NOSHOK

Series 400 Hard Seat Valves

Steel or 316 SS, 1/4" NPT to 1-1/2" NPT, 10,000 PSI Pressure Rating

• Metal to metal hard seat design is 100% Helium leak tested to 1 x 10-4ml/s
• 10,000 psi pressure rating (@200°F maximum)
• Blow out proof stem that provides a secondary stem seal in the full open position
• Stem packing below the threads prevents thread galling & corrosion
• Viton O-Ring & Teflon back-up ring stem seals
• All 316SS stems (even in steel valves) for longer life
• Stem and bonnet threads are rolled for greater strength and smoother operation
• Angled stem for precise flow metering
• One piece bonnet with a metal to metal seal to the valve body below the bonnet threads
• Bonnet lock pin to prevent accidental loosening
• Optional panel mount bonnet and panel nuts
• Electroless Nickel plated finish on carbon steel valves
• Electropolish finish on stainless steel valves
• Vinyl bonnet & stem dust cap

SPECIFICATIONS

Models 402-404, 602-604 Hard Seat Technical Data (See Table 1)
Maximum Pressure Rating:
	Steel: 10,000 psi
	Stainless Steel: 10,000 psi
Standard O-Ring: Viton®
Standard Back-up Ring: Teflon®
Orifice size: 0.187"
Flow Coefficient: 0.44
Model 406-412 Hard Seat Technical Data (See Table 1)
Maximum Pressure Rating:
	Steel: 10,000 psi Flow
	Stainless Steel: 10,000 psi
Standard O-Ring: Viton®
Standard Back-up Ring: Teflon®
Orifice size: 0.438"
Flow Coefficient: 2.70

Table 1- Part Numbers

*SAE J1926-4 O-Ring Port

1	Bleed Screw
2	Valve Body
3	Viton O-Ring
4	Teflon Backup Rings
5	Bonnet Lock Pin
6	Valve Stem
7	Valve Bonnet
8	Dust Cap
9	Valve Handle
10	Set Screw

FLOW CHARACTERISTICS

TO ORDER:

ORDER NUMBER ABCD
EXAMPLE 1: 408 MFS
Example 2: 408 MFS-PM2-HL3

Kalrez® and Viton® are registered trademarks of DuPont Dow Elastomers.
Teflon® is a registered trademark of the DuPont Company.