Ansi forged swing check valves extract catalog api din - Fig. 39 | Comeval | Philippopoulos s.a.
Ansi forged swing check valves extract catalog api din - Fig. 39 | Comeval | Philippopoulos s.a.

Ansi forged swing check valves extract catalog api din - Fig. 39 | Comeval

Comeval UNIFLOW Fig. 39 – Forged Swing Check Valve

The Comeval Fig. 39 is a forged swing check valve with a hinged disc and metal seat, designed to prevent reverse flow in small-bore pipelines. Operation is automatic, actuated by process flow without external actuators. The range covers DN10–DN50 / 3/8"–2", with pressure ratings PN16–PN420 / ANSI Class 150–2500. This page details 800, 1500, and 2500 lbs options.

Connections and Materials

Available connections: BSP, NPT, Socket Weld, ISO 7 Rp, ISO 228-1. Body materials include ASTM A105N, A350 LF2, A182 F11, F22, F304, F316, F51, F53. Selection is based on temperature, design pressure, and corrosion resistance requirements.

Media and Applications

Suitable for steam, water, oil, petroleum products, natural gas, air, and compatible liquids or gases. Typical installations include auxiliary steam lines, small process lines, skids, compressed air networks, and hydrocarbon service.

Installation

Install horizontally with bonnet upwards or vertically with upward flow. Ensure clean piping, avoid mechanical loads from misalignment, and protect seat from foreign matter. Recommended distances: 6×DN downstream from pumps, elbows, or reducers and 2×DN upstream from flow disturbances.

Selection Considerations

Selection should not be based solely on NPS. Verify pressure-temperature rating, body material, trim, connection type, media, flow rate, and water hammer risk. For steam, gradual preheating and adequate condensate drainage are required.

FAQ

When is Socket Weld selected? For small-bore, higher-pressure lines where threaded connections are not preferred.
What causes seat leakage? Typically particles, disc/seat wear, or insufficient reverse closing pressure.

Standard (Options)
  • ANSI
Connection (Options)
  • BSP
  • NPT
  • Socket Weld
  • ISO 7 Rp
  • ISO 228-1
Material (Options)
  • ASTM A105N
  • ASTM A182 F11
  • ASTM A182 F304
  • ASTM A182 F316
  • ASTM A182 F22
  • ASTM A182 F51
  • ASTM A182 F53
  • ASTM A350 LF2
Pressure Rating (Options)
  • 800 lbs
  • 1500 lbs
  • 2500 lbs

Datasheet and documents

Description

Swing check valves to prevent the reverse of flow in a piping system, by means of its articulated disc, with metal seat. Wide application range by its rugged and simple design and easy maintenance.

Specification of the range:

Diverse design combinations by end connections (flanged, BW, SW, threads), materials of construction and trims, nominal size range (DN10-DN50 / 3/8"-2") and design pressure range (PN16-420 / ANSI Clase 150-2500).

Other typical denominations: Non return valves, backflow preventer

Applications: HVAC, steam, gases, compressed air, etc.

Certifications: Comeval ped module h certificate of conformity, Eac certification 032, Eac declaration 010, Eac declaration 032, Piston check valves declaration of conformity, Piston check valves declaration of confo

Certificates

Comeval ped module h certificate of conformity 

Eac certification 032 

Eac declaration 010 

Eac declaration 032 

Piston check valves declaration of conformity 

Piston check valves declaration of conformity atex 

Swing check valves declaration of conformity 

Swing check valves declaration of conformity atex