ElastoTITE™ Male Thread End - Series: 801

Size: 1” to 12” (Larger size available on request)
Operating Temperature: –40° F to 500° F
Pressure Rating: 150 PSI

Design Standard

Process Development & Control’s ElastoTITE™ Full Port Elastomer-Hinged Check Valves have low pressure loss, lightweight design and a compact construction. Our Patented Flexible Anti-Fatigue Reinforcement Layer design increases the life of the valve and reduces the need for replacement of the elastomer sealing member during routine maintenance. The elastomer hinge check valve design eliminates a restrictive valve seat and increases the valve’s open area and flow coefficient significantly. The ElastoTITE™ Thread End Check Valve is perfect for compressed air and gas systems, water systems and vacuum pumps

PDC’s Thread End Elastomer-Hinged Check Valve features a choice of body materials of Carbon Steel or 316 Stainless Steel. The available internals materials are Aluminum and 316 Stainless Steel. Buna-N is the standard seal with available optional seal materials of EPDM, Silicone or Viton.

Materials can be configured to a Maximum Working Pressure of 150 PSI. Operating temperatures range from –40° F to 500° F with available sizes 1” thru 12” NPT. If your application requires unique size and material configurations, please contact the factory for assistance with your special requirements.


Size Range:
1” to 12” (Larger size available on request)
–40° F to 500° F

Design Features

  • PDC’s Patented Anti-Fatigue Reinforcement Layer – Our ElastoTITE™ Check Valve’s New Patented Anti-Fatigue Reinforcement Layer is substantially unstretchable and capable of resisting abrasion forces that are encountered while the valve is in operation, increasing the life of the valve significantly.
  • Smooth Valve Bore – The smooth machined bore allows the compliant valve seal to maintain a consistent check against backflow.
  • NPT (American National Standard Tapered Pipe Thread) Body – PDC’s Male Thread End Series 801 conforms to ASME/ANSI B1.20.1 American National Standard Tapered Pipe Threads on both ends of the valve.
  • NO Metal-to-Metal Rotating Parts – The motionless Hinge Bar and Seal Clamp design decreases wear of Hinges, Shafts, Valve Plates, and Springs slashing maintenance requirements and costs.
  • Full Port Seatless Design – Provides the largest flow area possible with the smallest pressure loss.
  • Fast Closure Feature – The closing time is reduced by the valve plate’s minimum travel from an open to a fully closed position.
  • Springless Design – Our valves operate without the assistance of a spring in the majority of all applications. With the assistance of a spring, the “slamming” action of the plates is all but eliminated. A spring is recommended when the valve is placed in a vertical downward flow pipeline position
  • Reinforced Valve Seal – Tolerant to liquids, gases, steam, chemical, oil, and fuel. The strength and durability of these elastomers ensure the prolonged life of the valves. The seals provide a tight shutoff.
  • Valves can be installed in a pipeline in any position.
  • Competitive Pricing – PDC offers competitive pricing, excellent customer service and quick turnaround to meet your needs.


  1. Male Thread End Body
  2. Hinge Bar
  3. Valve Plate
  4. Anti-Fatigue layer
  5. Valve Seal
  6. Seal Retainer Plate
  7. * Seal Clamp ** Seal Clamp End
  8. Spring (Optional)
  9. Spring Shaft
  10. Travel Limiter
  11. Hinge Bar/ Travel Limiter Fasterners
  12. Hinge Bar / Travel Limter Seals
  13. Internal Fasteners

*Standard-No spring **Optional-Spring loaded valves

Valve SizeXXX=ABC

If your application requires different size and material configurations, please contact the factory for assistance with your special requirements.

Body Materials: Carbon Steel, 316 Stainless Steel

Internal Materials: Aluminum, 316 Stainless Steel, 316 Stainless Steel Spring Option

GENERAL DIMENSIONS (in inches): A = Outside Diameter, B = Face-to-Face, C = Clearance

Sealing Member Materials:

Buna-N60˚F to 225˚F
EPDM-40˚F to 300˚F
Silicone-100˚F to 500˚F
Viton-20˚F to 400˚F

Temperature ranges are for general guidance. Range may vary with application.

Standard Models & Materials

ModelBodyInternalsSealMax. Working Pressure (PSI)*
831-XXX-CSAL-BNCarbon SteelAluminumBuna-N150
831-XXX-CS6S-BNCarbon Steel316 Stainless SteelBuna-N150
831-XXX-6SAL-BN316 Stainless SteelAluminumBuna-N150
831-XXX-6S6S-BN316 Stainless Steel316 Stainless SteelBuna-N150

Note: Process Development & Control’s ElastoTITE Check Valves are designed to work without the assistance of a spring.
A spring option is available.
XXX = SIZE (to be for all sizes)
*Cold Working Pressure (CWP) from -20˚F to 100˚F for 1” thru 12” valve sizes can be up to 200 PSI.