Installation, Operation and Maintenance Manual
󲷇H-A069-E󲷈 Ball Valve Type2121α Pneumatic Actuated Type AR 15-50mm (1/2”-2”) 10
Flanged end
(PVC, C-PVC, PP, PVDF)
- Use flat faced flanges for connection to AV Valves.
- Ensure that the mating flanges are of the same standards.
- Be sure to use sealing gaskets (AV Gasket), bolts, nuts, and washers and tighten them to
specified torques. (When a non-AV gasket is used, a different tightening torque instruction
should be followed.)
Torque wrench AV gasket
Procedure
1) Set the AV gasket between the flanges.
2) Insert washers and bolts from the pipe side, insert washers and nuts from the valve side, then temporarily
tighten by hand.
- The parallelism and axial misalignment of the flange surface should be under the values
shown in the following table to prevent damage the valve. (A failure to observe them can
cause destruction due to stress application to the pipe.)
Unit : mm {inch}
Nominal size axial
misalignment
parallelism
(a-b)
15󲽛32mm (½”-1¼”) 1.0 {0.04} 0.5 {0.02}
40, 50mm (1½”, 2”) 1.0 {0.04} 0.8 {0.03}
3) Tighten the bolts and nuts gradually with a torque wrench to the specified torque level in a diagonal
manner.
4) Tighten it more than 2 turns clockwise with specified torque.
- Do not tighten above the specified torque value. (The valve can be damaged or leaks.)
Specified torque value Unit :N-mkgf-cm󲽚[lb-inch]
AV gasket
material
15, 20mm
(½”, ¾”)
25-40mm
(1”-1½”)
50mm
(2”)
PTFE coted
PVDF coted 17.5 {179} [155] 20.0 {204} [177] 22.5 {230} [200]
Rubber 8.0 {82} [71] 20.0 {204} [177] 22.5 {230} [200]
When Union nut is loosened or removed, please install in
the following way.
1) Make sure that the O-ring (A) is mounted.
2) Set the End connector directly on the body without allowing
the O-ring (A) to come off.
3) Tighten Union nut on each valve until hand tight.
4) Using a strap wrench tighten Union nuts uniformly on each
side approx. 90°- 180°turns, 1/4 to 1/2 turns.
Necessary items
O-ring (A)
Ca󲘢󲘡i󲘜󲘛
Axial misalignment)(Parallelism
b
a
Ca󲘢󲘡i󲘜󲘛
Ca󲘢󲘡i󲘜󲘛
Terms of Use | Privacy Policy | DMCA Policy
2006-2021 Rsmanuals.com