General Purpose Pressure Vessels
Parr Instrument Company
30
A707HC2 R/D HOLDER ASSY
A472E5 THERMOCOUPLE
56HC SERIES PRESSURE GAGE
1566HC2 ADAPTER, REDUCER
3X 1571HC EYE, LIFT
NOT SHOWN:
2X 1593HC LIFT RING
2959HC GASKET
420HC6 ADAPTER
1567HC2 DIP TUBE
265HC10 THERMOWELL
A279VBAD ANGLE VALVE
1566HC ADAPTER
A279VBAD ANGLE VALVE
275VBAD MALE CONNECTOR
2957HC11 HEAD
A2956HC SPLIT RING ASSY
2954HC COMPRESSION RING
48HC SERIES GASKET
2955HC CYLINDER, 10L
Note: For special material vessels add material code
for head, cylinder and/or internal fittings per page 12.
Series 4678-4679
Model Size Head Style
4678 10 L One opening, TBD
4679 10 L VGR, thermowell
Working Limits
Maximum Working Pressure
(T316SS) 1900 psi (131 bar)
Maximum Working Temperature
with PTFE 350 °C
Recommended Bolt Torque:
PTFE or Flexible Graphite
500 PSI 25 ft - lbs
1000 PSI 50 ft - lbs
1500 PSI 75 ft - lbs
1900 PSI 100 ft - lbs
Part No. Description Flat Gasket Seal
2957HC11
Head, VGR (two valves) & thermowell
2955HC Cylinder, 10 L
2955HC2 Cylinder, 10 L w/ ¾”NPT
A2956HC Split Ring
2956HCF
Compression bolt for above (10 req.)
A278VBAD Valve, straight, 3/8" NPTM, T316SS
A279VBAD Valve angle, 3/8" NPTM, T316SS
265HC10 Thermowell, 12.12”
48HC
Thermowell Gasket, silver
48HCCN Thermowell gasket, nickel
48HCFG
Thermowell Gasket, gold plated
1571HC Head Lift Rings
1593HC Cylinder Lift Rings
2959HC PTFE Gasket (7-3/4” ID)
2954HC Compression Ring
1566HC Valve Extension
A472E6 Thermocouple, 15-1/2”
56HCPD Pressure gauge, 4-1/2", 0-1000 psi
56HCPF Pressure gauge, 4-1/2", 0-2000 psi
56HCPG Pressure gauge, 4-1/2", 0-3000 psi
A707HC2
Rupture Disc Assembly
(See Manual 231M)
708HCP10CT Rupture disc, Inconel, 1000 psi
708HCP20CT Rupture disc, Inconel, 2000 psi
708HCP30CT Rupture disc, Inconel, 3000 psi
1567HC Dip Tube, 3/8” O.D.
275VBAD Connector, 3/8” NPT (M) x 3/8”T