Needle & Manifold Valves


Home | Needle Valves | 500 Series Standard, Soft Seat


500 Series Standard, Soft Seat Needle Valves


  • 100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance
    and reliability
  • 6,000 psi pressure rating @ 200 °F
  • Replaceable Delrin® seat and straight through porting for bidirectional, high capacity flow and easy roddable cleaning
  • Blow-out proof stem provides a secondary stem seal in the full open position
  • FKM o-ring seal and PTFE back-up ring below the stem threads to protect from corrosion and galling; PTFE packing optional (certain NPT sizes only)
  • All stems are 316 stainless steel
  • All stem threads are rolled for strength and ease of operation
  • One-piece bonnet with a metal-to-metal seal to the valve body below the
    bonnet threads
  • Slotted spring pin to prevent accidental loosening
  • Vinyl dust cap for bonnet and stem (non-packing)

Dimensions Options Print Catalog Page



SERIES 5 500 Series, soft seat            
CONNECTION SIZES 02 1/4" NPT 04 1/2" NPT 08 1" NPT 12 1-1/2" NPT
03 3/8" NPT 06 3/4" NPT 10 1-1/4" NPT 0402 1/2" NPT male - 1/4" NPT female
VALVE TYPES MFC Male-Female, Steel     MFS Male-Female, Stainless Steel
  FFC Female-Female, Steel     FFS Female-Female, Stainless Steel

    Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information.

To meet all of your specific application requirements, the following additional options are available for these needle valves. To order all or any of these options, simply add them to the part number as shown in the diagram below.

NOTE 1: The example shown includes ALL possible additional options. Please include ONLY the options required for your application when building your part number. (EXAMPLE: 504-FFC-HL5)
NOTE 2: When a packing option is selected, an o-ring option is NOT available.


STEM TIPS T1 Non-rotating (316 stainless)        
O-RINGS* EM1 EPDM KZ1 FFKM (Kalrez® 3018 or equivalent) NB1 NBR
PANEL MOUNTINGS PM1 Panel mount (1 nut) PM2 Panel mount (2 nuts)    
HANDLES HL4 1-3/8" Phenolic HL5 1-3/4" Phenolic HL9 2-3/8" Phenolic**

    Please consult your local NOSHOK Distributor or NOSHOK, Inc. for availability and delivery information.

†  For 1/4", 3/8" and 1/2" NPT only.
*  Other o-ring materials available on request.
** For 3/4" NPT to 1-1/2" NPT only.

Please note that the standard o-ring in all the NOSHOK valves is FKM and the standard handles are "T" handles (HL2).

The handle material will always match the material of the valve, unless otherwise specified. For example, the "T" handle (HL2) on the 504-FFC will be steel. When only the standard configuration is needed, no additional designations are necessary. Please consult the factory for special application requests.

NOSHOK, INC. 1010 W. Bagley Road | Berea, OH 44017 | Ph 440.243.0888 | Fax 440.243.3472 | Webmaster | Site Map