Fig: 402 Spring Check Valve (Non-return)

Socla Fig: 402, Socla Fig: 402/402 - Double check valve.
 
Spring loaded check valve used to prevent reverse flow. Suitable for clean water applications up to 100ºC. Size range DN40-500mm, cast iron with bronze guiding system and EPDM seats.
 
Features.
  • Operates in any postion.
  • Minimum head loss.
  • Silent, reliable sealing, compact.
  • Exceptional robustness.
  • Does not generate hammering.
  • Notch provided for cable to submerged pumps until DN100.
  • Closing system: long back axial guiding for reduced displacement.
  • Sealing guaranteed by a flat seal.
  • Return spring.
Test

Seat 1.1 x PN
Body 1.5 x PN
 
Service Conditions.
  • Potable water, filtered water, dirty water.
  • Working pressure 16 bar.
  • Temperature range -10°C to 100°C.

(Insulate at 0°C and below)

Options / Offer models.
  • Double version c/w 1/2" tapped boss as standard.
  • Fig. 402/402 - Double check valve.
  • Fig. 412 - PN16  flanged.
  • Fig. 402S - PN25/40 flanges.
  • Fig. 402Z - Ali-Bronze body.
  • Fig. 402X - Stainless steel body.

Material Specification

Items
Description
Material
Standard
ANSI
1.
Casing DN40-400
DN500
Cast Iron/Epoxy
Ductile Iron/Epoxy
EN 1561
EN 1561
ASTM A 48 35 B
ASTM A 536 65-45-12
2.
O-Rings Seal DN40-250
EPDM
 
 
3.
Ring
Bronze
EN 1982
 
4.
Guide DN50
          DN40 & 60-400
          DN500
Bronze
Cast Iron/Epoxy
Ductile Iron/Epoxy
EN 1982
EN 1561
EN 1563
 
ASTM 48 35 B
ASTM A 536 65-45-12
5.
Spring
Stainless Steel
EN10270-3
AISI 302
6.
Seal
EPDM
 
 
7.
Closing System DN40
                  DN50-65
Brass
Bronze
EN12164
EN 1982
 
7-8
DN80-400 Stem
           Check-Valve
Bronze
Cast Iron/Epoxy
EN 1982
EN1561
 
ASTM A 48 35 B
7-8
DN500     Stem
             Check-Valve
Bronze
Cast Iron/Epoxy
EN 1982
EN 1563
 
ASTM A 536 65-45-12
Dimensions.
A (mm)B (mm)C (mm)D (mm)Weight (kg)
4085801504.2
50100971655.8
601201251858.1
651201251858.1
8014015020010.2
10017018722014.5
12520022025024
15023025028532
20028934034053
25035442040594
300396490460140
350473586533225
400560680597312
500750880670540

For more technical information, please see below.

Downloads

File nameTypeSize
Socla_402(1)pdf398 KB
Socla_402b_402(1)pdf341 KB