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Medium Pressure Valve Features:
  • Largest-port valves available for medium pressure applications.
  • Tubing sizes available from 1/4” to 1”
  • Rising stem/barstock body design
  • Non-rotating stem prevents stem/seat galling
  • New one piece stem design permits ease of assembly and packing replacement
  • Metal-to-metal seating achieves bubble-tight shut-off, longer stem/seat life in abrasive flow, greater durability for repeated on/off cycles and excellent corrosion resistance.
  • PTFE (Teflon) encapsulated packing provides dependable stem and body sealing.
  • Stem sleeve and packing gland materials have been selected to achieve extended thread cycle life and reduced handle torque.
  • Choice of Vee or Regulating stem tip.
  • Available in five body patterns.
Autoclave valves are complemented by a complete line of fittings, tubing, check valves and line filters. The SM Series uses Autoclave’s Medium pressure connection. The coned-and-threaded connection features orifice sizes to match the high flow characteristics of this series.

Note: SM Series replaces 20SC Series.

10SM and 20SM Series valves are furnished complete with connection components, unless otherwise specified.

Panel mounting drill size: 0.22" all valves.
All dimensions for reference only and subject to change.
For prompt service, Autoclave stocks select products. Consult factory.
All general terms and conditions of sale, including limitations of our liability, apply to all products and services sold.
Unit of Measure

Pressure Rating at Room Temperature

 N/A 20000 psi1379 bar

Outside Diameter Tube

 N/A 3/4 in19.05 mm

Stem Type

 N/A VEE

Valve Pattern

 N/A 3-Way / 1 on Pressure

Connection Type

 N/A SF750CX20

Orifice Diameter

 N/A 0.438 in11.13 mm

A - Width

 N/A 3.00 in76.20 mm

B - Length

 N/A 1.50 in38.10 mm

C - Length

 N/A 0.62 in15.75 mm

D - Height

 N/A 2.25 in57.15 mm

D1 - Height

 N/A 2.25 in57.15 mm

E - Height

 N/A 4.25 in107.95 mm

F - Length

 N/A 10.25 in260.35 mm

G - Packing Gland Mounting Hole Drill Size

 N/A 1.12 in28.45 mm

G1 - Bracket Mounting Hole Size

 N/A 0.44 in11.18 mm

H - Height

 N/A 7.50 in190.50 mm

M - Length

 N/A 0.88 in22.35 mm

N - Height

 N/A 0.63 in16.00 mm

Block Thickness

 N/A 1.38 in35.05 mm

Tubing Engagement Depth

 N/A 1.00 in25.4 mm

Rated Cv

 N/A 2.50

N/A Extreme Temperatures
Standard Autoclave valves with Teflon packing may be operated from 0°F (-17.8°C) to 450°F (232°C). High temperature packing and/or extended stuffing box are available for service from -423°F (-252°C) to 1200°F (649°C) by adding the following suffixes to catalog order number.
TG standard valve with Teflon glass packing to 600°F (316°C).
GY standard valve with graphite braided yarn packing to 800°F (427°C).
Note: 3/4” rated 8000 psi (552 bar) and 1” rated 6000 psi (412 bar) maximum with graphite yarn packing.†
HT extended stuffing box valve with graphite braided yarn packing to 1200°F (649°C).
B standard valve with cryogenic trim materials and Teflon packing to -100°F (-73°C).
LT extended stuffing box valve with Teflon packing and cryogenic trim materials to -423°F (-252°C).

† This packing will affect the pressure rating. Refer to Technical Information section.

N/A Repair Kits:
add "R" to the front of valve catalog number for proper repair kit. (Example: R20SM4071)

Valve Bodies:
Valve bodies are available. Order using the eight (8) digit part number found on the valve drawing or contact your Sales Representative for information.

Consult your Autoclave representative for pricing on repair kits and valve bodies. Refer to the Tools, Installation, Operation and Maintenance section for proper maintenance procedures.

Note: Caution should be exercised in proper selection of medium pressure tubing based on actual operating conditions. Two tubing series available in some sizes: 15000 psi (1034 bar) and 20000 psi (1380 bar).