HY-GRADE

HY-GRADE offers a full line of check valves that are used in a wide range
of applications for industries such as Oil & Gas, Pulp & Paper, Chemical,
Petrochemical, Refining, Mining, Marine and Power.

The patented design of the standard HY-GRADE check valve assures positive shut off under fire conditions and is certified to API 6FA and 6FD. Both soft seated and metal seated HY-GRADE check valves were tested by accredited independent laboratories at temperatures to 1200-1800° F and pressures up to 3750 psi. All the HY-GRADE check valves tested passed the external and internal leakage requirements.

The API Fire tests also demonstrated that HY-GRADE check valves provide a positive shutoff after the removal of the resilient seating material as required by U.S. Coast Guard Category "A" and "Positive Shutoff" valves.

 


Wafer pattern check valve
 

Manufactured to:


API Std. 594

Sizes:

1" - 48"

Classes:

ANSI 150 - 2500
API 3,000 - 10,000

 

Optional Features:

Non-Spring Assisted (Tilt Seat)
Severe Service
Extended Face-to-Face
NACE MR01-75

 


Solid Lug Pattern
 
Threaded or Thru Holes
Double Flanged

Manufactured to:


API Std. 594

Sizes:

1" - 36"

Classes:

ANSI 150 - 2500
API 3,000 - 10,000

 

Optional Features:

Non-Spring Assisted (Tilt Seat)
Severe Service
Extended Face-to-Face
NACE MR01-75

 


Swing Check Valve
 

Manufactured to:


ANSI B16.10 Face-to-Face

Sizes:

1" - 16"

Classes:

ANSI 150 - 2500

 

Optional Features:

Non-Spring Assisted (Tilt Seat)
Severe Service
Extended Face-to-Face
NACE MR01-75


Buttwelding & Hub Ended
 

Sizes:

1" - 36"

Classes:

ANSI 150 - 2500
API 3,000 - 10,000

 

Optional Features:

Full Flow - Full Opening
NACE MR01-75

 


Plastic Bodies Check Valve
 

Combination of Plastics and Alloys for maximum performance under corrosive conditions)

Sizes:

1" - 12"

 

Optional Features:

Non-Spring Assisted (Tilt Seat)

 

Material Availability:

Plastic Body: Teflon®, Kynar®, UHMWPE
Disc and Spring: Hastelloy® C, C-22, B, Titanium, Zirconium


Full Open/Full Open Wafer
 
Capable of Passing Pings, Scaper or Spheres
Suitable for Sub-Sea Service

Sizes:

3" - 36"

 

Classes:

ANSI 150 - 2500
API 3,000 - 10,000

 

Optional Features:

NACE MR01-75
External Lockout Lever


High Performance Check Valves

  • Dual Plate Design.

  • Manufacturing to API Std. 594.

  • Integral Shaft and Disc Design with NO Hinge or Stop Pins.

  • The Discs Swing Out of the Flow Stream Resulting in High Flow Capacities and Low Pressure Drops.

  • Renewable Seats for Low Cost and Easy Maintenance.

  • Each Disc has an Independent Spring for Instant Non-Slam Operation.

  • The Springs are Shielded from the Flow Stream for Improved Service.

  • Retainerless Design with No External Holes or Leak Points for Zero Fugitive Emissions.

Available in the Following Sizes and Classes:

ANSI 150-600#
ANSI 900#
ANSI 1500-2500#
API 5,000 & 10,000

16" and up
14" and up
2" and up
2-1/16" and up

Special materials are available in sizes 2" and up in all classes.