Quick, uniform distribution of heat to all radiation is essential to one pipe steam performance. This requires balancing the radiation by controlled venting. All steam air valves are designed for positive action and straight-line venting. They function automatically to vent the air.

TAV-14

1/8” M, Key Valve Assembly

(Ea. or 12 per box)

TAV-700P

1/8” M, Straight, Hydronic Float Vent, 50 psi max.

TAV-9P-Box

1/8” M, Coin Valve

(24 per 1 box)

TAV-10P-Box

1/8” M, Key Valve

(24 w/4 keys per 1 box)

TAV-10-4P-Box

Key for #10 and #14

(48 per 1 box)

Steam Vent Specifications ...
NO. USE FOR CONNECTION VENT PORT OVERALL HEIGHT MAC OPER. PRES.
11P Free Standing
Radiators		 1/8″ MALE 1/16″ 2-3/4″ 6 PSI
33P Convectors and
Risers		 1/4″ MALE 1/16″ 3-3/4″ 6 PSI
35P Main Vents 3/4″ MALE x
1/2″ FEMALE		 3/32″ 3-1/4″ 3 PSI
75P Main Vents 3/4″ MALE x
1/2″ FEMALE 		3/32″ 4-5/8″ 5 PSI

Hot Water Vent Specifications ...
NO. USE FOR CONNECTION MAC OPER. PRES.
9P Radiators 1/8″ MALE 150 PSI
10P Radiators 1/8″ MALE 150 PSI
700P As Required 1/8″ MALE 50 PSI
14 As Required 1/8″ MALE 150 PSI

Tunstall Replacement Guide ...

Tunstall # Dole # Connection Size and Description Steam (S) or
Hot Water (HW)
9P 9 1/8″ M Coin Valve HW
10P 10 1/8″ M Key Valve HW
10-4P 10-4 Key for #10 and #14 HW
11P 1933 1/8″ M Angle S
33P 1933 1/8″ M Straight S
35P 1933 3/4″ M x 1/2″ F Straight S
75P 2C 3/4″ x 1/2″ Vent for Mains S
700P 2000 1/8″ M Straight, Hydronic Float Vent HW
14A 14A 1/8″ M Coin Air Valve Assembly,
20″ x 3/16″ Tubing		 HW

TAV-33P

1/4” M, Straight

TAV-35P

3/4” M x 1/2” F Straight

TAV-75P

3/4” M x 1/2” F Straight

  • Tunstall steam air valves are made, assembled, tested and inspected in the U.S.

    Each unit is individually packaged with external labeling for inventory convenience and maintenance.

    Steam valves have brass internals with nickel plated and hand polished exterior.

  • Bulletin

    Tunstall Steam Products Catalog