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Armstrong 30B4 1in NPT 1/4in Orifice 30lb Cast Iron Float & Thermostatic, Same Side Inlet & Outlet D1175-8

Part # : 501-D1175-8
 
image description Availability: Will be backordered (Typically arrives in 14 days)
MSRP $375.00 $ 296.47

Product Description

Float and Thermostatic (F&T) Steam Traps

The More Your Steam Pressure Varies, The More You Need Armstrong F&T Traps

When steam pressure may vary from maximum steam supply pressure to vacuum, Armstrong F&Ts are your most energy-efficient choice. Our line of F&Ts brings Armstrong performance, dependability and long life to trapping services requiring continuous drainage with high air venting capacity. Thanks to separate orifices for condensate and air, they provide continuous condensate drainage and air venting-even under conditions of zero pressure.

All the benefits detailed here have been designed into Armstrong F&Ts through long experience in the manufacture of pressure float-type traps. They assure you of optimum operating efficiency for long periods with minimum trouble.

How they work
Float and thermostatic traps are mechanical units that operate on both density and temperature principles. The float valve operates on the density principle. A level connects the ball float to the valve and seat. Once condensate reaches a certain level in the trap, the float rises, opening the orifice and draining condensate. A water seal formed by the condensate prevents live steam loss.

Since the discharge valve is under water, it is not capable of venting air and non-condensables. When the accumulation of air and con-condensable gases causes a significant temperature drop, a thermostatic air vent in the top of the trap discharges them. The thermostatic vent opens at a temperature a few degrees below saturation, so it's able to handle a large volume of air-through an entirely separate orifice-but at a slightly reduced temperature.

Built as tough as the jobs they do
Armstrong float and thermostatic traps are unique in their super heavy duty construction. Armstrong uses high quality ASTM A48 Class 30 cast iron or ASTM A216 WCB cast steel-normally found in pressure vessels rated to 250 psi (17 bar) or 465 psi (32 bar). Internal mechanisms are made from stainless steel and are heavily reinforced. No brass cotter pins here. Valves and seats are stainless steel, hardened, ground and lapped to withstand the erosive forces of flashing condensate.

Why go to all this trouble for traps normally recommended for low-pressure, modulating service? The operative word here is modulating. Modulating pressures mean widely varying loads, thermal cycling and high air and non-condensable gas loads.

In other words: tough service. Inferior, lightweight construction in this kind of service is a mistake waiting to happen. Trap failures on modulating pressure may lead to water hammer, corrosion and even damage to heat exchangers.

Armstrong's published capacities are based on actual measurements of traps handling hot, flashing condensate. Competitive F&Ts may utilize theoretical calculated capacities. Armstrong uses its own steam lab to give you actual capacity-especially important on high-capacity traps such as those in our ultra-capacity line. Not only does Armstrong offer super heavy duty construction for long life and reliability, but we also supply the data to back up performance. Here's a simple, easy-to-remember summary: The more your pressure varies, the more you need Armstrong F&Ts.


Product Specifications

  • Main Category: Steam and Filter Products
  • Brand: Armstrong International
  • Brand: Armstrong
  • Size: 1in
  • Weight (lbs): 8.50
  • Material: Cast Iron
  • Steam Traps: Float and Thermostatic Traps (F&T)
  • Orifice Size: 1/4in
  • End Connection: Threaded
  • Maximum Operating Pressure (psi): 30psi
  • Series: B
  • Model: 30B4
  • Part Number: D1175-8
  • Alt. Size: 1"

Applications/Usage & Features

B Series Float and Thermostatic (F&T) Steam Traps

Cast Iron for Horizontal Installation with Thermostatic Air Vent

For pressures from vacuum to 30 psig (2 barg)
Capacities to 8,900 lb/hr (4,037 kg/hr)

Armstrong B and BI Series F&T traps combine high standards of performance and long life with economy. They are ideal for heating service where continuous drainage with high air-venting capacity is required.

Due to the wide use of vacuum returns in systems of this type, the thermostatic air vent element is charged to give it the capability of compensated response to the pressure-temperature curve of steam at any pressure from less than 20" (500 mm) Hg vacuum to 30 psig (2 bar) gauge. B and BI Series F&T traps will vent air slightly below steam temperature throughout this entire range of operation.

All B Series traps, except the 1/2" (15 mm) and 3/4" (20 mm), have inlet connections on both sides of the body to provide flexibility in piping. The BI Series F&T traps in sizes 1/2" (15 mm), 3/4" (20 mm) and 1" (25 mm) feature the convenience of in-line connections with the same internals as the B Series.

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