also verifying strict "lead-free" compliance.

For variants 0.5 - 4" UPVC & CPVC / EPDM and FPM.

ABS American Bureau of Shipping Logo

Marine & Offshore Certified

Asahi Ball Valves are certified for marine systems including fresh water, potable, sea water, sanitary, drains, scuppers, vents, soundings, brine.

For variants 0.5 - 4" UPVC & CPVC / EPDM and FPM. Cert: 24-2514197-PDA-DUP
Image of an Asahi Type 21 Ball Valve Threaded End

F-NPT Threaded Ends Included

2 x socket and F-NPT ends are included. Suitable for complete Schedule 80 installations.
0 - 2" socket variants only.

PTFE Seats + Double O-Ring Stem Seals

  • Double o-ring seals on stem for added protection.
  • PTFE seats with elastomeric backing cushions ensure bubble tight shut off and a low fixed torque.
Image of the stem, ball and seats of an Asahi Type 21 Ball Valve
Top view of an image of an Asahi Type 21 ball valve with the handle removed highlighting the ISO mounting pad design for simple actuator mounting
Top

Simply Actuated

Integrally moulded ISO mounting pad suits manual and actuated operations.

Bottom view of an image of an Asahi Type 21 ball valve highlighting the ensat / threaded insert mounting option.
Bottom

Panel / Rack Mount

Comes with bottom stand to facilitate mounting.
(requires ensats / threaded inserts)

Image of a 6" Asahi Type 21 Ball Valve showing the venturied end connections

Up to 6" in Size

6" valve variants are comprised of 4" body with venturied end connections.

Accessories / Options

Image of an Asahi Type 21 Ball Valve Threaded End

BSP Threaded End (optional)

Utilising the true union ends of the Asahi Type 21, easily adapt to a BSP thread. Sold separately.

Image of an Asahi Type 21 ball valve lockable handle on a transparent background

Lockable Handle (optional)

Easily swap the standard Asahi Type 21 ball valve handle to a lockable variant.

Dimensions

Diagram of an Asahi Type 21 Ball Valve with Socket Ends

Socket Ends

Size d1 i L
0.5" 21.5 22.2 113.0
0.75" 26.9 25.4 129.0
1" 33.7 28.6 146.1
1.25" 42.4 31.8 164.1
1.5" 48.6 34.9 183.9
2" 60.6 38.1 209.0
2.5" 73.4 44.5 240.0
3" 89.3 47.6 283.0
4" - - -
Diagram of an Asahi Type 21 Ball Valve with Threaded Ends

F-BSP Ends

SizeiL
0.5"15102
0.75"17120
1"20131
1.25"22150
1.5"25163
2"28197
2.5"32215
3"35265
4"45340
Diagram of an Asahi Type 21 Ball Valve with Threaded Ends

F-NPT Ends

SizeiL
0.5"15102
0.75"17120
1"20131
1.25"22150
1.5"25163
2"28197
2.5"32215
3"35265
4"45362
Diagram of an Asahi Type 21 Ball Valve with Flanged Ends

Flanged Ends

SizetL
0.5"12143
0.75"14172
1"14187
1.25"16190
1.5"16212
2"16234
2.5"18260
3"18306
4"18374

Additional information

Weight 2.773 kg
Dimensions N/A
Size

0.5", 0.75", 1", 1.25", 1.5", 2", 2.5", 3", 4"

Materials

UPVC EPDM, UPVC FPM, CPVC EPDM, CPVC FPM

Connection

Socket, Socket / F-NPT, Flanged ANSI 150

Specifications

Download

Manual

Download

Dimensional Guide

Download

Data Sheet for Sodium Hypochlorite

Download

Data Sheet

Download

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