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2" PVC/EPDM Flanged T-21 Ball Valve
Unit of Measure

Specifications

Standard

 N/A ANSI

Size

 N/A 2in (50mm)

Material

 N/A PVC

Class

 N/A 150

Schedule

 N/A 80

Cv Coefficient

 N/A 190

End Size

 N/A 2

Second End Type

 N/A Flanged

Second End Size

 N/A 2

End Type

 N/A Flanged

Elastomer

 N/A EPDM

Dimensions

Length (L)

 N/A 9.21 in

Height (H)

 N/A 4.04 in

H1

 N/A 2.60 in

S1

 N/A 1.18 in

S2

 N/A 0.35 in

D1

 N/A 4.96 in

A

 N/A 6.26 in

t

 N/A 0.63 in

C

 N/A 4.75 in

D

 N/A 6.00 in

h

 N/A 0.75 in

n

 N/A 4

Options

N/A

  • Pneumatic and electric actuators and accessories
  • Stem extensions
  • 2" square operating nut or "T" nut
  • Locking and/or spring return handles
  • Limit switches
  • Vented ball

Sample Specification

N/A All Type-21/21A ball valves, sizes 1/2” to 4”, shall be of true union design with two-way blocking capability. All O-rings shall be EPDM or FKM with PTFE seats. PTFE seats shall have elastomeric backing cushion of the same material as the valve seals. Stem shall have double O-rings and be of blowoutproof design. The valve handle shall double as carrier removal and/or tightening tool. ISO mounting pad shall be integrally molded to valve body for actuation. PVC conforming to ASTM D1784 Cell Classification 12454A, CPVC conforming to ASTM D1784 Cell Classification 23567-A, PP conforming to ASTM D4101 Cell Classification PP0210B67272 and PVDF conforming to ASTM D3222 Cell Classification Type II. The ball valves, except PP, shall have a pressure rating of 230psi for sizes 1/2” to 3” and 150psi for 4” (150psi for PP, all sizes) at 70º F. Type-21/21A ball valves must carry a two year guarantee, as manufactured by Asahi/America, Inc.

Troubleshooting

N/A What if fluid leaks when valve is fully closed?
1. Carrier is not properly tightened. Tighten it.
2. PTFE seat is damaged or worn. Replace seat.
3. Foreign material is caught between ball and PTFE seat. Remove material and clean.
4. Ball is damaged or worn. Change ball.
What if fluid leaks outside of valve?
1. Union nut not properly tightened. Retighten.
2. Carrier is not properly tightened. Thread it in firmly.
3. Carrier or face O-ring is damaged, worn, or missing. Replace O-ring.
What if handle does not rotate smoothly?
1. Foreign material has formed on the ball or seat. Clean both.
2. Internal part(s) chemically attacked or swollen. Refer to Asahi/America Chemical Resistance Chart for compatibility. Replace part(s) as required.
3. Carrier overtightened. Retighten properly.
What if handle rotates too freely?
1. Stem is damaged. Replace stem.
2. Handle is not engaged with stem. Disassemble and reengage. Inspect.
3. Engaging part of stem and/or ball is damaged. Change stem and/or ball.

Notes

N/A The shape and appearance of assembly differ a little with nominal size compared to this drawing.

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