Page 12 - Petroleum

Betts normal vent designed for use on DOT406 cargo tanks. The pressure setting of no less than 1 PSIG” per 178.346-10 (2) and a vacuum setting of 6oz. allow for efficient recovery of vapors during closed system loading and off-loading. Vent is flow tested and marked.
NOTE: This vent will not provide sufficient venting for product discharge.
A B
D
C
Betts PAF 406-98 Manhole Vent
Thru Area
Inbreathing 1.25 sq. in.
Outbreathing 0.44 sq. in.
Capacity
3350 cu. ft. hr. @ 1 PSIG
1200 cu. ft. hr. @ 3 PSIG
*NOTE: Unique design retains product at any attitude of rollover.
Material
Thread Size
Dimensions
Wt.
Symbol*
Part Number
Body
Disc
Trim
A
B
C
Aluminum
Viton
316 Stnls.
1 5/8 -12
7/8
47/16
23/4
1.2 Lbs.
PPV
BET 6496AL
*NOTE: Symbols are used ONLY in connection with COMPLETE MANHOLES ASSEMBLIES.
Civacon NV3000 Pressure Vacuum Vent
Civacon new pressure vacuum vent is designed with the durability to withstand extreme shock and vibrations experienced in the field. The result of light weight polymers used for the pressure and two unique horizontally positioned vacuum poppets. Vibration tests shows this design to last many times longer than current vents available today.
Features and Benefits
• Double dovetail grooves for poppet
• O-Rings for a more secure, longer lasting seal
• Higher flow rate than competitor’s vents
• Die-cast aluminum, stainless-steel and acetal components • Removable filter for easy, quick cleaning
Key
Part Number
Description
Req’d
1
CIV H71323
Body, Machined
1
2
CIV H71322
Top Enclosure
1
3
CIV H71321
Housing Shutoff
1
4
CIV 6461
Disk Shutoff
1
5
CIV H71325
Poppet Guide
1
6
CIV 6479
O-Ring
1
7
CIV H71327
Vacuum Poppet
2
8
CIV H71328
Vacuum Spring
2
9
CIV H71329
Retaining Clip
2
10
CIV H71335
O-Ring
1
11
CIV H71324
Flame Arrestor
1
12
CIV 11745
Wave Spring
1
13
CIV 11943
O-Ring
2
14
CIV H71326
Pressure Poppet
1
15
CIV H71330
Pressure Spring
1
16
CIV 9428
O-Ring
2
17
CIV H71401
Screw
4
18
CIV 11851
Lock Washer
4
2-12
Manhole Vents Petroleum Trailer Parts Catalog