Gate valve - Fig. 97 | Comeval | Philippopoulos s.a.
Gate valve - Fig. 97 | Comeval | Philippopoulos s.a.

Gate valve - Fig. 97 | Comeval

Comeval Gate Valve Fig. 97

The Comeval Fig. 97 is a forged steel gate valve with metal seats designed for flow isolation in small diameters, high pressure, and industrial process networks. It features linear motion, bidirectional flow, OS&Y rising stem, solid wedge, and bolted bonnet. It is intended for on/off service and is not recommended for throttling.

Technical Specifications

  • Design: API 602
  • Pressure Class: ANSI Class 800 and Class 1500
  • Sizes: DN10–DN50 / 3/8"–2"
  • Ends: NPT per ASME B1.20.1, BSP per ISO 228-1, BSPT per ISO 7-1, socket weld per ASME B16.11
  • Testing: API 598
  • Marking: MSS SP-25
  • Pressure/Temperature Rating: ASME B16.34
  • Operation: Handwheel, with gear or actuator options available.

Materials and Sealing

Available in ASTM A105N, A350 LF2, A182 F11/F22, F304/F304L, F316/F316L, and duplex F51/F53. Trims include A276 410, 304, 316, or duplex, with hard-faced surface options for increased wear resistance on seats. Stem sealing is achieved with flexible graphite packing; options include bellows seal, extended bonnet, and limit switches.

Applications

Suitable for steam, HTF, compressed air, gases, lubricant circuits, auxiliary networks in power plants, chemical installations, and oil & gas service. Compatibility should be verified concerning fluid, temperature, corrosion, body material, trim, and packing.

Difference from Fig. 96

Fig. 97 covers Class 800/1500. For Class 2500, Fig. 96 of the same forged series is used. Selection is based on design pressure, temperature, end connection, and piping specification.

FAQ

Is it used for throttling?
No. A partially open position can cause erosion on seats and wedge.

When is socket weld selected?
In higher pressure, thermal cycles, or when threaded connection is not acceptable.

What is checked for stem leakage?
The condition and tightness of the graphite packing, without overloading the gland.

Standard (Options)
  • ANSI
Connection (Options)
  • BSP
  • NPT
  • Socket Weld
  • ISO 7 Rp
  • ISO 228-1
Material (Options)
  • ASTM A105N
  • ASTM A182 F304
  • ASTM A182 F316
  • ASTM A182 F11
  • 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

Metal seated gate valves, bidirectional, for stopping the flow in process, power and oil&gas applications. The atmospheric sealing is achieved by flexible graphite rings or by bellows. Operated by handwheel, gear or actuator.

Specification of the range:

Several design combinations by configuration, materials of construction and trims, end connections (flanged, BW, SW, threads), nominal size range (DN10-DN50 / 3/8"-2"), design pressure range (PN16-420 / ANSI Class 150-2500), as well as operation style and accessories.

Other typical denominations:

Applications: HVAC, lubrication, steam, gases, compressed air, process, HTF, etc.

Certifications: Comeval ped module h certificate of conformity, Eac certification 032, Eac declaration 010, Eac declaration 032, Gate valves declaration of conformity, Gate valves declaration of conformity atex

Certificates

Comeval ped module h certificate of conformity 

Eac certification 032 

Eac declaration 010 

Eac declaration 032 

Globe valves declaration of conformity 

Globe valves declaration of conformity atex